{"id":3652,"date":"2025-10-08T19:02:24","date_gmt":"2025-10-08T19:02:24","guid":{"rendered":"https:\/\/cardiocases.com\/?page_id=3652"},"modified":"2026-01-02T12:59:23","modified_gmt":"2026-01-02T12:59:23","slug":"sensing-and-detection-boston-scientific","status":"publish","type":"page","link":"https:\/\/cardiocases.com\/fr\/pacing-defibrillation\/devices-per-company\/boston-scientific\/sensing-and-detection-boston-scientific\/","title":{"rendered":"Sensing and detection Boston Scientific"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"3652\" class=\"elementor elementor-3652\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-269c3ad e-con-full e-flex e-con e-parent\" data-id=\"269c3ad\" data-element_type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4a110ad elementor-widget elementor-widget-heading\" data-id=\"4a110ad\" data-element_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\">Boston Scientific - <\/span>D\u00e9tection<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-615d4a1 elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"615d4a1\" data-element_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\tG\u00e9n\u00e9ralit\u00e9s\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__615d4a1\" 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__615d4a1\" 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__615d4a1\" 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-f46c07b elementor-widget elementor-widget-heading\" data-id=\"f46c07b\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Seuil automatique de l'oreillette (seuil automatique de l'oreillette droite, RAAT)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-09e63e3 elementor-widget elementor-widget-text-editor\" data-id=\"09e63e3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Seuil automatique de l'oreillette droite (RAAT) :<\/strong><\/p><ul><li>required bipolar atrial lead<\/li><li>les tests de seuil sont programm\u00e9s toutes les 21 heures<\/li><li>l'\u00e9valuation de la capture auriculaire est bas\u00e9e sur la pr\u00e9sence d'une r\u00e9ponse \u00e9voqu\u00e9e auriculaire<\/li><li>l'amplitude est automatiquement ajust\u00e9e \u00e0 2X la plus \u00e9lev\u00e9e des 7 derniers jours avec des tests de seuil r\u00e9ussis \u00e0 une largeur d'impulsion non programmable de 0,4 ms<\/li><li>la sortie est limit\u00e9e entre 2,0 V et 5,0 V<\/li><\/ul><p>\u00a0<\/p><p><strong>D\u00e9termination du seuil de stimulation du nerf auditif<\/strong><\/p><ul><li>l'\u00e9valuation de la capture auriculaire est bas\u00e9e sur la pr\u00e9sence d'une r\u00e9ponse \u00e9voqu\u00e9e auriculaire<\/li><li>la fr\u00e9quence de stimulation auriculaire est bas\u00e9e sur la limite inf\u00e9rieure de la fr\u00e9quence ou sur la fr\u00e9quence du capteur et doit \u00eatre augment\u00e9e de 10 bpm pour assurer la stimulation auriculaire.<\/li><li>la tension diminue tous les 3 battements captur\u00e9s<\/li><li>recherche 2 temps de perte de capture (LOC) dans la fen\u00eatre de mouvement \u00e0 4 temps<\/li><li>la deuxi\u00e8me NP dans une fen\u00eatre mobile de 4 battements est d\u00e9finie comme \u201cNP confirm\u00e9e\u201d (C-LOC)<\/li><li>le seuil est d\u00e9fini comme un \u00e9chelon de tension sup\u00e9rieur \u00e0 celui o\u00f9 se produit le C-LOC<\/li><\/ul><p>\u00a0<\/p><p><strong>R\u00e9glage de la sortie de stimulation RA<\/strong><\/p><ul><li>pas de v\u00e9rification battement par battement de la capture auriculaire<\/li><li>marge de s\u00e9curit\u00e9 : amplitude 2X (non programmable) le plus \u00e9lev\u00e9 des 7 derniers seuils mesur\u00e9s<\/li><li>largeur d'impulsion non programmable : 0,4 ms<\/li><li>amplitude maximale : 5,0 V<\/li><li>amplitude minimale : 2,0 V<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-27f0596 elementor-widget elementor-widget-heading\" data-id=\"27f0596\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Test automatique du seuil ventriculaire (PaceSafe RV Automatic Capture, RVAC)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1b9e779 elementor-widget elementor-widget-text-editor\" data-id=\"1b9e779\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>PaceSafe RV Automatic Capture (RVAC) :<\/strong><\/p><ul><li>Le RVAC est con\u00e7u pour ajuster de mani\u00e8re dynamique la puissance de stimulation du ventricule droit.