{"id":116,"date":"2025-07-09T09:19:34","date_gmt":"2025-07-09T09:19:34","guid":{"rendered":"https:\/\/cardiocases.com\/?page_id=116"},"modified":"2025-11-09T14:21:56","modified_gmt":"2025-11-09T14:21:56","slug":"how-to-induce","status":"publish","type":"page","link":"https:\/\/cardiocases.com\/fr\/pacing-defibrillation\/basic-concepts\/icd\/how-to-induce\/","title":{"rendered":"How to induce"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"116\" class=\"elementor elementor-116\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e1dd11f e-con-full e-flex e-con e-parent\" data-id=\"e1dd11f\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8e5ac0a elementor-widget elementor-widget-heading\" data-id=\"8e5ac0a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How to induce?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-10a0187 elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"10a0187\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;headings_by_tags&quot;:[&quot;h3&quot;,&quot;h4&quot;,&quot;h5&quot;],&quot;exclude_headings_by_selector&quot;:[],&quot;no_headings_message&quot;:&quot;No headings were found on this page.&quot;,&quot;marker_view&quot;:&quot;bullets&quot;,&quot;icon&quot;:{&quot;value&quot;:&quot;fas fa-circle&quot;,&quot;library&quot;:&quot;fa-solid&quot;,&quot;rendered_tag&quot;:&quot;&lt;svg class=\\&quot;e-font-icon-svg e-fas-circle\\&quot; viewBox=\\&quot;0 0 512 512\\&quot; xmlns=\\&quot;http:\\\/\\\/www.w3.org\\\/2000\\\/svg\\&quot;&gt;&lt;path d=\\&quot;M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8z\\&quot;&gt;&lt;\\\/path&gt;&lt;\\\/svg&gt;&quot;},&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<h4 class=\"elementor-toc__header-title\">\n\t\t\t\tContent\t\t\t<\/h4>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__10a0187\" aria-expanded=\"true\" aria-label=\"Ouvrir la table des mati\u00e8res\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__10a0187\" aria-expanded=\"true\" aria-label=\"Fermer la table des mati\u00e8res\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__10a0187\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<svg class=\"elementor-toc__spinner eicon-animation-spin e-font-icon-svg e-eicon-loading\" aria-hidden=\"true\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M500 975V858C696 858 858 696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2901943 elementor-widget elementor-widget-heading\" data-id=\"2901943\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">General information<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d6f65fd elementor-widget elementor-widget-text-editor\" data-id=\"d6f65fd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-size: 1rem;\">The induction of VF at the end of the procedure allows to test the proper function of the implanted system and to:<\/span><\/p><ul style=\"color: #000000; font-size: 16px;\"><li><p>verify the integrity of the high voltage system<\/p><\/li><li><p>verify the proper sensing and re-sensing of the intracardiac electrograms during ventricular fibrillation<\/p><\/li><li><p>verify that the defibrillation safety margin is wide enough<\/p><\/li><\/ul><p style=\"color: #000000;\">Despite some risk involved, this test used to be performed systematically with older devices, which were implanted for secondary prevention indications, in patients at high risk of recurrent sudden cardiac death. Shocks were the only therapy available and defibrillation failures were relatively frequent. Failure to defibrillate, nowadays, is rare, a majority of patients undergo device implants for primary prevention, and a large proportion of rapid VT can be terminated by ATP. Furthermore, the maximum strength of the shocks delivered by the latest implantable defibrillators is higher and associated with a wider safety margin.<\/p><p>This has prompted many implanting centres to reconsider the need for a systematic test at the end of the procedure and, instead, to proceed on a case-by-case basis.\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ab334ce elementor-widget elementor-widget-text-editor\" data-id=\"ab334ce\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h6>Induction of ventricular fibrillation<\/h6><p>Several means of VF induction are available in clinical practice:<\/p><ol><li style=\"font-size: 16px;\"><em>T wave shock delivery<\/em>: a low energy shock is delivered during the ventricular vulnerable period to induce a ventricular arrhythmia (most often VF). A ventricular stimulation sequence, at a fixed rate is followed by the delivery across the electrodes, of a low-energy electrical shock during the ventricular vulnerable period. The delivery of the shock requires the prior charge of the capacitors.\u00a0<\/li><li style=\"font-size: 16px;\"><em>Delivery of alternating current<\/em>: a salvo of rapid pacing (alternating current) is delivered to induce an arrhythmia (VT or VF). Several rates are available according to the manufacturers: 33 HZ \u00e0 30 ms between pulses; 50 HZ \u00e0 20 ms; 20 HZ \u00e0 50 ms.