{"id":691,"date":"2025-07-31T14:09:07","date_gmt":"2025-07-31T14:09:07","guid":{"rendered":"https:\/\/cardiocases.com\/?page_id=691"},"modified":"2026-07-15T16:50:03","modified_gmt":"2026-07-15T16:50:03","slug":"pacing-biotronik","status":"publish","type":"page","link":"https:\/\/cardiocases.com\/fr\/pacing-defibrillation\/devices-per-company\/biotronik\/pacing-biotronik\/","title":{"rendered":"Pacing Biotronik"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"691\" class=\"elementor elementor-691\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1b4c577 e-con-full e-flex e-con e-parent\" data-id=\"1b4c577\" 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-c36627e elementor-widget elementor-widget-heading\" data-id=\"c36627e\" 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 - Pacing \/ Detection<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6afd3f6 elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"6afd3f6\" 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__6afd3f6\" 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__6afd3f6\" 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__6afd3f6\" 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-5bd8d30 elementor-widget elementor-widget-text-editor\" data-id=\"5bd8d30\" 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><h4><strong>Les seuils automatiques (Biotronik) en 10 points<\/strong><\/h4><p><strong>Seuils automatiques ventriculaires: contr\u00f4le de capture ventriculaire<\/strong> <br \/>1) La mesure du seuil ventriculaire est bas\u00e9e sur l\u2019\u00e9valuation de la r\u00e9ponse \u00e9voqu\u00e9e<br \/>2) Le dispositif mesure p\u00e9riodiquement le seuil de stimulation ventriculaire : <br \/>programmable sur Intervalle (toutes les X heures) ou sur Heure de la journ\u00e9e (heure <br \/>programmable dans la journ\u00e9e) et lors d\u2019une perte de capture diagnostiqu\u00e9e lors du <br \/>suivi <br \/>3) L\u2019amplitude de stimulation ventriculaire est programm\u00e9e automatiquement \u00e0 une <br \/>valeur programmable (valeur nominale de 0.5 V) au-dessus du seuil mesur\u00e9 <br \/>4) La dur\u00e9e d\u2019impulsion ne peut pas d\u00e9passer 0.4 ms <br \/>5) Il existe une v\u00e9rification cycle-\u00e0-cycle de l\u2019efficacit\u00e9 de la capture ventriculaire bas\u00e9e <br \/>sur l\u2019analyse de la r\u00e9ponse \u00e9voqu\u00e9e avec stimulation de s\u00e9curit\u00e9 lors d\u2019une perte de <br \/>capture<\/p><p><strong>Seuils automatiques atriaux: contr\u00f4le de capture atriale<\/strong> <br \/>6) La mesure du seuil atrial est bas\u00e9e sur la pr\u00e9sence (perte de capture) ou l\u2019absence <br \/>(capture) de signaux atriaux spontan\u00e9s (\u00e9valuation indirecte de la capture)<br \/>7) Le dispositif mesure p\u00e9riodiquement le seuil de stimulation atriale : programmable sur Intervalle (toutes les X heures) ou sur Heure de la journ\u00e9e (heure programmable dans la <br \/>journ\u00e9e) ; valeur nominale : une mesure par jour <br \/>8) Le dispositif adapte automatiquement l\u2019amplitude de stimulation avec une marge de <br \/>s\u00e9curit\u00e9 de 1 V (valeur nominale programmable) au-dessus de la valeur du seuil mesur\u00e9<br \/>9) La dur\u00e9e d\u2019impulsion est non programmable (0.4 ms) <br \/>10) Il n\u2019y a pas de v\u00e9rification cycle-\u00e0-cycle de l\u2019efficacit\u00e9 de la capture atriale ; l\u2019adaptation <br \/>de l\u2019amplitude de stimulation atriale est bas\u00e9e sur le concept de l\u2019Autoseuil ; la m\u00eame <br \/>amplitude est d\u00e9livr\u00e9e (seuil mesur\u00e9 + marge de s\u00e9curit\u00e9) jusqu\u2019\u00e0 la