{"id":4471,"date":"2025-11-09T12:39:08","date_gmt":"2025-11-09T12:39:08","guid":{"rendered":"https:\/\/cardiocases.com\/?page_id=4471"},"modified":"2026-07-07T16:16:00","modified_gmt":"2026-07-07T16:16:00","slug":"atrial-arrhythmia-management-biotronik","status":"publish","type":"page","link":"https:\/\/cardiocases.com\/fr\/pacing-defibrillation\/devices-per-company\/biotronik\/atrial-arrhythmia-management-biotronik\/","title":{"rendered":"Atrial arrhytmia management biotronik"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"4471\" class=\"elementor elementor-4471\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ea940c6 e-con-full e-flex e-con e-parent\" data-id=\"ea940c6\" 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-bc3771b elementor-widget elementor-widget-heading\" data-id=\"bc3771b\" 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\">Biotronik - Atrial arrhythmia management<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4fc1ec3 elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"4fc1ec3\" 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__4fc1ec3\" 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__4fc1ec3\" 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__4fc1ec3\" 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-88c1d6f elementor-widget elementor-widget-heading\" data-id=\"88c1d6f\" 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-Switching<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cca7b21 elementor-widget elementor-widget-text-editor\" data-id=\"cca7b21\" 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><\/p><p><br \/><\/p><p>Dans un stimulateur double chambre Biotronik, diff\u00e9rents param\u00e8tres de l\u2019algorithme de <br \/>repli sont programmables :<\/p><p><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-742c86b elementor-widget elementor-widget-image\" data-id=\"742c86b\" 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=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/biotronik-arythmie.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"biotronik arythmie\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MTEyNDMsInVybCI6Imh0dHBzOlwvXC9jYXJkaW9jYXNlcy5jb21cL3dwLWNvbnRlbnRcL3VwbG9hZHNcLzIwMjZcLzA3XC9iaW90cm9uaWstYXJ5dGhtaWUucG5nIn0%3D\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"664\" height=\"360\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/biotronik-arythmie.png\" class=\"attachment-large size-large wp-image-11243\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/biotronik-arythmie.png 664w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/biotronik-arythmie-300x163.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/biotronik-arythmie-18x10.png 18w\" sizes=\"(max-width: 664px) 100vw, 664px\" \/>\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-aa5d6b9 elementor-widget elementor-widget-text-editor\" data-id=\"aa5d6b9\" 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><\/p><p><\/p><p><img decoding=\"async\" class=\"aligncenter wp-image-11248 size-full\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOTRONIK2-arythmie.png\" alt=\"\" width=\"564\" height=\"214\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOTRONIK2-arythmie.png 564w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOTRONIK2-arythmie-300x114.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOTRONIK2-arythmie-18x7.png 18w\" sizes=\"(max-width: 564px) 100vw, 564px\" \/><\/p><p><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6aec4bf elementor-widget elementor-widget-text-editor\" data-id=\"6aec4bf\" 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><\/p><p>\u2022 l\u2019algorithme de repli est programmable sur marche ou arr\u00eat (on\/Off)<br \/>\u2022 la fr\u00e9quence d\u2019intervention correspond \u00e0 la fr\u00e9quence atriale minimale pour laquelle<br \/>\u2022 l\u2019algorithme de repli se d\u00e9clenche (programmable entre 100 et 250 bpm, valeur nominale 160 bpm)<br \/>\u2022 la \u201ccommutation en\u201d correspond au mode dans lequel le stimulateur se replie; il d\u00e9pend du mode de <br \/>stimulation programm\u00e9 (DDD : DDI ou DDIR ; DDDR : DDIR ; VDD : VDI ou VDIR ; VDDR : VDIR)<br \/>\u2022 le crit\u00e8re de d\u00e9marrage (mode synchrone vers mode asynchrone) utilise une fen\u00eatre roulante de X (programmable entre 3 et 8, valeur nominale 5) cycles sur 8 ; il faut donc X cycles sur 8 plus rapides <br \/>que la fr\u00e9quence d\u2019intervention pour basculer vers un mode asynchrone ; la valeur 5 sur 8 permet d\u2019\u00e9viter les oscillations de mode inutiles en cas d\u2019extrasystoles atriales ou de signaux atriaux <br \/>instables ; de m\u00eame, elle permet d\u2019\u00e9viter les commutations inappropri\u00e9es sur \u00e9coute crois\u00e9e quand la <br \/>fr\u00e9quence cardiaque n\u2019est pas rapide (1 cycle sur 2 rapide : 4\/8)<\/p><p><img decoding=\"async\" class=\"alignnone wp-image-11256 size-full\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/biot-ary-3.png\" alt=\"\" width=\"570\" height=\"369\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/biot-ary-3.png 570w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/biot-ary-3-300x194.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/biot-ary-3-18x12.png 18w\" sizes=\"(max-width: 570px) 100vw, 570px\" \/><\/p><p>Le crit\u00e8re d\u2019arr\u00eat (mode asynchrone vers mode synchrone) utilise une fen\u00eatre roulante de X (programmable entre 3 et 8, valeur nominale 5) cycles sur 8 ; il faut donc X cycles sur 8 plus lents que la fr\u00e9quence d\u2019intervention pour revenir au mode synchrone.<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-11260\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOT-PM-ARY-4-300x167.png\" alt=\"\" width=\"300\" height=\"167\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOT-PM-ARY-4-300x167.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOT-PM-ARY-4-18x10.png 18w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOT-PM-ARY-4.png 621w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p><p>La modification de la fr\u00e9quence de base : il est possible de r\u00e9gler une fr\u00e9quence de base plus \u00e9lev\u00e9e (programmable entre 0 et 30 bpm plus rapide, valeur nominale de 10 bpm) lors d\u2019une commutation de mode afin d\u2019att\u00e9nuer les conditions h\u00e9modynamiques d\u00e9favorables associ\u00e9es avec l\u2019arythmie atriale.<\/p><p><strong>Interrogation des statistiques dans les m\u00e9moires du dispositif<\/strong><\/p><p>\u00a0<\/p><p><strong>Charge en FA<\/strong><br \/>La charge en FA correspond au pourcentage de temps pendant lequel le patient est en FA sur une journ\u00e9e. Le dispositif enregistre le nombre et la dur\u00e9e des \u00e9pisodes d\u2019arythmie atriale par jour pendant les 240 jours qui pr\u00e9c\u00e8dent l\u2019interrogation. Pour que l\u2019appareil enregistre un \u00e9pisode, il faut que le param\u00e8tre fr\u00e9quence atriale rapide soit sur marche et <br \/>que le crit\u00e8re 36 \u00e9v\u00e8nements sur 48 cycles rapides (plus rapides que la fr\u00e9quence atriale programm\u00e9e) soit rempli.<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11277 size-full\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOT-pm-FA-1.png\" alt=\"\" width=\"825\" height=\"529\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOT-pm-FA-1.png 825w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOT-pm-FA-1-300x192.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOT-pm-FA-1-768x492.png 768w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOT-pm-FA-1-18x12.png 18w\" sizes=\"(max-width: 825px) 100vw, 825px\" \/><\/p><p><strong>Horaire des \u00e9pisodes<\/strong><br \/>L\u2019appareil divise la journ\u00e9e en blocs de 3 heures pour d\u00e9terminer l\u2019horaire auquel ont d\u00e9marr\u00e9 les \u00e9pisodes d\u2019arythmie atriale.<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11278 size-full\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOT-pm-FA-2.png\" alt=\"\" width=\"721\" height=\"538\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOT-pm-FA-2.png 721w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOT-pm-FA-2-300x224.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOT-pm-FA-2-16x12.png 16w\" sizes=\"(max-width: 721px) 100vw, 721px\" \/><\/p><p><strong>Nombre de replis<\/strong><br \/>Le dispositif fournit le nombre d\u2019\u00e9pisodes de repli.