<\/li><li>la sortie de tension ventriculaire est automatiquement ajust\u00e9e \u00e0 0,5 V au-dessus du seuil mesur\u00e9<\/li><li>v\u00e9rification battement par battement de la capture myocadiale via la d\u00e9tection de la r\u00e9ponse \u00e9voqu\u00e9e ventriculaire<\/li><li>sortie d\u00e9livr\u00e9e d'un minimum de 0,7 V \u00e0 un maximum de 3,5 V<\/li><li>la largeur d'impulsion est non programmable (0,4 ms)<\/li><li>en cas de perte de capture, une impulsion de stimulation de secours est d\u00e9livr\u00e9e<\/li><li>lorsque la perte de capture est confirm\u00e9e pendant deux cycles sur quatre, un test de seuil automatique est lanc\u00e9 pour v\u00e9rifier le nouveau seuil.<\/li><\/ul><p>\u00a0<\/p><p><strong>D\u00e9termination du seuil de stimulation RV<\/strong><\/p><ul><li>un test de seuil automatique est syst\u00e9matiquement effectu\u00e9 toutes les 21 heures<\/li><li>le test commence par une phase d'initialisation (2 intervalles d'\u00e9chauffement pour calibrer l'\u00e9valuation de la mesure de la r\u00e9ponse \u00e9voqu\u00e9e, suivis de 12 intervalles pour lancer les filtres du canal de la r\u00e9ponse \u00e9voqu\u00e9e)<\/li><li>La d\u00e9tection ER (r\u00e9ponse \u00e9voqu\u00e9e) est effectu\u00e9e sur un canal de d\u00e9tection unipolaire d\u00e9di\u00e9.<\/li><li>the ER channel uses lower frequency filters than those of the bipolar sensing channel (3-65 Hz versus 25-85 Hz).<\/li><li>pour \u00e9valuer l'efficacit\u00e9 de la capture, l'amplitude maximale du signal positif est \u00e9valu\u00e9e dans une fen\u00eatre de 10 \u00e0 70 ms apr\u00e8s la stimulation<\/li><li>l'amplitude commence \u00e0 3,5 V et diminue par incr\u00e9ments de 0,1 V<\/li><li>pendant toute la dur\u00e9e de la mesure du seuil, une stimulation de secours (BP) est syst\u00e9matiquement d\u00e9livr\u00e9e apr\u00e8s la premi\u00e8re stimulation ventriculaire (70 ms apr\u00e8s la VP primaire) \u00e0 une amplitude maximale de 3,5 \u00e0 5 V pour \u00e9viter toute pause ventriculaire cons\u00e9cutive \u00e0 une perte de capture.<\/li><li>la tension diminue tous les 3 battements captur\u00e9s<\/li><li>recherche 2 temps de perte de capture (LOC) dans la fen\u00eatre de mouvement \u00e0 4 temps<\/li><li>la deuxi\u00e8me NP dans une fen\u00eatre mobile de 4 battements est d\u00e9finie comme \u201cNP confirm\u00e9e\u201d (C-LOC)<\/li><li>le seuil est d\u00e9fini comme un \u00e9chelon de tension sup\u00e9rieur \u00e0 celui o\u00f9 se produit le C-LOC<\/li><li>Une LOC d'une amplitude &gt; 3,0 V est consid\u00e9r\u00e9e comme un test infructueux.<\/li><li>s'il n'y a pas de capture \u00e0 l'amplitude initiale ou si 0,1 V est atteint sans LOC confirm\u00e9e, le test \u00e9choue.<\/li><li>une EGM est enregistr\u00e9e pour le test de seuil ambulatoire le plus r\u00e9cent<\/li><\/ul><p>\u00a0<\/p><p><strong>R\u00e9glage de la puissance de stimulation RV<\/strong><\/p><ul><li>l'amplitude est automatiquement ajust\u00e9e \u00e0 0,5 V (non programmable) au-dessus du seuil mesur\u00e9<\/li><li>la puissance d\u00e9livr\u00e9e est comprise entre 0,7 et 3,5 V<\/li><li>en cas de LOC, un rythme de secours est d\u00e9livr\u00e9<\/li><li>v\u00e9rification de la capture battement par battement \u00e0 l'aide d'un canal de r\u00e9ponse \u00e9voqu\u00e9e<\/li><li>nouvelle mesure du seuil avec ajustement de l'amplitude d\u00e9livr\u00e9e si la capture est inefficace<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a8c7f8a elementor-widget elementor-widget-heading\" data-id=\"a8c7f8a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Programmation de la sensibilit\u00e9<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-54398a0 elementor-widget elementor-widget-text-editor\" data-id=\"54398a0\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>La fonction de sensibilit\u00e9 peut \u00eatre programm\u00e9e soit pour l'AGC, soit pour la d\u00e9tection fixe. L'appareil poss\u00e8de des circuits AGC ind\u00e9pendants pour chaque chambre et les valeurs de sensibilit\u00e9 auriculaire et ventriculaire sont programmables ind\u00e9pendamment. La s\u00e9lection de la m\u00e9thode de d\u00e9tection AGC applique cette m\u00e9thode \u00e0 toutes les chambres et le type de m\u00e9thode de d\u00e9tection utilis\u00e9 (AGC ou fixe) doit \u00eatre le m\u00eame pour les canaux auriculaires et ventriculaires.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bcb6788 elementor-widget elementor-widget-image\" data-id=\"bcb6788\" data-element_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\/pm_19_situations_detection2.