prochaine mesure <br \/>de seuil automatique<\/p><p><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fcec844 elementor-widget elementor-widget-text-editor\" data-id=\"fcec844\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h5><\/h5><h5><strong>Contr\u00f4le de capture ventriculaire<\/strong><\/h5><p><strong>G\u00e9n\u00e9ralit\u00e9s<\/strong><\/p><p>Le syst\u00e8me de contr\u00f4le de capture ventriculaire r\u00e8gle automatiquement l\u2019amplitude <br \/>d\u2019impulsion ventriculaire du stimulateur au-dessus du seuil de stimulation mesur\u00e9 <br \/>r\u00e9guli\u00e8rement avec une marge programmable et permet une v\u00e9rification de la capture <br \/>cycle \u00e0 cycle.<\/p><ul><li>\u00a0Contr\u00f4le de capture ventriculaire sur marche : mesure du seuil de stimulation ventriculaire + adaptation de la programmation avec contr\u00f4le cycle \u00e0 cycle<\/li><li>\u00a0L\u2019heure et\/ou la fr\u00e9quence des mesures de seuils sont programmables<\/li><li>V\u00e9rification cycle \u00e0 cycle de la capture bas\u00e9e sur l\u2019analyse de la r\u00e9ponse \u00e9voqu\u00e9e<\/li><li>Marge de s\u00e9curit\u00e9 programmable (valeur nominale + 0.5 V)<\/li><li>Amplitude maximale pouvant \u00eatre d\u00e9livr\u00e9e : 4,8 V pour 0,4 ms \/ Amplitude minimale pouvant \u00eatre d\u00e9livr\u00e9e : 0.7 V pour 0.4 ms<\/li><li>\u00a0Contr\u00f4le de capture ventriculaire sur ATM : mesure du seuil de stimulation ventriculaire sans adaptation<\/li><li>Contr\u00f4le de capture ventriculaire sur arr\u00eat : programmation fixe (pas de seuil automatique r\u00e9alis\u00e9)<\/li><\/ul><p>\u00a0<\/p><p><strong>Contr\u00f4le de capture ventriculaire en pratique<\/strong> <br \/>Diff\u00e9rents param\u00e8tres sont programmables:<\/p><ul><li>L\u2019amplitude de d\u00e9part qui correspond \u00e0 la valeur de d\u00e9part de la mesure de seuil ; valeur nominale 3 V (de 2.4 \u00e0 4.8 V)<\/li><li>La marge de s\u00e9curit\u00e9 qui correspond \u00e0 la valeur ajout\u00e9e en amplitude \u00e0 la mesure du seuil ; valeur nominale 0.5 V (de 0.3 \u00e0 1.2 V)<\/li><li>Quelle que soit la valeur du seuil et la marge de s\u00e9curit\u00e9, l\u2019amplitude de stimulation ne peut pas descendre en dessous de 0.7 V<\/li><li>\u00a0L\u2019heure de recherche et l\u2019intervalle de recherche qui correspondent au moment o\u00f9 le seuil est syst\u00e9matiquement mesur\u00e9 ; valeur nominale 2h00 du matin<img fetchpriority=\"high\" decoding=\"async\" class=\"aligncenter wp-image-11452 size-full\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation.png\" alt=\"\" width=\"640\" height=\"436\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation.png 640w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-300x204.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-18x12.png 18w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/li><\/ul><p>Le contr\u00f4le automatique de seuil est r\u00e9alis\u00e9 en diff\u00e9rentes \u00e9tapes:<\/p><ul><li>\u00a0Mesure de la r\u00e9ponse \u00e9voqu\u00e9e<\/li><li>\u00a0Mesure de l\u2019art\u00e9fact de polarisation<\/li><li>Mesure du seuil par pas de 0,6 V puis mesure du seuil par pas de 0,1 V<\/li><\/ul><p>\u00a0<\/p><p><strong>Mesure de la r\u00e9ponse \u00e9voqu\u00e9e et de l\u2019art\u00e9fact de polarisation<\/strong> <br \/>Pour permettre une \u00e9valuation efficace de la capture, il est indispensable de pouvoir <br \/>diff\u00e9rencier r\u00e9ponse \u00e9voqu\u00e9e et art\u00e9fact de polarisation.