\u00a0<\/li><li style=\"font-size: 16px;\"><em>Delivery of high rate, high output pulses<\/em>: pulses are delivered through the shocking electrode with 2 different cycle lengths to induce a ventricular arrhythmia (most often VF).\u00a0<\/li><li style=\"font-size: 16px;\">The success rate, i.e. the ratio VF induction \/ attempt, seems higher with the delivery of direct or alternating current (may minimize the number of needed attempts) than with the delivery of shocks on the T wave. Furthermore, the simplicity of programming is higher with continuous or alternating current since only one programmable parameter is needed. If the procedure is performed under local anaesthesia, the painless alternating current is preferred to the other induction methods.<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1768fab elementor-widget elementor-widget-text-editor\" data-id=\"1768fab\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h6 style=\"color: #000000;\">Delivery of the electrical shock<\/h6><p style=\"color: #000000;\">During the induction procedure, the electrical shock can be delivered by 3 different methods:<\/p><ol style=\"color: #000000; font-size: 16px;\"><li>Automatic: the device delivers the therapy after confirmation of the episode in the VF zone.\u00a0<\/li><li>Delayed: the device delivers the therapy after confirmation of the episode in the VF zone and after a programmable\u00a0delay.\u00a0<\/li><li>Manual: the device charges the capacitors and the operator chooses when to deliver the therapy. If the procedure is performed under local anaesthesia, VF is triggered by alternating current and the shock is delivered manually after the patient has lost consciousness.<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-eb551c7 elementor-widget elementor-widget-text-editor\" data-id=\"eb551c7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h6 style=\"color: #000000;\">Defibrillation testing in clinical practice<\/h6><p style=\"color: #000000;\">A number of different protocols can be used. Many of these do not aim to measure the actual defibrillation threshold; rather they set out to determine that a device is likely to provide an adequate safety margin. Indeed, determination of a complete curve probability of success\/energy delivered would require many more episodes of fibrillation\/defibrillation than practically and safely acceptable. In clinical practice, different protocols can be performed:<\/p><ol style=\"color: #000000; font-size: 16px;\"><li><em>Step-down to failure testing<\/em>: the first shock energy is usually programmed at 10 Joules less than the maximum output of the device. Progressively lower energies are then used at successive inductions (for example steps of 5J lower energies for each successive test) until there is failure of defibrillation. The defibrillation threshold is taken as the lowest successful energy. This type of testing is infrequently used clinically because of the excessively high number of shocks it requires. Moreover, the word threshold is not adequate for defibrillation because of the probabilistic nature of defibrillation. This method may lead to programming the first shock to a value less than the maximal output.\u00a0<\/li><li><em>Test of a single shock strength twice<\/em>: a first shock is usually delivered at 10 J below the maximum capacity of the device. To verify the effectiveness of the shock, the same amplitude is then tested a second time. If the 2 shocks reduce the arrhythmia, it suggests an appropriate safety margin. This method may lead to programming of the first shock at the maximal capacity of the device.\u00a0<\/li><li><em>Test of a single shock strength on<\/em>ce: a single shock (for example 14 Joules: at least 15 Joules below the maximum output of the device) is tested. Similarly, if this shock is successful, it suggests an appropriate safety margin.<\/li><\/ol><p style=\"color: #000000;\">At least 3 -5 minutes are allowed between every VF induction to permit hemodynamic recovery and to minimize the cumulative effect of shocks.\u00a0<span style=\"font-size: 1rem;\">If the shock delivered by the implantable defibrillator is ineffective, \u22651 rescue shock(s) can be delivered by an external device or by the implanted system, at the highest programmable energy. The internal shock does not carry the risk of thermal injury to the skin, though has the disadvantage of being delayed by the re-detection of VF (unless using the commanded shock mode) and by the new charge time needed to reach the maximum energy.