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"pm_19_situations_detection2\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NjYzNywidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNlwvMDFcL3BtXzE5X3NpdHVhdGlvbnNfZGV0ZWN0aW9uMi5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"685\" height=\"378\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/01\/pm_19_situations_detection2.png\" class=\"attachment-large size-large wp-image-6637\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/01\/pm_19_situations_detection2.png 685w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/01\/pm_19_situations_detection2-300x166.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/01\/pm_19_situations_detection2-18x10.png 18w\" sizes=\"(max-width: 685px) 100vw, 685px\" \/>\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-f6996ae elementor-widget elementor-widget-text-editor\" data-id=\"f6996ae\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Sensibilit\u00e9 fixe<\/strong><\/p><p><em>Sensibilit\u00e9 fixe de l'oreillette<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-500db91 elementor-widget elementor-widget-image\" data-id=\"500db91\" data-element_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\/pm_19_situations_detection4.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"pm_19_situations_detection4\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NjY0MCwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNlwvMDFcL3BtXzE5X3NpdHVhdGlvbnNfZGV0ZWN0aW9uNC5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"251\" height=\"169\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/01\/pm_19_situations_detection4.png\" class=\"attachment-large size-large wp-image-6640\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/01\/pm_19_situations_detection4.png 251w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/01\/pm_19_situations_detection4-18x12.png 18w\" sizes=\"(max-width: 251px) 100vw, 251px\" \/>\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-fff545e elementor-widget elementor-widget-text-editor\" data-id=\"fff545e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><em>Sensibilit\u00e9 fixe ventriculaire<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-23520f4 elementor-widget elementor-widget-image\" data-id=\"23520f4\" data-element_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\/pm_19_situations_detection5.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"pm_19_situations_detection5\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NjYzOSwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNlwvMDFcL3BtXzE5X3NpdHVhdGlvbnNfZGV0ZWN0aW9uNS5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"244\" height=\"169\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/01\/pm_19_situations_detection5.png\" class=\"attachment-large size-large wp-image-6639\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/01\/pm_19_situations_detection5.png 244w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/01\/pm_19_situations_detection5-18x12.png 18w\" sizes=\"(max-width: 244px) 100vw, 244px\" \/>\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-88f5cbe elementor-widget elementor-widget-text-editor\" data-id=\"88f5cbe\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Contr\u00f4le automatique du gain<\/strong><\/p><p>Le contr\u00f4le automatique du gain permet d'ajuster dynamiquement la sensibilit\u00e9 dans l'oreillette et le ventricule.<\/p><ul><li>la valeur AGC programmable est la valeur de sensibilit\u00e9 minimale qui peut \u00eatre atteinte entre un battement et le suivant<\/li><li>cette valeur programmable n'est pas une valeur fixe pr\u00e9sente tout au long du cycle cardiaque ; au contraire, le niveau de sensibilit\u00e9 commence \u00e0 une valeur plus \u00e9lev\u00e9e et diminue vers le plancher programm\u00e9<\/li><li>L'AGC atteint g\u00e9n\u00e9ralement le plancher programmable apr\u00e8s la stimulation ou les signaux de faible amplitude.<\/li><li>lorsque des signaux d'amplitude mod\u00e9r\u00e9e ou \u00e9lev\u00e9e sont d\u00e9tect\u00e9s, l'AGC n'atteint g\u00e9n\u00e9ralement pas le plancher programm\u00e9<\/li><\/ul><p>\u00a0<\/p><p>L'AGC de chaque chambre respective traite un signal d'\u00e9lectrogramme via un processus en deux \u00e9tapes afin d'optimiser la d\u00e9tection des signaux cardiaques susceptibles de changer rapidement.<\/p><ul><li>le dispositif ajuste la sensibilit\u00e9 ventriculaire en fonction d'une CAG lente ou rapide<\/li><li>l'AGC applique une composante \u201clente\u201d pour fixer un intervalle \u00e0 la recherche de l'amplitude QRS suivante<\/li><li>en calculant une \u201cmoyenne\u201d des pics des signaux pr\u00e9c\u00e9dents, la composante \u201clente\u201d d\u00e9finit une zone susceptible de contenir le pic suivant, et fixe cette zone entre une valeur minimale et une valeur maximale<\/li><\/ul><p>\u00a0<\/p><p><em>Premi\u00e8re \u00e9tape<\/em><\/p><p>L'AGC utilise une moyenne mobile du pic pr\u00e9c\u00e9dent du signal pour calculer une zone de recherche o\u00f9 le prochain pic se produira probablement avec des limites MAX et MIN.