<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-11279\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOT-pm-FA-3-300x212.png\" alt=\"\" width=\"300\" height=\"212\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOT-pm-FA-3-300x212.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOT-pm-FA-3-18x12.png 18w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOT-pm-FA-3.png 519w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p><p>\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9e35b52 elementor-widget elementor-widget-text-editor\" data-id=\"9e35b52\" 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>Intervention rate<\/strong><\/p><p>The Intervention rate is the minimum atrial rate at which mode switching will occur.<\/p><p><strong>\u00a0<\/strong><strong>Switch to Pacing<\/strong><\/p><p>Switch to pacing is the mode the device reverts to during mode switch. The choices for mode switch modes are based on the programmed device mode.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7f54640 elementor-widget elementor-widget-image\" data-id=\"7f54640\" 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\/2026\/01\/BIOTRONIK3.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"BIOTRONIK3\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NjUxMSwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNlwvMDFcL0JJT1RST05JSzMuanBnIn0%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"256\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/01\/BIOTRONIK3.jpg\" class=\"attachment-large size-large wp-image-6511\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/01\/BIOTRONIK3.jpg 826w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/01\/BIOTRONIK3-300x96.jpg 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/01\/BIOTRONIK3-768x245.jpg 768w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/01\/BIOTRONIK3-18x6.jpg 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-2dadeb2 elementor-widget elementor-widget-text-editor\" data-id=\"2dadeb2\" 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><\/p><p><strong>Basic rate during mode switching<\/strong><\/p><p>This refers to the basic pacing rate while mode switching is active. The value selected is added to the programmed basic rate value to become the basic rate during mode switch. By default this value is +10 bpm.<\/p><p><strong>Rate stabilization during mode switching<\/strong><\/p><p>This feature is designed to minimize sudden rate changes in the ventricle that can occur with atrial fibrillation and intact conduction. The device determines a four-beat ventricular rate average and provides ventricular support pacing any time the rate goes below the averaged rate minus 10 bpm.<\/p><p><strong>2:1 Lock-In protection<\/strong><\/p><p>2:1 Lock-In Management is an expansion to the Mode Switch feature. During an episode of atrial tachycardia or atrial flutter, if the AV delay and far-field protection intervals are programmed such that every second intrinsic atrial event falls within the far-field protection window, the pacemaker may not switch and inappropriate fast tracking up to the upper tracking rate may occur. The 2:1 Lock-in protection feature has been designed to detect the tachycardia and promote Mode Switching.<\/p><p>The 2:1 Lock-In Management feature consists of suspicion, confirmation and termination phases:<\/p><p><em>Suspicion<\/em><\/p><p>The pacemaker suspects 2:1 Lock-In when the following criteria are met:<\/p><ul><li>the ventricular paced response rate is greater than 100 bpm<\/li><li>8 consecutive V-pace\u2014A-sense (VpAs) sequences have occurred with an average length shorter than the 2:1 Lock-In VA Length Criterion; this VA Length Criterion is based on the AV delay (AsVp) and far-field protection intervals (FFB)<\/li><li>the mean deviation of these 8 VpAs intervals is less than the 2:1 Lock-In Stability Criterion, defined as 50 ms<\/li><\/ul><p><em>Confirmation<\/em><\/p><p>When the suspicion criteria have been met, the AV delay is increased by the programmed far-field protection interval (up to a maximum of 300 ms). If the event sensed in the FFP window moves with the ventricular paced event during the extension of the AV Delay, it is a cross-talk event due to ventricular pacing. However, if it does not move with the ventricular paced event when the AV Delay is extended, it is an intrinsic atrial event (atrial flutter).