{"id":3584,"date":"2025-10-08T18:41:14","date_gmt":"2025-10-08T18:41:14","guid":{"rendered":"https:\/\/cardiocases.com\/?page_id=3584"},"modified":"2026-07-08T10:15:01","modified_gmt":"2026-07-08T10:15:01","slug":"atrial-arrhythmia-management-microport","status":"publish","type":"page","link":"https:\/\/cardiocases.com\/fr\/pacing-defibrillation\/devices-per-company\/microport-crm\/atrial-arrhythmia-management-microport\/","title":{"rendered":"Gestion des arythmies atriales"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"3584\" class=\"elementor elementor-3584\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fb22c24 e-con-full e-flex e-con e-parent\" data-id=\"fb22c24\" 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-a547cfb elementor-widget elementor-widget-heading\" data-id=\"a547cfb\" 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\"><span style=\"font-size: 2rem\">Microport - <\/span>Atrial arrhythmia management<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-73e1385 elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"73e1385\" 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__73e1385\" 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__73e1385\" 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__73e1385\" 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-7301f54 elementor-widget elementor-widget-heading\" data-id=\"7301f54\" 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\">Mode-switch algorithm<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ca876cc elementor-widget elementor-widget-text-editor\" data-id=\"ca876cc\" 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>Principle of the mode-switch algorithm<\/strong><\/p><p>Arrhythmia identification is based on:<\/p><ul><li>an atrial rate above which the pacemaker automatically switches to DDI mode (fallback only occurs if the atrial rate exceeds 120 min-1; this parameter cannot be modified)<\/li><li>detection of a sudden acceleration in atrial rhythm based on a dynamic prematurity window = Atrial Rhythm Acceleration Detection (WARAD)<\/li><li>confirmation based on statistical processing of atrial arrhythmia in the event of atrial under-detection<\/li><\/ul><p>\u00a0<\/p><p><strong>WARAD<\/strong><\/p><p>WARAD is triggered on each stimulated or detected normal atrial event. Its duration, calculated dynamically, depends on the sinus rate.<\/p><p>When the sinus rhythm is less than 80 min-1, WARAD represents 62.5% of the previous P-P interval<\/p><p>When the sinus rhythm is greater than (or equal to) 80 min-1, WARAD represents 75% of the previous P-P interval<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-de8ba01 elementor-widget elementor-widget-image\" data-id=\"de8ba01\" 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\/11\/pm_19_situations_arythmies_a17.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"pm_19_situations_arythmies_a17\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NDk1NCwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTFcL3BtXzE5X3NpdHVhdGlvbnNfYXJ5dGhtaWVzX2ExNy5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"501\" height=\"301\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a17.png\" class=\"attachment-large size-large wp-image-4954\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a17.png 501w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a17-300x180.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a17-18x12.png 18w\" sizes=\"(max-width: 501px) 100vw, 501px\" \/>\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-3e8d5c7 elementor-widget elementor-widget-text-editor\" data-id=\"3e8d5c7\" 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>Phase of suspected atrial arrhythmia (N:1)<\/strong><\/p><p>At the onset of rapid atrial rhythm, a short AV delay may be triggered on certain P wave detections in WARAD if and only if the R-V or V-V interval that would be applied is greater than 500 ms. This prevents overly rapid ventricular pacing at the start of the episode before switching to asynchronous mode. During this phase of suspected atrial rhythm disturbance, all detected atrial events are marked with refractory period markers (small \u201cp\u201ds). The WARAD value is then fixed at the WARAD value that detected the very first PAC and cannot exceed 500 ms. The short AV delay that can be triggered after certain P wave detections in WARAD is 30 ms (non-programmable).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cb6df30 elementor-widget elementor-widget-image\" data-id=\"cb6df30\" 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\/11\/pm_19_situations_arythmies_a18.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"pm_19_situations_arythmies_a18\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NDk1NSwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTFcL3BtXzE5X3NpdHVhdGlvbnNfYXJ5dGhtaWVzX2ExOC5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"723\" height=\"633\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a18.png\" class=\"attachment-large size-large wp-image-4955\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a18.png 723w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a18-300x263.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a18-14x12.png 14w\" sizes=\"(max-width: 723px) 100vw, 723px\" \/>\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-9bce167 elementor-widget elementor-widget-text-editor\" data-id=\"9bce167\" 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>Ventricular cycles with at least one atrial detection in the WARAD are considered \u201csuspicious.