<\/p><ul><li>si le battement pr\u00e9c\u00e9dent est d\u00e9tect\u00e9, il est incorpor\u00e9 dans la moyenne de cr\u00eate glissante<\/li><li>si le battement pr\u00e9c\u00e9dent est rythm\u00e9, la moyenne de cr\u00eate est calcul\u00e9e \u00e0 partir de la moyenne glissante et d'une valeur de cr\u00eate rythm\u00e9e ; la valeur de cr\u00eate rythm\u00e9e d\u00e9pend des r\u00e9glages : pour les r\u00e9glages nominaux ou plus sensibles, il s'agit d'une valeur fixe (valeur initiale de 4,8 mV dans le ventricule, 2,4 mV dans l'oreillette) ; pour les r\u00e9glages moins sensibles, il s'agit d'une valeur plus \u00e9lev\u00e9e calcul\u00e9e \u00e0 partir de la valeur plancher programm\u00e9e de l'AGC<\/li><li>la moyenne des pics est utilis\u00e9e pour d\u00e9limiter une zone avec des limites Min et Max<\/li><\/ul><p>\u00a0<\/p><p><em>Deuxi\u00e8me \u00e9tape<\/em><\/p><p>L'appareil d\u00e9tecte l'amplitude du battement intrins\u00e8que. Une gamme compl\u00e8te d'ondes R et P est disponible jusqu'\u00e0 32 mV.<\/p><ul><li>l'appareil maintient le niveau de sensibilit\u00e9 \u00e0 son maximum pendant la p\u00e9riode r\u00e9fractaire absolue + 15 ms<\/li><li>\u00e0 la fin de la p\u00e9riode r\u00e9fractaire + 15 ms, le r\u00e9glage de la sensibilit\u00e9 passe \u00e0 75% de la cr\u00eate d\u00e9tect\u00e9e ou, si le dernier \u00e9v\u00e9nement ventriculaire est stimul\u00e9, \u00e0 75% de la cr\u00eate moyenne<\/li><li>l'appareil diminue ensuite le r\u00e9glage de la sensibilit\u00e9 toutes les 35 ms pour le ventricule et 25 ms pour l'oreillette, jusqu'\u00e0 7\/8 du r\u00e9glage pr\u00e9c\u00e9dent<\/li><li>Cette descente se poursuit jusqu'\u00e0 ce que le seuil MIN ou le seuil de d\u00e9tection programm\u00e9 soit atteint, selon ce qui est atteint en premier.<\/li><li>apr\u00e8s un rythme, l'AGC descend \u00e9galement \u00e0 7\/8 de la valeur pr\u00e9c\u00e9dente, de sorte que le plancher MIN ou AGC programm\u00e9 soit atteint 150 ms avant le prochain rythme programm\u00e9.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cc863e9 elementor-widget elementor-widget-image\" data-id=\"cc863e9\" data-element_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\/pm_19_situations_detection3.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"pm_19_situations_detection3\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6NjYzOCwidXJsIjoiaHR0cHM6XC9cL2NhcmRpb2Nhc2VzLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNlwvMDFcL3BtXzE5X3NpdHVhdGlvbnNfZGV0ZWN0aW9uMy5wbmcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"629\" height=\"414\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/01\/pm_19_situations_detection3.png\" class=\"attachment-large size-large wp-image-6638\" alt=\"\" srcset=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/01\/pm_19_situations_detection3.png 629w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/01\/pm_19_situations_detection3-300x197.png 300w, https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/01\/pm_19_situations_detection3-18x12.png 18w\" sizes=\"(max-width: 629px) 100vw, 629px\" \/>\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-eaf751f elementor-widget elementor-widget-text-editor\" data-id=\"eaf751f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Param\u00e8tre programmable<\/strong><\/p><p>M\u00e9thode de d\u00e9tection : AGC\/Fixe<\/p><ul><li>l'AGC auriculaire est nominalement de 0,25 mV<\/li><li>L'ACG du ventricule droit est nominalement de 0,6 mV<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Boston Scientific &#8211; Sensing and detection Content Automatic atrial threshold (Right atrial automatic threshold, RAAT) Right atrial automatic threshold (RAAT): required bipolar atrial lead threshold tests are scheduled every 21 hours evaluation of atrial capture is based on the presence of an atrial evoked response amplitude is automatically adjusted to 2X the highest of the [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"parent":51,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-3652","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Boston Scientific ICD Sensing &amp; Detection | Cardiocases<\/title>\n<meta name=\"description\" content=\"Boston Scientific ICD sensing &amp; detection \u2014 sensing parameters, detection zones &amp; ECG tracings. 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