\u00a0<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0baf775 elementor-widget elementor-widget-heading\" data-id=\"0baf775\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Company specific information<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4549885 elementor-widget elementor-widget-heading\" data-id=\"4549885\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Abbott<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e08bc51 elementor-widget elementor-widget-text-editor\" data-id=\"e08bc51\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>There are three methods available for inducing VF: T-wave shock, rapid pacing, and DC Fibber<sup>TM<\/sup><\/p><p><strong>1. DC Fibber<sup>TM<\/sup><\/strong><\/p><p>The capacitors are charged, then 12 volts are delivered continuously between the coil and the housing for a programmable duration (generally, one to two seconds of application is sufficient to trigger VF).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-875a5a4 elementor-widget elementor-widget-image\" data-id=\"875a5a4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"http:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_st_jude1.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"icd_in_20_cs_st_jude1\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MzQxNiwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTBcL2ljZF9pbl8yMF9jc19zdF9qdWRlMS5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"789\" height=\"642\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_st_jude1.png\" class=\"attachment-large size-large wp-image-3416\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_st_jude1.png 789w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_st_jude1-300x244.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_st_jude1-768x625.png 768w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_st_jude1-15x12.png 15w\" sizes=\"(max-width: 789px) 100vw, 789px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1ccc1fa elementor-widget elementor-widget-text-editor\" data-id=\"1ccc1fa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>2. Shock on the T-wave<\/strong><\/p><p>The capacitors are charged, then 12 volts are delivered continuously between the coil and the housing for a programmable duration (generally, one to two seconds of application is sufficient to trigger VF).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8e8daaf elementor-widget elementor-widget-image\" data-id=\"8e8daaf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"http:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction7.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"dai_20_cas_induction7\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MzQxMSwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTBcL2RhaV8yMF9jYXNfaW5kdWN0aW9uNy5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"794\" height=\"634\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction7.png\" class=\"attachment-large size-large wp-image-3411\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction7.png 794w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction7-300x240.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction7-768x613.png 768w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction7-15x12.png 15w\" sizes=\"(max-width: 794px) 100vw, 794px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f0fad19 elementor-widget elementor-widget-text-editor\" data-id=\"f0fad19\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>3. High frequency burst<\/strong><\/p><p>The high-frequency burst (right ventricular pacing, VOO mode, nominal value 33 Hz) can be delivered for an extended period by pressing the \u201cApply Burst\u201d button. Programmable amplitude: nominal value 7.5 volts, pulse duration 1.5 ms.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-57cb22f elementor-widget elementor-widget-image\" data-id=\"57cb22f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"http:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction8.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"dai_20_cas_induction8\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MzQxMiwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTBcL2RhaV8yMF9jYXNfaW5kdWN0aW9uOC5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"794\" height=\"632\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction8.png\" class=\"attachment-large size-large wp-image-3412\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction8.png 794w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction8-300x239.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction8-768x611.png 768w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction8-15x12.png 15w\" sizes=\"(max-width: 794px) 100vw, 794px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2622321 elementor-widget elementor-widget-heading\" data-id=\"2622321\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Biotronik<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1122e44 elementor-widget elementor-widget-text-editor\" data-id=\"1122e44\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>There are two methods available for inducing VF: T wave shock and rapid pacing.