<\/p><p><img decoding=\"async\" class=\"aligncenter wp-image-11453 size-full\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-2.png\" alt=\"\" width=\"547\" height=\"241\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-2.png 547w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-2-300x132.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-2-18x8.png 18w\" sizes=\"(max-width: 547px) 100vw, 547px\" \/><\/p><ul><li>\u00a05 stimulations sont d\u00e9livr\u00e9es \u00e0 la fr\u00e9quence programm\u00e9e avec un d\u00e9lai AV court (15 ms post-d\u00e9tection atriale et 50 ms post-stimulation atriale) pour assurer une capture ventriculaire effective sans fusion et mettre en \u00e9vidence la r\u00e9ponse \u00e9voqu\u00e9e et l\u2019art\u00e9fact de polarisation<\/li><li>\u00a05 s\u00e9quences de 2 stimulations ventriculaires avec le m\u00eame d\u00e9lai AV sont alors d\u00e9livr\u00e9es avec un couplage court de 100 ms entre les 2 stimulations ventriculaires (sur la premi\u00e8re, capture : \u00e9valuation <br \/>de la r\u00e9ponse \u00e9voqu\u00e9e et de l\u2019art\u00e9fact de polarisation ; sur la seconde, absence de capture : \u00e9valuation <br \/>uniquement de l\u2019art\u00e9fact de polarisation)<\/li><\/ul><p><img decoding=\"async\" class=\"aligncenter wp-image-11455 size-full\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-3.png\" alt=\"\" width=\"652\" height=\"229\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-3.png 652w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-3-300x105.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-3-18x6.png 18w\" sizes=\"(max-width: 652px) 100vw, 652px\" \/><\/p><ul><li>\u00a0Pour diff\u00e9rencier r\u00e9ponse \u00e9voqu\u00e9e et art\u00e9fact de polarisation, le dispositif analyse l\u2019amplitude positive et n\u00e9gative des signaux, le moment o\u00f9 le signal croise la ligne de base et diff\u00e9rentes int\u00e9grales du signal \u00e0 diff\u00e9rents moments<\/li><li>L\u2019analyse du signal est valid\u00e9e si une diff\u00e9rence significative existe entre l\u2019amplitude de la r\u00e9ponse \u00e9voqu\u00e9e et celle de l\u2019art\u00e9fact de polarisation<\/li><li>\u00a0Pour v\u00e9rifier l\u2019existence de la capture, il existe une premi\u00e8re phase de blanking de 20 ms puis une fen\u00eatre de recherche de la r\u00e9ponse \u00e9voqu\u00e9e de 60 ms avec possibilit\u00e9 d\u2019une stimulation de secours apr\u00e8s 130 ms si absence de capture<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11456 size-full\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-4.png\" alt=\"\" width=\"879\" height=\"450\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-4.png 879w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-4-300x154.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-4-768x393.png 768w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-4-18x9.png 18w\" sizes=\"(max-width: 879px) 100vw, 879px\" \/><\/li><\/ul><p><strong>Mesure automatique du seuil ventriculaire<\/strong><\/p><ul><li>Baisse de l\u2019amplitude de 0.6 V sur chaque cycle ventriculaire<\/li><li>Quand la perte de capture est mise en \u00e9vidence, le test reprend \u00e0 l\u2019amplitude minimale assurant la derni\u00e8re capture avec baisse de l\u2019amplitude de 0.1 V<\/li><li>\u00a0Quand la perte de capture est mise en \u00e9vidence, une stimulation de secours \u00e0 plus forte amplitude survient 100 ms apr\u00e8s la premi\u00e8re (augmentation de l\u2019amplitude de 0.1 V avec une dur\u00e9e d\u2019impulsion de 1 ms)<\/li><li>Un second stimulus \u00e0 la m\u00eame amplitude que celle associ\u00e9e \u00e0 une perte de capture est d\u00e9livr\u00e9 ; si le second stimulus capture, un troisi\u00e8me est d\u00e9livr\u00e9 puis l\u2019amplitude continue \u00e0 