\u201d<\/p><p>\u00a0<\/p><p>\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-41a6b4d elementor-widget elementor-widget-heading\" data-id=\"41a6b4d\" 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\">How the mode-switch algorithm works<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9c1e6ea elementor-widget elementor-widget-text-editor\" data-id=\"9c1e6ea\" 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>The mode-switch function consists of three distinct phases: a suspicion\/confirmation phase, a dissociation phase, and a reassociation phase.<\/p><p><strong>Suspicion\/confirmation phase<\/strong><\/p><p>As soon as a ventricular cycle with suspected atrial arrhythmia is detected, the fallback algorithm begins an analysis of 32 ventricular cycles (repeated in blocks of 32 ventricular cycles if necessary).<\/p><p>Atrial arrhythmia is confirmed if one of the following two criteria is met:<\/p><ol><li>28 or more ventricular cycles are suspected during the last 32 ventricular cycles (primary criterion)<\/li><li>18 or more ventricular cycles are suspected during the last two blocks of 32 ventricular cycles (secondary criterion)<\/li><\/ol><p>The primary criterion is generally met in approximately 15 seconds. The secondary criterion may allow for a fallback despite atrial underdetection.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ac90608 elementor-widget elementor-widget-image\" data-id=\"ac90608\" 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\/11\/pm_19_situations_arythmies_a19.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"pm_19_situations_arythmies_a19\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NDk1NiwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTFcL3BtXzE5X3NpdHVhdGlvbnNfYXJ5dGhtaWVzX2ExOS5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"502\" height=\"199\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a19.png\" class=\"attachment-large size-large wp-image-4956\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a19.png 502w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a19-300x119.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a19-18x7.png 18w\" sizes=\"(max-width: 502px) 100vw, 502px\" \/>\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-4f299eb elementor-widget elementor-widget-text-editor\" data-id=\"4f299eb\" 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>Dissociation phase<\/strong><\/p><p>Once one of the retreat criteria is met, the pacing mode switches from a synchronous mode (DDD or AAI-SafeR) to an asynchronous mode (DDI). The ventricular pacing rate gradually decreases (the ventricular escape interval increases by 30 ms every 12 cycles) toward the base rate, the target rate, or the rest rate.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a10023d elementor-widget elementor-widget-image\" data-id=\"a10023d\" 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\/11\/pm_19_situations_arythmies_a20.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"pm_19_situations_arythmies_a20\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NDk1NywidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTFcL3BtXzE5X3NpdHVhdGlvbnNfYXJ5dGhtaWVzX2EyMC5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"534\" height=\"307\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a20.png\" class=\"attachment-large size-large wp-image-4957\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a20.png 534w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a20-300x172.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a20-18x10.png 18w\" sizes=\"(max-width: 534px) 100vw, 534px\" \/>\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-b79b69d elementor-widget elementor-widget-text-editor\" data-id=\"b79b69d\" 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>Reassociation phase<\/strong><\/p><p>As soon as the atrial arrhythmia ceases and sinus rhythm resumes, the ventricular pacing rate is gradually adjusted to match the sinus rhythm. A-V reassociation only occurs if the atrial and ventricular rates are slower than 110 min-1. A 500 ms RetroPwatch is applied to the first reassociated ventricle to prevent the onset of a PMT.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ef8b4f2 elementor-widget elementor-widget-image\" data-id=\"ef8b4f2\" 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\/11\/pm_19_situations_arythmies_a21.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"pm_19_situations_arythmies_a21\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NDk1OCwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTFcL3BtXzE5X3NpdHVhdGlvbnNfYXJ5dGhtaWVzX2EyMS5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"579\" height=\"306\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a21.png\" class=\"attachment-large size-large wp-image-4958\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a21.png 579w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a21-300x159.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a21-18x10.png 18w\" sizes=\"(max-width: 579px) 100vw, 579px\" \/>\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-9827657 elementor-widget elementor-widget-text-editor\" data-id=\"9827657\" 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>Mode-switch programming<\/strong><\/p><p>The function is enabled by default.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0888503 elementor-widget elementor-widget-image\" data-id=\"0888503\" 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\/11\/pm_19_situations_arythmies_a22.