<\/p><p><strong>1. T-wave shock<\/strong><\/p><p>S1 number (number of stimuli in the burst preceding the shock): nominal value 8; R-S1 interval (interval between stimuli): nominal value 400 ms; coupling interval (interval between the last stimulus and the electric shock): nominal value 290 ms;<\/p><p>energy (amplitude of the shock delivered at the peak of the T wave): nominal value 1 joule;<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b401152 elementor-widget elementor-widget-image\" data-id=\"b401152\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"http:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction1.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"dai_20_cas_induction1\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MzQwNSwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTBcL2RhaV8yMF9jYXNfaW5kdWN0aW9uMS5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"797\" height=\"633\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction1.png\" class=\"attachment-large size-large wp-image-3405\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction1.png 797w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction1-300x238.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction1-768x610.png 768w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction1-15x12.png 15w\" sizes=\"(max-width: 797px) 100vw, 797px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f400c99 elementor-widget elementor-widget-text-editor\" data-id=\"f400c99\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>2. High frequency burst<\/strong><\/p><p>Stimulation duration: 1, 2, 3, or 4 seconds (nominal value 4 seconds); the high-frequency burst can be delivered for an extended duration by pressing the Start button; stimulation frequency: 10, 20, or 40 Hz (nominal value 40 Hz).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ddb2bc9 elementor-widget elementor-widget-image\" data-id=\"ddb2bc9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"http:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction2.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"dai_20_cas_induction2\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MzQwNiwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTBcL2RhaV8yMF9jYXNfaW5kdWN0aW9uMi5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"796\" height=\"634\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction2.png\" class=\"attachment-large size-large wp-image-3406\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction2.png 796w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction2-300x239.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction2-768x612.png 768w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction2-15x12.png 15w\" sizes=\"(max-width: 796px) 100vw, 796px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e5d3b86 elementor-widget elementor-widget-heading\" data-id=\"e5d3b86\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Boston Scientific<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-82f3a48 elementor-widget elementor-widget-text-editor\" data-id=\"82f3a48\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>There are three methods available for inducing VF: T-wave shock, rapid pacing, and VFib induction.<\/p><p><strong>1. Shock on the T-wave<\/strong><\/p><p>S1 number: nominal value 8; S1 interval: nominal value 400 ms; shock coupling: nominal value 310 ms; shock amplitude: nominal value 1.1 joules;<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9d574a4 elementor-widget elementor-widget-image\" data-id=\"9d574a4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"http:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction3.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"dai_20_cas_induction3\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MzQwNywidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTBcL2RhaV8yMF9jYXNfaW5kdWN0aW9uMy5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"771\" height=\"392\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction3.png\" class=\"attachment-large size-large wp-image-3407\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction3.png 771w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction3-300x153.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction3-768x390.png 768w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction3-18x9.png 18w\" sizes=\"(max-width: 771px) 100vw, 771px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5f892f0 elementor-widget elementor-widget-text-editor\" data-id=\"5f892f0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>2. High frequency burst<\/strong><\/p><p>A manual burst of high-frequency stimulation (20 ms\/50 Hz) is delivered as long as the operator presses the \u201chold for 50 Hz burst\u201d button (maximum duration of 30 seconds).