{"id":23,"date":"2009-02-22T21:41:28","date_gmt":"2009-02-22T21:41:28","guid":{"rendered":"https:\/\/medicalcriteria.com\/web\/caratrial\/"},"modified":"2025-05-14T21:04:47","modified_gmt":"2025-05-14T21:04:47","slug":"caratrial","status":"publish","type":"post","link":"https:\/\/medicalcriteria.com\/web\/caratrial\/","title":{"rendered":"Common Diagnostic Criteria for Left and Right Atrial Abnormalities"},"content":{"rendered":"<div class=\"99c380e4b4a7b96c35d7ddf7dcb434e8\" data-index=\"1\" style=\"float: none; margin:0px 0 0px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<!-- MC 2019- Horizontal -->\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block\"\r\n     data-ad-client=\"ca-pub-0127150553352455\"\r\n     data-ad-slot=\"3806776041\"\r\n     data-ad-format=\"auto\"\r\n     data-full-width-responsive=\"true\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n<p><strong>Left Atrial Abnormality<\/strong><\/p>\n<ul>\n<li>Prolonged P wave duration of &gt;120 msec in lead II<\/li>\n<li>Prominent notching of the P wave, usually most obvious in lead II, with an interval between the notches of &gt;40 msec (p mitrale)<\/li>\n<li>Ratio between the duration of the P wave in lead II and the duration of the PR segment of &gt;1.6<\/li>\n<li>Increased duration and depth of the terminal negative portion of the P wave in lead V1 (the P terminal force) so that the area subtended by it exceeds 0.04 mm-sec (Morris index)<\/li>\n<li>Leftward shift of the mean P wave axis to between -30 and +45 degrees <!--more--><\/li>\n<\/ul>\n<p><strong>Right Atrial Abnormality<\/strong><\/p>\n<ul>\n<li>Peaked P waves with amplitudes over 250 muV in lead II (p pulmonale)<\/li>\n<li>Rightward shift of the mean P wave axis to above 75 degrees<\/li>\n<li>Increased area under the initial positive portion of the P wave in lead V1 to &gt;0.06 mm-sec<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><strong>References:<\/strong><\/p>\n<ol>\n<li>Edhouse J, Thakur RK, Khalil JM. ABC of clinical electrocardiography. Conditions affecting the left side of the heart. BMJ. 2002 May 25;324(7348):1264-7.\u00a0<a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/12028984\/\" target=\"_blank\" rel=\"noopener\">[Medline]<\/a><\/li>\n<li>Harrigan RA, Jones K. ABC of clinical electrocardiography. Conditions affecting the right side of the heart. BMJ. 2002 May 18;324(7347):1201-4.\u00a0<a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/12016190\/\" target=\"_blank\" rel=\"noopener\">[Medline]<\/a><\/li>\n<\/ol>\n<p>&nbsp;<\/p>\n<p>Created: Jan 04, 2006<\/p>\n\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Sorry, this entry is only available in Espa\u00f1ol.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"no","_lmt_disable":"no","_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[26],"tags":[1915,1914,1913,1348,296,295,16,15,124,14,13,1476,1475,122],"class_list":["post-23","post","type-post","status-publish","format-standard","hentry","category-cardiology","tag-abnormalities","tag-anormalidades","tag-atrial","tag-cardiology","tag-common","tag-comun","tag-criteria","tag-criterios","tag-derecha","tag-diagnostic","tag-diagnostico","tag-izquierda","tag-left","tag-right"],"modified_by":"Guillermo Firman","_links":{"self":[{"href":"https:\/\/medicalcriteria.com\/web\/wp-json\/wp\/v2\/posts\/23","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/medicalcriteria.com\/web\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/medicalcriteria.com\/web\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/medicalcriteria.com\/web\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/medicalcriteria.com\/web\/wp-json\/wp\/v2\/comments?post=23"}],"version-history":[{"count":2,"href":"https:\/\/medicalcriteria.com\/web\/wp-json\/wp\/v2\/posts\/23\/revisions"}],"predecessor-version":[{"id":9025,"href":"https:\/\/medicalcriteria.com\/web\/wp-json\/wp\/v2\/posts\/23\/revisions\/9025"}],"wp:attachment":[{"href":"https:\/\/medicalcriteria.com\/web\/wp-json\/wp\/v2\/media?parent=23"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/medicalcriteria.com\/web\/wp-json\/wp\/v2\/categories?post=23"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/medicalcriteria.com\/web\/wp-json\/wp\/v2\/tags?post=23"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}