diminuer ; si le 2\u00e8me stimulus ne capture pas, une impulsion de s\u00e9curit\u00e9 est d\u00e9livr\u00e9e et le seuil est d\u00e9termin\u00e9<\/li><\/ul><p>\u00a0<\/p><p><strong>Adaptation de l\u2019amplitude de stimulation<\/strong><\/p><ul><li>Une fois que le seuil a \u00e9t\u00e9 mesur\u00e9, l\u2019amplitude de stimulation est automatiquement adapt\u00e9e (marge de 0.5 V en nominal) avec une v\u00e9rification cycle \u00e0 cycle de l\u2019efficacit\u00e9 de la capture<\/li><li>\u00a0Quand une absence de capture est diagnostiqu\u00e9e sur un cycle, une stimulation de secours survient 100 ms apr\u00e8s la premi\u00e8re (augmentation de l\u2019amplitude de 0.1 V avec une dur\u00e9e d\u2019impulsion de 1 ms)<\/li><li>\u00a0Une modification du d\u00e9lai AV sur 3 battements est alors r\u00e9alis\u00e9e (extension du d\u00e9lai AV) pour s\u2019assurer de l\u2019absence de fusion<\/li><li>Si la perte de capture se maintient, le d\u00e9lai AV est de nouveau raccourci<\/li><li>Si 3 pertes de capture cons\u00e9cutives sont mises en \u00e9vidence, une nouvelle mesure du seuil d\u00e9bute avec adaptation de l\u2019amplitude en fonction de la nouvelle valeur<\/li><\/ul><p><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-33d1026 elementor-widget elementor-widget-text-editor\" data-id=\"33d1026\" 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><h5><strong>Contr\u00f4le de capture atriale (CCA)<\/strong><\/h5><p><strong>G\u00e9n\u00e9ralit\u00e9s<\/strong><\/p><p>Il existe un certain nombre de similitudes avec le contr\u00f4le de capture ventriculaire mais <br \/>\u00e9galement quelques diff\u00e9rences. Le contr\u00f4le automatique de la capture atriale n\u2019est pas <br \/>bas\u00e9 sur l\u2019analyse de la r\u00e9ponse \u00e9voqu\u00e9e mais sur la mise en \u00e9vidence de signaux atriaux <br \/>d\u00e9tect\u00e9s r\u00e9v\u00e9lateurs de la perte de capture : reprise du rythme intrins\u00e8que ou conduction <br \/>r\u00e9trograde si patient d\u00e9pendant sur l\u2019oreillette (dysfonction sinusale).<\/p><ul><li>Contr\u00f4le de capture atriale sur marche : mesure automatique du seuil de stimulation atriale + adaptation de la programmation<\/li><li>Seuil de stimulation atriale r\u00e9alis\u00e9 syst\u00e9matiquement tous les jours \u00e0 2h00 du matin (horaire programmable ou programmable suivant des intervalles : 24h, 12h, 6h, 3h, 1h, 0.3h, 0.1h)<\/li><li>Seuil de stimulation atriale bas\u00e9 sur la mise en \u00e9vidence de signaux atriaux d\u00e9tect\u00e9s r\u00e9v\u00e9lateurs de la perte de capture (\u00e9valuation indirecte de la perte de capture)<\/li><li>Pas de v\u00e9rification cycle \u00e0 cycle de la capture ; adaptation de l\u2019amplitude pour les 24 heures suivantes (ou les 12 heures, 6 heures &#8230; en fonction de la programmation)<\/li><li>Marge de s\u00e9curit\u00e9 programmable (valeur nominale + 1 V)<\/li><li>Amplitude maximale pouvant \u00eatre d\u00e9livr\u00e9e : amplitude de d\u00e9marrage du test soit 4,8V pour 0,4 ms<\/li><li>\u00a0Amplitude minimale pouvant \u00eatre d\u00e9livr\u00e9e programmable : valeur nominale 1 V<\/li><li>Contr\u00f4le de capture atriale sur ATM : mesure automatique du seuil de stimulation atriale sans adaptation<\/li><li>\u00a0Contr\u00f4le de capture atriale sur arr\u00eat : pas de mesure automatique de seuil<\/li><\/ul><p><strong>La mesure automatique du seuil atrial en pratique<\/strong> <br \/>Les param\u00e8tres programmables sont les m\u00eames (possibilit\u00e9 marche, arr\u00eat et ATM) que pour le ventricule mais certaines valeurs nominales sont diff\u00e9rentes : l\u2019amplitude minimale est programmable avec une valeur nominale de 1 V ; marge de s\u00e9curit\u00e9, valeur nominale de 1 V.