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2c04e68 elementor-widget elementor-widget-image\" data-id=\"2c04e68\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"http:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction4.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"dai_20_cas_induction4\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MzQwOCwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTBcL2RhaV8yMF9jYXNfaW5kdWN0aW9uNC5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"797\" height=\"572\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction4.png\" class=\"attachment-large size-large wp-image-3408\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction4.png 797w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction4-300x215.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction4-768x551.png 768w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction4-18x12.png 18w\" sizes=\"(max-width: 797px) 100vw, 797px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fce676f elementor-widget elementor-widget-text-editor\" data-id=\"fce676f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>3. VF induction<\/strong><\/p><p>The principle is to induce arrhythmia (most often VF) by stimulating the right ventricle through the shock electrode at a very high frequency and high amplitude. It is possible to program variable power: Low Fib V delivers a 9-volt stimulation waveform (pulse duration 1.1 ms, 50 ms interval between stimuli (20 Hz)); High VF delivers a 15-volt stimulation waveform (pulse duration 1.1 ms, interval of 50 ms between stimuli (20 Hz)). The induction train is delivered as long as the operator presses the button and the telemetric link is maintained (cannot exceed 15 seconds). This type of induction is associated with significant and often painful mobilization of the surrounding muscle masses, requiring sedation or general anesthesia.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-206b888 elementor-widget elementor-widget-image\" data-id=\"206b888\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"http:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_boston_3.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"icd_in_20_cs_boston_3\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MzQxMywidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTBcL2ljZF9pbl8yMF9jc19ib3N0b25fMy5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"793\" height=\"192\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_boston_3.png\" class=\"attachment-large size-large wp-image-3413\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_boston_3.png 793w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_boston_3-300x73.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_boston_3-768x186.png 768w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_boston_3-18x4.png 18w\" sizes=\"(max-width: 793px) 100vw, 793px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6a76426 elementor-widget elementor-widget-heading\" data-id=\"6a76426\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Medtronic<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bbfdec3 elementor-widget elementor-widget-text-editor\" data-id=\"bbfdec3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>There are two methods available for inducing VF: T-wave shock and rapid pacing.<\/p><p><strong>1. Shock on the T-wave<\/strong><\/p><p>S1 number (number of stimuli in the burst preceding the shock): nominal value 5;\u00a0<span style=\"font-size: 1rem;\">S1-S1 interval (interval between stimuli): nominal value 400 ms;\u00a0<\/span><span style=\"font-size: 1rem;\">coupling interval (interval between the last stimulus and the electric shock): nominal value 300 ms;<\/span><\/p><p>energy (amplitude of the shock delivered at the peak of the T wave): nominal value 1 joule;\u00a0<span style=\"font-size: 1rem;\">waveform: nominal value monophasic;\u00a0<\/span><span style=\"font-size: 1rem;\">vector: nominal value B&gt;AX (RV lead&gt;chest, LV lead).<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-afdc8d4 elementor-widget elementor-widget-image\" data-id=\"afdc8d4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"http:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction5.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"dai_20_cas_induction5\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MzQwOSwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTBcL2RhaV8yMF9jYXNfaW5kdWN0aW9uNS5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"776\" height=\"294\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction5.png\" class=\"attachment-large size-large wp-image-3409\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction5.png 776w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction5-300x114.