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"pm_19_situations_arythmies_a22\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NDk1OSwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTFcL3BtXzE5X3NpdHVhdGlvbnNfYXJ5dGhtaWVzX2EyMi5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"561\" height=\"461\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a22.png\" class=\"attachment-large size-large wp-image-4959\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a22.png 561w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a22-300x247.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a22-15x12.png 15w\" sizes=\"(max-width: 561px) 100vw, 561px\" \/>\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-eadf3e3 elementor-widget elementor-widget-text-editor\" data-id=\"eadf3e3\" 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>Memory queries<\/strong><\/p><p>On the Summary screen, a comment is noted indicating:<\/p><ol><li>The time spent in withdrawal (in %)<\/li><li>The ventricular frequency during withdrawal periods<\/li><\/ol>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-dde15d8 elementor-widget elementor-widget-image\" data-id=\"dde15d8\" 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\/11\/pm_19_situations_arythmies_a23.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"pm_19_situations_arythmies_a23\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NDk2MCwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTFcL3BtXzE5X3NpdHVhdGlvbnNfYXJ5dGhtaWVzX2EyMy5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"526\" height=\"436\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a23.png\" class=\"attachment-large size-large wp-image-4960\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a23.png 526w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a23-300x249.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a23-14x12.png 14w\" sizes=\"(max-width: 526px) 100vw, 526px\" \/>\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-5fd2139 elementor-widget elementor-widget-text-editor\" data-id=\"5fd2139\" 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>Another way to access the replay episodes is to click on Diagnos. AIDA and then on the Arrhythmia tab.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-21610c2 elementor-widget elementor-widget-image\" data-id=\"21610c2\" 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\/11\/pm_19_situations_arythmies_a24.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"pm_19_situations_arythmies_a24\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NDk2MSwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTFcL3BtXzE5X3NpdHVhdGlvbnNfYXJ5dGhtaWVzX2EyNC5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"687\" height=\"950\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a24.png\" class=\"attachment-large size-large wp-image-4961\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a24.png 687w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a24-217x300.png 217w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a24-9x12.png 9w\" sizes=\"(max-width: 687px) 100vw, 687px\" \/>\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-0e659cc elementor-widget elementor-widget-image\" data-id=\"0e659cc\" 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\/11\/pm_19_situations_arythmies_a25.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"pm_19_situations_arythmies_a25\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NDk2MiwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTFcL3BtXzE5X3NpdHVhdGlvbnNfYXJ5dGhtaWVzX2EyNS5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"641\" height=\"511\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a25.png\" class=\"attachment-large size-large wp-image-4962\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a25.png 641w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a25-300x239.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a25-15x12.png 15w\" sizes=\"(max-width: 641px) 100vw, 641px\" \/>\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-bdf44b4 elementor-widget elementor-widget-text-editor\" data-id=\"bdf44b4\" 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>A detailed weekly or daily view shows: the duration of AF (time in retreat), the number of AF episodes, the ventricular rate, and the percentage of ventricular detections.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-24afd17 elementor-widget elementor-widget-image\" data-id=\"24afd17\" 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\/11\/pm_19_situations_arythmies_a26.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"pm_19_situations_arythmies_a26\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NDk2MywidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTFcL3BtXzE5X3NpdHVhdGlvbnNfYXJ5dGhtaWVzX2EyNi5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"698\" height=\"545\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a26.png\" class=\"attachment-large size-large wp-image-4963\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a26.png 698w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a26-300x234.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a26-15x12.png 15w\" sizes=\"(max-width: 698px) 100vw, 698px\" \/>\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-cf5144d elementor-widget elementor-widget-image\" data-id=\"cf5144d\" 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\/11\/pm_19_situations_arythmies_a27.