<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11460 size-full\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-atriale.png\" alt=\"\" width=\"478\" height=\"330\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-atriale.png 478w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-atriale-300x207.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-atriale-18x12.png 18w\" sizes=\"(max-width: 478px) 100vw, 478px\" \/><\/p><p>Pour la mesure du seuil, la fr\u00e9quence de stimulation atriale est augment\u00e9e pour d\u00e9passer <br \/>la fr\u00e9quence atriale spontan\u00e9e.<\/p><ul><li>\u00a0Si la fr\u00e9quence spontan\u00e9e est inf\u00e9rieure \u00e0 108 bpm, le seuil est r\u00e9alis\u00e9 \u00e0 une fr\u00e9quence plus \u00e9lev\u00e9e de 20% par rapport \u00e0 la fr\u00e9quence spontan\u00e9e<\/li><li>Si la fr\u00e9quence spontan\u00e9e est sup\u00e9rieure \u00e0 108 bpm, le test ne peut pas \u00eatre r\u00e9alis\u00e9<\/li><li>Le test est r\u00e9alis\u00e9 en mode DDI avec un d\u00e9lai AV de 50 ms et un blanking atrial post stimulation ventriculaire de 150 ms<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11461 size-medium\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-atriale-2-300x201.png\" alt=\"\" width=\"300\" height=\"201\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-atriale-2-300x201.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-atriale-2-18x12.png 18w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-atriale-2.png 454w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/li><li>La proc\u00e9dure de mesure du seuil d\u00e9bute \u00e0 la valeur programm\u00e9e avec r\u00e9duction par pas de 0.6 V jusqu\u2019\u00e0 la mise en \u00e9vidence de 2 cycles atriaux spontan\u00e9s sur 5<\/li><li>\u00a0La deuxi\u00e8me phase de pas de 0.1 V est identique \u00e0 celle du contr\u00f4le ventriculaire<\/li><li>\u00a0Chaque amplitude est test\u00e9e 5 fois \u00e0 la suite<\/li><li><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11462 size-medium\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-atriale-3-282x300.png\" alt=\"\" width=\"282\" height=\"300\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-atriale-3-282x300.png 282w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-atriale-3-11x12.png 11w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-atriale-3.png 517w\" sizes=\"(max-width: 282px) 100vw, 282px\" \/><\/li><\/ul><p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-11464 aligncenter\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-atriale-4-300x161.png\" alt=\"\" width=\"300\" height=\"161\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-atriale-4-300x161.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-atriale-4-18x10.png 18w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-atriale-4.png 604w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p><ul><li>} Une stimulation atriale de synchronisation (restauration d\u2019une synchronisation atrio-ventriculaire normale pour \u00e9viter la survenue d\u2019une TRE) est d\u00e9livr\u00e9e \u00e0 la fin de chaque s\u00e9rie de 5 stimuli<\/li><li>Cette stimulation atriale est d\u2019amplitude variable en fonction du pas (0.1 ou 0.6 V) et de l\u2019existence d\u2019une capture<img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-11465 aligncenter\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-atriale-5-300x177.png\" alt=\"\" width=\"300\" height=\"177\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-atriale-5-300x177.