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction5-768x291.png 768w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction5-18x7.png 18w\" sizes=\"(max-width: 776px) 100vw, 776px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-85a2b72 elementor-widget elementor-widget-text-editor\" data-id=\"85a2b72\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>2. High frequency burst<\/strong><\/p><p>High-frequency burst (right ventricular pacing, VOO mode, 50 Hz) can be delivered for an extended period by pressing the 50 Hz Burst button (maximum 10 seconds). Programmable amplitude: nominal value 4 volts, pulse duration 0.5 ms.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d2cc7bf elementor-widget elementor-widget-image\" data-id=\"d2cc7bf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"http:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction6.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"dai_20_cas_induction6\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MzQxMCwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTBcL2RhaV8yMF9jYXNfaW5kdWN0aW9uNi5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"794\" height=\"295\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction6.png\" class=\"attachment-large size-large wp-image-3410\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction6.png 794w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction6-300x111.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction6-768x285.png 768w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/dai_20_cas_induction6-18x7.png 18w\" sizes=\"(max-width: 794px) 100vw, 794px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ab1dc5c elementor-widget elementor-widget-heading\" data-id=\"ab1dc5c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Microport<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-56de7e6 elementor-widget elementor-widget-text-editor\" data-id=\"56de7e6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>There are two methods available for inducing VF: T-wave shock and rapid pacing.<\/p><p><strong>1. Shock on the T-wave<\/strong><\/p><p>Number S1 (number of stimuli in the burst preceding the shock): nominal value 6; interval S1-S1 (interval between the different stimuli): nominal value 410 ms; coupling interval (interval between the last stimulus and the electric shock): nominal value 310 ms;<\/p><p>energy (amplitude of the shock delivered at the peak of the T wave): nominal value 0.8 joules;<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9768fa7 elementor-widget elementor-widget-image\" data-id=\"9768fa7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"http:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_sorin_1.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"icd_in_20_cs_sorin_1\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MzQxNCwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTBcL2ljZF9pbl8yMF9jc19zb3Jpbl8xLnBuZyJ9\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"571\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_sorin_1.png\" class=\"attachment-large size-large wp-image-3414\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_sorin_1.png 843w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_sorin_1-300x214.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_sorin_1-768x548.png 768w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_sorin_1-18x12.png 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-50bc772 elementor-widget elementor-widget-text-editor\" data-id=\"50bc772\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>2. High frequency burst<\/strong><\/p><p>High-frequency burst (right ventricular pacing, VOO mode, nominal value 30 Hz) can be delivered for a programmable duration. Pacing amplitude 7.5 volts, pulse duration 1 ms.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6036618 elementor-widget elementor-widget-image\" data-id=\"6036618\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"http:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_sorin4.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"icd_in_20_cs_sorin4\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MzQxNSwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTBcL2ljZF9pbl8yMF9jc19zb3JpbjQucG5nIn0%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"789\" height=\"595\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_sorin4.png\" class=\"attachment-large size-large wp-image-3415\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_sorin4.png 789w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_sorin4-300x226.