<\/p><ul><li>if an atrial event is detected within the AV delay and the detected atrial rate is less than the programmed Mode Switch Detection rate, a 2:1 Lock-In is confirmed<\/li><li>otherwise, 2:1 Lock-In is not confirmed, and the AV delay is gradually decreased to the programmed value; the 2:1 Lock-In Management feature is suspended for 120 seconds<\/li><\/ul><p><em>Termination<\/em><\/p><ul><li>the pacemaker immediately switches to a non-atrial tracking mode when the confirmation criteria have been met<\/li><li>a mode switch events is recorded in memory<\/li><\/ul><p><\/p><p><strong>Algorithme 2:1 Lock-In protection<\/strong><br \/>Il existe un algorithme (protection 2:1 lock in) qui a pour objectif de rechercher l\u2019existence d\u2019une sous-d\u00e9tection d\u2019un flutter masqu\u00e9 avec absence de repli car une activit\u00e9 atriale sur deux tombe dans la protection atriale far-field post stimulation ventriculaire.<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-11271 size-full aligncenter\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/LOG-IN-2.1.png\" alt=\"\" width=\"870\" height=\"333\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/LOG-IN-2.1.png 870w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/LOG-IN-2.1-300x115.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/LOG-IN-2.1-768x294.png 768w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/LOG-IN-2.1-18x7.png 18w\" sizes=\"(max-width: 870px) 100vw, 870px\" \/><\/p><p>Quand le dispositif d\u00e9tecte 8 \u00e9v\u00e8nements atriaux cons\u00e9cutifs dans la fen\u00eatre far-field atriale, et que le rythme ventriculaire stimul\u00e9 est sup\u00e9rieur \u00e0 100 bpm, il suspecte l\u2019existence d\u2019un flutter masqu\u00e9 2\/1 et allonge le d\u00e9lai AV \u00e0 une valeur maximale de 300 ms sur un cycle. Si le cycle atrial s\u2019allonge, le dispositif conclut \u00e0 une \u00e9coute crois\u00e9e et ne commute pas ; en revanche, si les cycles atriaux ne sont pas modifi\u00e9s par le changement de d\u00e9lai AV, il conclut \u00e0 un flutter atrial et commute.<img loading=\"lazy\" decoding=\"async\" class=\"wp-image-11272 size-full aligncenter\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOT-ALGO-2.1.png\" alt=\"\" width=\"550\" height=\"327\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOT-ALGO-2.1.png 550w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOT-ALGO-2.1-300x178.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIOT-ALGO-2.1-18x12.png 18w\" sizes=\"(max-width: 550px) 100vw, 550px\" \/><\/p><p>Fonctionnement de l\u2019algorithme protection 2 :1 lock in : 8 cycles cons\u00e9cutifs avec alternance As et Ars (FFP) ; allongement du d\u00e9lai AV ; le second cycle devient Ars sans modification de la dur\u00e9e des cycles atriaux ; diagnostic de flutter et commutation de mode.<\/p><p><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0246287 elementor-widget elementor-widget-text-editor\" data-id=\"0246287\" 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><\/p><p><strong>Overdrive auriculaire<\/strong><\/p><ul><li>Il s\u2019agit d\u2019un algorithme permettant \u00ab l\u2019overdrive\u00bb de l\u2019activation atriale spontan\u00e9e en augmentant la fr\u00e9quence de stimulation atriale<\/li><\/ul><p><\/p>\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>Biotronik &#8211; Atrial arrhythmia management Content Mode-Switching \u00a0 Intervention rate The Intervention rate is the minimum atrial rate at which mode switching will occur. \u00a0Switch to Pacing Switch to pacing is the mode the device reverts to during mode switch. The choices for mode switch modes are based on the programmed device mode. Basic rate [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":55,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-4471","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>Biotronik Pacemaker Atrial Arrhythmia Mgmt | Cardiocases<\/title>\n<meta name=\"description\" content=\"Biotronik pacemaker mode switch &amp; atrial arrhythmia management \u2014 programming, ECG recognition &amp; tips. 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