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-atriale-5-18x12.png 18w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-stimulation-atriale-5.png 619w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>Le seuil mesur\u00e9 est alors confirm\u00e9 en 2 \u00e9tapes:<\/li><li>\u00a0Une amplitude de stimulation sup\u00e9rieure de 0.3 V par rapport au seuil mesur\u00e9 est r\u00e9p\u00e9t\u00e9e 5 fois (\u00e9tape 1) puis une amplitude de stimulation inf\u00e9rieure de 0.3 V par rapport au seuil mesur\u00e9 est r\u00e9p\u00e9t\u00e9e 2 fois (\u00e9tape 2)<\/li><li>2 pertes de capture sur 5 suffisent<\/li><li>Le seuil est confirm\u00e9 si la capture est pr\u00e9sente durant l\u2019\u00e9tape 1 et absente durant l\u2019\u00e9tape 2<\/li><\/ul><p>L\u2019amplitude de stimulation est adapt\u00e9e en ajoutant la valeur de la marge de s\u00e9curit\u00e9.<\/p><p><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cc4be78 elementor-widget elementor-widget-text-editor\" data-id=\"cc4be78\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h4><\/h4><h4><strong>Sensibilit\u00e9 &#8211; Boston Scientific<\/strong><\/h4><p><strong>G\u00e9n\u00e9ralit\u00e9s<\/strong> <br \/>Les stimulateurs Boston Scientific disposent d\u2019un contr\u00f4le automatique de gain (CAG) <br \/>digital qui ajuste de fa\u00e7on dynamique le niveau de sensibilit\u00e9 dans l\u2019oreillette et dans le <br \/>ventricule.<br \/>Le mode de d\u00e9tection peut donc \u00eatre programm\u00e9 sur CAG ou sur Fixe dans l\u2019oreillette <br \/>et dans le ventricule. Les valeurs de Sensibilit\u00e9 atriales et ventriculaires peuvent \u00eatre <br \/>programm\u00e9es de fa\u00e7on ind\u00e9pendante, le type de m\u00e9thode de d\u00e9tection utilis\u00e9 (CAG ou <br \/>Fixe) devant \u00eatre le m\u00eame pour les 2 chambres.<img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11469 size-full\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIO-sensibilite.png\" alt=\"\" width=\"735\" height=\"406\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIO-sensibilite.png 735w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIO-sensibilite-300x166.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/BIO-sensibilite-18x10.png 18w\" sizes=\"(max-width: 735px) 100vw, 735px\" \/><\/p><p>Si la d\u00e9tection est programm\u00e9e sur CAG, la valeur nominale de sensibilit\u00e9 est programm\u00e9e <br \/>\u00e0 0.6 mV pour le ventricule et \u00e0 0.25 mV pour l\u2019oreillette.<br \/>Un convertisseur 12-bit permet de convertir le signal \u00e9lectrique en valeur num\u00e9rique. Pour <br \/>optimiser la d\u00e9tection des signaux, le dispositif ajuste la sensibilit\u00e9 ventriculaire selon un <br \/>contr\u00f4le automatique de gain \u00e0 2 composantes : lente et rapide.<br \/>Le CAG utilise une composante dite \u00ab lente \u00bb, pour fixer un intervalle de recherche <br \/>de l\u2019amplitude du prochain QRS. En calculant une \u201cmoyenne\u201d des pics des signaux <br \/>pr\u00e9c\u00e9dents, la composante \u00ab lente \u00bb d\u00e9finit une zone dans laquelle se trouvera <br \/>probablement le pic suivant et fixe cette zone entre une valeur minimale et maximale.<br \/>La composante \u00ab rapide \u00bb du CAG permet, apr\u00e8s un \u00e9v\u00e8nement ventriculaire, de maintenir <br \/>une valeur de sensibilit\u00e9 \u00e9lev\u00e9e apr\u00e8s la d\u00e9tection, puis de d\u00e9cr\u00e9menter la valeur de <br \/>sensibilit\u00e9 progressivement pour rendre l\u2019appareil de plus en plus sensible.<br \/>A la fin de la p\u00e9riode r\u00e9fractaire + 15ms, la valeur descend \u00e0 75% du pic d\u00e9tect\u00e9, ou 75% du <br \/>Pic Moyen si le dernier \u00e9v\u00e8nement ventriculaire est stimul\u00e9.