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_sorin4-768x579.png 768w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_sorin4-16x12.png 16w\" sizes=\"(max-width: 789px) 100vw, 789px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>How to induce? Content General information The induction of VF at the end of the procedure allows to test the proper function of the implanted system and to: verify the integrity of the high voltage system verify the proper sensing and re-sensing of the intracardiac electrograms during ventricular fibrillation verify that the defibrillation safety margin [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":19,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-116","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Induce VF for ICD DFT Testing | Cardiocases<\/title>\n<meta name=\"description\" content=\"VF induction techniques for ICD DFT testing \u2014 T-wave shock, AC fibrillation, 50Hz protocols &amp; safety.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cardiocases.com\/fr\/pacing-defibrillation\/basic-concepts\/icd\/how-to-induce\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Induce VF for ICD DFT Testing | Cardiocases\" \/>\n<meta property=\"og:description\" content=\"VF induction techniques for ICD DFT testing \u2014 T-wave shock, AC fibrillation, 50Hz protocols &amp; safety.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cardiocases.com\/fr\/pacing-defibrillation\/basic-concepts\/icd\/how-to-induce\/\" \/>\n<meta property=\"og:site_name\" content=\"Cardiocases\" \/>\n<meta property=\"article:modified_time\" content=\"2025-11-09T14:21:56+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_st_jude1.png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"7 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/cardiocases.com\\\/pacing-defibrillation\\\/basic-concepts\\\/icd\\\/how-to-induce\\\/\",\"url\":\"https:\\\/\\\/cardiocases.com\\\/pacing-defibrillation\\\/basic-concepts\\\/icd\\\/how-to-induce\\\/\",\"name\":\"How to Induce VF for ICD DFT Testing | Cardiocases\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/cardiocases.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/cardiocases.com\\\/pacing-defibrillation\\\/basic-concepts\\\/icd\\\/how-to-induce\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/cardiocases.com\\\/pacing-defibrillation\\\/basic-concepts\\\/icd\\\/how-to-induce\\\/#primaryimage\"},\"thumbnailUrl\":\"http:\\\/\\\/cardiocases.com\\\/wp-content\\\/uploads\\\/2025\\\/10\\\/icd_in_20_cs_st_jude1.png\",\"datePublished\":\"2025-07-09T09:19:34+00:00\",\"dateModified\":\"2025-11-09T14:21:56+00:00\",\"description\":\"VF induction techniques for ICD DFT testing \u2014 T-wave shock, AC fibrillation, 50Hz protocols & safety.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/cardiocases.com\\\/pacing-defibrillation\\\/basic-concepts\\\/icd\\\/how-to-induce\\\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/cardiocases.com\\\/pacing-defibrillation\\\/basic-concepts\\\/icd\\\/how-to-induce\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/cardiocases.com\\\/pacing-defibrillation\\\/basic-concepts\\\/icd\\\/how-to-induce\\\/#primaryimage\",\"url\":\"http:\\\/\\\/cardiocases.com\\\/wp-content\\\/uploads\\\/2025\\\/10\\\/icd_in_20_cs_st_jude1.png\",\"contentUrl\":\"http:\\\/\\\/cardiocases.com\\\/wp-content\\\/uploads\\\/2025\\\/10\\\/icd_in_20_cs_st_jude1.png\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/cardiocases.com\\\/pacing-defibrillation\\\/basic-concepts\\\/icd\\\/how-to-induce\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/cardiocases.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Pacing &amp; Defibrillation\",\"item\":\"https:\\\/\\\/cardiocases.com\\\/pacing-defibrillation\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Basic concepts\",\"item\":\"https:\\\/\\\/cardiocases.com\\\/pacing-defibrillation\\\/basic-concepts\\\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"ICD\",\"item\":\"https:\\\/\\\/cardiocases.com\\\/pacing-defibrillation\\\/basic-concepts\\\/icd\\\/\"},{\"@type\":\"ListItem\",\"position\":5,\"name\":\"How to induce\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/cardiocases.com\\\/#website\",\"url\":\"https:\\\/\\\/cardiocases.com\\\/\",\"name\":\"Cardiocases\",\"description\":\"Real cardiac device traces, pacemaker &amp; ICD learning \u2014 built by electrophysiologists\",\"publisher\":{\"@id\":\"https:\\\/\\\/cardiocases.com\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/cardiocases.com\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/cardiocases.com\\\/#organization\",\"name\":\"Cardiocases\",\"url\":\"https:\\\/\\\/cardiocases.com\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/cardiocases.com\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/cardiocases.com\\\/wp-content\\\/uploads\\\/2025\\\/07\\\/cardiocases_logo.png\",\"contentUrl\":\"https:\\\/\\\/cardiocases.com\\\/wp-content\\\/uploads\\\/2025\\\/07\\\/cardiocases_logo.png\",\"width\":1755,\"height\":499,\"caption\":\"Cardiocases\"},\"image\":{\"@id\":\"https:\\\/\\\/cardiocases.com\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.linkedin.com\\\/company\\\/cardiocases\\\/\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"How to Induce VF for ICD DFT Testing | Cardiocases","description":"VF induction techniques for ICD DFT testing \u2014 T-wave shock, AC fibrillation, 50Hz protocols & safety.