{"id":11149,"date":"2026-07-02T10:22:33","date_gmt":"2026-07-02T10:22:33","guid":{"rendered":"https:\/\/cardiocases.com\/?post_type=ecg_case&#038;p=11149"},"modified":"2026-07-02T11:33:43","modified_gmt":"2026-07-02T11:33:43","slug":"trace-4-10-pacemaker-mediated-tachycardia","status":"publish","type":"ecg_case","link":"https:\/\/cardiocases.com\/fr\/ecg_case\/trace-4-10-pacemaker-mediated-tachycardia\/","title":{"rendered":"Trace 4.10: Pacemaker mediated tachycardia"},"content":{"rendered":"","protected":false},"featured_media":9678,"template":"","ecg_case_type":[253],"language_ecgcase":[258],"class_list":["post-11149","ecg_case","type-ecg_case","status-publish","has-post-thumbnail","hentry","ecg_case_type-cardiac-pacing","language_ecgcase-english"],"acf":{"ecg_case_title":"Trace 4.10: Pacemaker mediated tachycardia","patient_description":"Same patient as in the previous trace; programming of the algorithm for terminating pacemaker mediated tachycardias","quiz_question":"Regarding this ECG, which of the following is\/are the correct answer(s)?","quiz_answer_1":"The QRS complexes are intrinsic","quiz_answer_2":"The QRS complexes are paced","quiz_answer_3":"This is ventricular tachycardia","quiz_answer_4":"This is atrial flutter 2:1 conducted","quiz_answer_5":"This is a pacemaker mediated tachycardia that stops and restarts.","correct_answer":["B","E"],"ecg_image":9678,"ecg_description":"This is the same tachycardia as in the previous trace (PMT); it stops for one cycle and resumes on the next cycle;","ecg_info_box":"Management of PMTs involves programming a specific termination algorithm, setting a PVARP longer than the retrograde conduction time (which can sometimes be difficult because it limits the ability to monitor atrial activity in 1:1 rhythm during exercise), and the prevention of episodes by eliminating triggering factors (stimulation or detection failures, false detections, etc.).","commentary_ecg":"-","ecg_info_post_answer":"&nbsp;\r\n\r\n<img class=\"alignnone wp-image-10423 size-full\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/04\/trace-4-10-ecg2.png\" alt=\"\" width=\"877\" height=\"783\" \/>\r\n<strong>Trace description\u00a0<\/strong>\r\n\r\nAnalysis of the EGM allows for a diagnosis; initially, a PMT is detected; programming of the PMT termination algorithm (programming successful); the device diagnoses a PMT after 8 consecutive VP-AS cycles; the PMT termination algorithm is triggered, extending the post-ventricular atrial refractory period to 400 ms for one cycle; atrial activity is detected during the post-ventricular atrial refractory period (PVARP) and does not synchronize with ventricular pacing; the subsequent atrial pacing is ineffective, promoting retrograde conduction, and the tachycardia restarts;\r\n\r\n&nbsp;\r\n\r\n<img class=\"alignnone wp-image-10424 size-large\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/04\/trace-4-10-ecg3-1024x786.png\" alt=\"\" width=\"800\" height=\"614\" \/>\r\n\r\n<strong>Trace description<\/strong>\r\n\r\nEGM trace showing the interruption of the PMT;\r\n\r\n&nbsp;\r\n\r\n<img class=\"alignnone wp-image-10425 size-large\" src=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/04\/trace-4-10-ecg4-scaled-e1775145156752-1024x596.jpeg\" alt=\"\" width=\"800\" height=\"466\" \/>\r\n\r\n<strong>Trace description<\/strong>\r\n\r\nECG showing the interruption of the PMT;\r\n\r\n&nbsp;"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Trace 4.10: Pacemaker mediated tachycardia - Cardiocases<\/title>\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\/ecg_case\/trace-4-10-pacemaker-mediated-tachycardia\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Trace 4.10: Pacemaker mediated tachycardia - Cardiocases\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cardiocases.com\/fr\/ecg_case\/trace-4-10-pacemaker-mediated-tachycardia\/\" \/>\n<meta property=\"og:site_name\" content=\"Cardiocases\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-02T11:33:43+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cardiocases.com\/wp-content\/uploads\/2026\/03\/trace-4-10-ecg-scaled-e1782936736341.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1507\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/cardiocases.com\\\/ecg_case\\\/trace-4-10-pacemaker-mediated-tachycardia\\\/\",\"url\":\"https:\\\/\\\/cardiocases.com\\\/ecg_case\\\/trace-4-10-pacemaker-mediated-tachycardia\\\/\",\"name\":\"Trace 4.10: Pacemaker mediated tachycardia - Cardiocases\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/cardiocases.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/cardiocases.com\\\/ecg_case\\\/trace-4-10-pacemaker-mediated-tachycardia\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/cardiocases.com\\\/ecg_case\\\/trace-4-10-pacemaker-mediated-tachycardia\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/cardiocases.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/trace-4-10-ecg-scaled-e1782936736341.jpeg\",\"datePublished\":\"2026-07-02T10:22:33+00:00\",\"dateModified\":\"2026-07-02T11:33:43+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/cardiocases.com\\\/ecg_case\\\/trace-4-10-pacemaker-mediated-tachycardia\\\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/cardiocases.com\\\/ecg_case\\\/trace-4-10-pacemaker-mediated-tachycardia\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/cardiocases.com\\\/ecg_case\\\/trace-4-10-pacemaker-mediated-tachycardia\\\/#primaryimage\",\"url\":\"https:\\\/\\\/cardiocases.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/trace-4-10-ecg-scaled-e1782936736341.jpeg\",\"contentUrl\":\"https:\\\/\\\/cardiocases.com\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/trace-4-10-ecg-scaled-e1782936736341.jpeg\",\"width\":2560,\"height\":1507},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/cardiocases.com\\\/ecg_case\\\/trace-4-10-pacemaker-mediated-tachycardia\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/cardiocases.com\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Trace 4.10: Pacemaker mediated tachycardia\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/cardiocases.com\\\/#website\",\"url\":\"https:\\\/\\\/cardiocases.com\\\/\",\"name\":\"Cardiocases\",\"description\":\"Real cardiac device traces, pacemaker &amp; 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