<br \/>Pour un QRS d\u00e9tect\u00e9, le CAG diminue ensuite la valeur \u00e0 7\/8 de la valeur pr\u00e9c\u00e9dente toutes les 35 ms. Cette d\u00e9croissance continue jusqu\u2019\u00e0 atteindre la valeur la plus \u00e9lev\u00e9e entre le Min ou la valeur programm\u00e9e de sensibilit\u00e9.<br \/>Si le dernier \u00e9v\u00e8nement ventriculaire est stimul\u00e9, le CAG diminue ensuite \u00e0 chaque pas la <br \/>valeur \u00e0 7\/8 de la valeur pr\u00e9c\u00e9dente, mais la dur\u00e9e du pas est d\u00e9termin\u00e9e par la fr\u00e9quence <br \/>minimum de stimulation : la valeur Min (ou la valeur de sensibilit\u00e9 programm\u00e9e) est atteinte 150 ms avant la prochaine stimulation programm\u00e9e.<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone  wp-image-11470\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-sensibilite-2-300x205.png\" alt=\"\" width=\"300\" height=\"205\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-sensibilite-2-300x205.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-sensibilite-2-18x12.png 18w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-sensibilite-2.png 727w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p><p>La p\u00e9riode r\u00e9fractaire de 135 ms apr\u00e8s un \u00e9v\u00e9nement d\u00e9tect\u00e9 se compose d\u2019une p\u00e9riode <br \/>r\u00e9fractaire absolue de 50 ms, d\u2019une fen\u00eatre de bruit de 40 ms (r\u00e9enclenchable en cas de bruit d\u00e9tect\u00e9) et d\u2019une p\u00e9riode r\u00e9fractaire absolue de 35 ms.<br \/>En mode d\u00e9tection fixe, la sensibilit\u00e9 atriale est programmable entre 0.15 et 10 mV avec une valeur nominale de 0.75 mV.<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-11471\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-sensibilite-3-300x207.png\" alt=\"\" width=\"300\" height=\"207\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-sensibilite-3-300x207.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-sensibilite-3-18x12.png 18w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-sensibilite-3.png 366w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p><p>En mode d\u00e9tection fixe, la sensibilit\u00e9 ventriculaire est programmable entre 0.25 et 10 mV <br \/>avec une valeur nominale de 2.5 mV.<\/p><p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-11472\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-sensibilite-4-300x203.png\" alt=\"\" width=\"300\" height=\"203\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-sensibilite-4-300x203.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-sensibilite-4-18x12.png 18w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/07\/bio-sensibilite-4.png 394w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/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; Pacing \/ Detection Content Sensibilit\u00e9 &#8211; Boston Scientific G\u00e9n\u00e9ralit\u00e9s Les stimulateurs Boston Scientific disposent d\u2019un contr\u00f4le automatique de gain (CAG) digital qui ajuste de fa\u00e7on dynamique le niveau de sensibilit\u00e9 dans l\u2019oreillette et dans le ventricule.Le mode de d\u00e9tection peut donc \u00eatre programm\u00e9 sur CAG ou sur Fixe dans l\u2019oreillette et dans le [&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-691","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 Pacing Parameters | Cardiocases<\/title>\n<meta name=\"description\" content=\"Biotronik pacemaker pacing \u2014 output, threshold, impedance &amp; ECG tracings. 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