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"pm_19_situations_arythmies_a27\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NDk2NCwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTFcL3BtXzE5X3NpdHVhdGlvbnNfYXJ5dGhtaWVzX2EyNy5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"686\" height=\"544\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a27.png\" class=\"attachment-large size-large wp-image-4964\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a27.png 686w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a27-300x238.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_a27-15x12.png 15w\" sizes=\"(max-width: 686px) 100vw, 686px\" \/>\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-a503993 elementor-widget elementor-widget-heading\" data-id=\"a503993\" 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\">Flutter management<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-14989f4 elementor-widget elementor-widget-text-editor\" data-id=\"14989f4\" 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 is no algorithm of this type; when a 2\/1 flutter occurs, it is necessary to shorten the duration of the atrial blanking period following ventricular pacing.\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-11cef2c elementor-widget elementor-widget-heading\" data-id=\"11cef2c\" 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\">Atrial fibrillation prevention algorithm<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a6fd617 elementor-widget elementor-widget-text-editor\" data-id=\"a6fd617\" 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>Sinus rhythm overdrive<\/strong><\/p><p>The objective is to ensure permanent atrial pacing slightly above sinus rhythm to prevent the onset of AF by reducing the atrial pacing interval (-50 ms) following the detection of non-accelerated P waves (detection outside the INOV window (and outside the DARA window)). This function is limited by a programmable maximum overdrive frequency. By default, this algorithm is inactive.<\/p><p>To avoid inappropriate acceleration on late atrial extrasystoles, there is a specific window (the INOV window, INappropriate OVerdriving). The value of this late ESA monitoring window is based on the AV or PR conduction time and the maximum overdrive frequency. If a P wave is detected in the INOV window, the sinus rhythm overdrive function is inhibited.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a312559 elementor-widget elementor-widget-image\" data-id=\"a312559\" 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\/11\/pm_19_situations_arythmies_fa11.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"pm_19_situations_arythmies_fa11\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NDk2NSwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTFcL3BtXzE5X3NpdHVhdGlvbnNfYXJ5dGhtaWVzX2ZhMTEucG5nIn0%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"659\" height=\"293\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa11.png\" class=\"attachment-large size-large wp-image-4965\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa11.png 659w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa11-300x133.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa11-18x8.png 18w\" sizes=\"(max-width: 659px) 100vw, 659px\" \/>\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-0138184 elementor-widget elementor-widget-text-editor\" data-id=\"0138184\" 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>After 16 \u201coverdriven\u201d cycles, the stimulation frequency decreases with the programmed smoothing (very slow by default). The maximum overdrive frequency is programmed here at 100 min-1.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-468ee81 elementor-widget elementor-widget-image\" data-id=\"468ee81\" 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\/11\/pm_19_situations_arythmies_fa12.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"pm_19_situations_arythmies_fa12\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NDk2NiwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTFcL3BtXzE5X3NpdHVhdGlvbnNfYXJ5dGhtaWVzX2ZhMTIucG5nIn0%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"577\" height=\"349\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa12.png\" class=\"attachment-large size-large wp-image-4966\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa12.png 577w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa12-300x181.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa12-18x12.png 18w\" sizes=\"(max-width: 577px) 100vw, 577px\" \/>\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-1da5e4e elementor-widget elementor-widget-image\" data-id=\"1da5e4e\" 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\/11\/pm_19_situations_arythmies_fa13.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"pm_19_situations_arythmies_fa13\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NDk2NywidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTFcL3BtXzE5X3NpdHVhdGlvbnNfYXJ5dGhtaWVzX2ZhMTMucG5nIn0%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"636\" height=\"930\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa13.png\" class=\"attachment-large size-large wp-image-4967\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa13.png 636w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa13-205x300.png 205w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa13-8x12.png 8w\" sizes=\"(max-width: 636px) 100vw, 636px\" \/>\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-03e596a elementor-widget elementor-widget-text-editor\" data-id=\"03e596a\" 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>Elimination of pauses on PAC<\/strong><\/p><p>The objective of this algorithm is to prevent the occurrence of atrial fibrillation on a succession of short atrial cycles (extrasystole) and long cycles (compensatory pause).