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/cardiocases.com\/fr\/pacing-defibrillation\/basic-concepts\/icd\/how-to-induce\/","og_locale":"fr_FR","og_type":"article","og_title":"How to Induce VF for ICD DFT Testing | Cardiocases","og_description":"VF induction techniques for ICD DFT testing \u2014 T-wave shock, AC fibrillation, 50Hz protocols & safety.","og_url":"https:\/\/cardiocases.com\/fr\/pacing-defibrillation\/basic-concepts\/icd\/how-to-induce\/","og_site_name":"Cardiocases","article_modified_time":"2025-11-09T14:21:56+00:00","og_image":[{"url":"http:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_st_jude1.png","type":"","width":"","height":""}],"twitter_card":"summary_large_image","twitter_misc":{"Dur\u00e9e de lecture estim\u00e9e":"7 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/cardiocases.com\/pacing-defibrillation\/basic-concepts\/icd\/how-to-induce\/","url":"https:\/\/cardiocases.com\/pacing-defibrillation\/basic-concepts\/icd\/how-to-induce\/","name":"How to Induce VF for ICD DFT Testing | Cardiocases","isPartOf":{"@id":"https:\/\/cardiocases.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/cardiocases.com\/pacing-defibrillation\/basic-concepts\/icd\/how-to-induce\/#primaryimage"},"image":{"@id":"https:\/\/cardiocases.com\/pacing-defibrillation\/basic-concepts\/icd\/how-to-induce\/#primaryimage"},"thumbnailUrl":"http:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_st_jude1.png","datePublished":"2025-07-09T09:19:34+00:00","dateModified":"2025-11-09T14:21:56+00:00","description":"VF induction techniques for ICD DFT testing \u2014 T-wave shock, AC fibrillation, 50Hz protocols & safety.","breadcrumb":{"@id":"https:\/\/cardiocases.com\/pacing-defibrillation\/basic-concepts\/icd\/how-to-induce\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/cardiocases.com\/pacing-defibrillation\/basic-concepts\/icd\/how-to-induce\/"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/cardiocases.com\/pacing-defibrillation\/basic-concepts\/icd\/how-to-induce\/#primaryimage","url":"http:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_st_jude1.png","contentUrl":"http:\/\/cardiocases.com\/wp-content\/uploads\/2025\/10\/icd_in_20_cs_st_jude1.png"},{"@type":"BreadcrumbList","@id":"https:\/\/cardiocases.com\/pacing-defibrillation\/basic-concepts\/icd\/how-to-induce\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/cardiocases.com\/"},{"@type":"ListItem","position":2,"name":"Pacing &amp; Defibrillation","item":"https:\/\/cardiocases.com\/pacing-defibrillation\/"},{"@type":"ListItem","position":3,"name":"Basic concepts","item":"https:\/\/cardiocases.com\/pacing-defibrillation\/basic-concepts\/"},{"@type":"ListItem","position":4,"name":"ICD","item":"https:\/\/cardiocases.com\/pacing-defibrillation\/basic-concepts\/icd\/"},{"@type":"ListItem","position":5,"name":"How to induce"}]},{"@type":"WebSite","@id":"https:\/\/cardiocases.com\/#website","url":"https:\/\/cardiocases.com\/","name":"Cardiocases","description":"Real cardiac device traces, pacemaker &amp; ICD learning \u2014 built by electrophysiologists","publisher":{"@id":"https:\/\/cardiocases.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/cardiocases.com\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Organization","@id":"https:\/\/cardiocases.com\/#organization","name":"Cardiocases","url":"https:\/\/cardiocases.com\/","logo":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/cardiocases.com\/#\/schema\/logo\/image\/","url":"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/07\/cardiocases_logo.png","contentUrl":"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/07\/cardiocases_logo.png","width":1755,"height":499,"caption":"Cardiocases"},"image":{"@id":"https:\/\/cardiocases.com\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.linkedin.com\/company\/cardiocases\/"]}]}},"_links":{"self":[{"href":"https:\/\/cardiocases.com\/fr\/wp-json\/wp\/v2\/pages\/116","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cardiocases.com\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/cardiocases.com\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/cardiocases.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cardiocases.com\/fr\/wp-json\/wp\/v2\/comments?post=116"}],"version-history":[{"count":0,"href":"https:\/\/cardiocases.com\/fr\/wp-json\/wp\/v2\/pages\/116\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/cardiocases.com\/fr\/wp-json\/wp\/v2\/pages\/19"}],"wp:attachment":[{"href":"https:\/\/cardiocases.com\/fr\/wp-json\/wp\/v2\/media?parent=116"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}