{"id":235,"date":"2008-10-05T06:37:57","date_gmt":"2008-10-05T06:37:57","guid":{"rendered":"http:\/\/cardiophile.org\/2008\/10\/ecg-quiz-9.html"},"modified":"2024-01-29T05:23:05","modified_gmt":"2024-01-28T23:53:05","slug":"ecg-quiz-9","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/professional\/ecg-quiz-9\/","title":{"rendered":"Old inferior wall myocardial infarction"},"content":{"rendered":"<p><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/vTcIF2Mu25c?si=GDKMBNOap8Ypt-kd\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe><\/p>\n<h2><span style=\"color: #008000;\">ECG Quiz 9<\/span><\/h2>\n<figure id=\"attachment_38240\" aria-describedby=\"caption-attachment-38240\" style=\"width: 2081px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-38240\" src=\"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2008\/10\/Old-inferior-wall-myocardial-infarction.png\" alt=\"Old inferior wall myocardial infarction\" width=\"2081\" height=\"675\" \/><figcaption id=\"caption-attachment-38240\" class=\"wp-caption-text\">Old inferior wall myocardial infarction<\/figcaption><\/figure>\n<p>ECG shows old inferior wall infarction as evidenced by pathological Q waves in inferior leads II, III and aVF. Q waves are considered pathological if they are at least 40 msec wide and when the amplitude is more than 25 % of the ensuing R wave, former being more specific. Pathological Q waves can be seen in myocardial infarction and hypertrophic cardiomyopathy. Narrow deep Q waves in the lateral leads are seen in left ventricular volume overload. The Q waves in inferior wall infarction may disappear as time passes so that the ECG may become near normal months or years after an inferior wall infarction. This is more likely when the size of the infarct is smaller. It is less likely to occur in anterior wall infarction, though not unknown. The T wave inversions may also disappear as time passes.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>ECG Quiz 9<\/p>\n","protected":false},"author":1,"featured_media":38240,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[6,7],"tags":[2670],"class_list":["post-235","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ecg-electrophysiology","category-ecg-library","tag-old-inferior-wall-myocardial-infarction"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ECG Quiz 9<\/title>\n<meta name=\"description\" content=\"ECG Quiz 9\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/johnsonfrancis.org\/professional\/ecg-quiz-9\/\" \/>\n<meta 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