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a132d63 elementor-widget elementor-widget-image\" data-id=\"a132d63\" 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\/11\/pm_19_situations_arythmies_fa14.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"pm_19_situations_arythmies_fa14\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NDk2OCwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTFcL3BtXzE5X3NpdHVhdGlvbnNfYXJ5dGhtaWVzX2ZhMTQucG5nIn0%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"678\" height=\"280\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa14.png\" class=\"attachment-large size-large wp-image-4968\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa14.png 678w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa14-300x124.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa14-18x7.png 18w\" sizes=\"(max-width: 678px) 100vw, 678px\" \/>\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-4c67306 elementor-widget elementor-widget-text-editor\" data-id=\"4c67306\" 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>On an isolated \u201clate\u201d ESA (with coupling greater than 50% of the last P-P interval), the algorithm triggers an automatic AV delay and an intermediate escape interval.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-61902d4 elementor-widget elementor-widget-image\" data-id=\"61902d4\" 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\/11\/pm_19_situations_arythmies_fa15.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"pm_19_situations_arythmies_fa15\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NDk2OSwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTFcL3BtXzE5X3NpdHVhdGlvbnNfYXJ5dGhtaWVzX2ZhMTUucG5nIn0%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"659\" height=\"328\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa15.png\" class=\"attachment-large size-large wp-image-4969\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa15.png 659w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa15-300x149.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa15-18x9.png 18w\" sizes=\"(max-width: 659px) 100vw, 659px\" \/>\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-db98da1 elementor-widget elementor-widget-text-editor\" data-id=\"db98da1\" 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>Frequency acceleration on PAC<\/strong><\/p><p>To reduce the number of extrasystoles, this algorithm allows temporary frequency acceleration (~ 5 min-1) (24 cycles) following frequent isolated atrial extrasystoles (separated by a maximum of 15 normal atrial cycles). By default, this algorithm is inactive. The acceleration phase is stopped if the maximum acceleration rate is reached or if the maximum PAC counter is reached. These two stop criteria are not programmable. This stop is followed by a \u201cdefinitive\u201d smoothing to the base rate.<\/p><p>The maximum acceleration frequency is calculated as follows: if the atrial frequency is less than 90 min-1, the escape interval represents 75% of the average of the last eight P-P intervals just before the first PAC. Otherwise, the escape interval represents 75% of the average of the last eight P-P intervals just before the first PAC + 50 ms.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3908d16 elementor-widget elementor-widget-image\" data-id=\"3908d16\" 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\/11\/pm_19_situations_arythmies_fa16.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"pm_19_situations_arythmies_fa16\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NDk3MCwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNVwvMTFcL3BtXzE5X3NpdHVhdGlvbnNfYXJ5dGhtaWVzX2ZhMTYucG5nIn0%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"661\" height=\"595\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa16.png\" class=\"attachment-large size-large wp-image-4970\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa16.png 661w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa16-300x270.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2025\/11\/pm_19_situations_arythmies_fa16-13x12.png 13w\" sizes=\"(max-width: 661px) 100vw, 661px\" \/>\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>Microport &#8211; Atrial arrhythmia management Content Mode-switch algorithm Principle of the mode-switch algorithm Arrhythmia identification is based on: an atrial rate above which the pacemaker automatically switches to DDI mode (fallback only occurs if the atrial rate exceeds 120 min-1; this parameter cannot be modified) detection of a sudden acceleration in atrial rhythm based on [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":53,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-3584","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>Microport CRM Atrial Arrhythmia Management | Cardiocases<\/title>\n<meta name=\"description\" content=\"Microport CRM mode switch &amp; atrial arrhythmia management \u2014 programming, ECG recognition &amp; tips.\" \/>\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\/devices-per-company\/microport-crm\/atrial-arrhythmia-management-microport\/\" 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