{"id":13290,"date":"2014-08-04T14:14:42","date_gmt":"2014-08-04T14:14:42","guid":{"rendered":"http:\/\/cardiophile.org\/?p=13290"},"modified":"2022-04-09T10:20:15","modified_gmt":"2022-04-09T04:50:15","slug":"fallot-like-physiology","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/professional\/fallot-like-physiology\/","title":{"rendered":"Fallot like physiology"},"content":{"rendered":"<p><iframe loading=\"lazy\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/pYEEFJEae1Y\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<h2><span style=\"color: #008000;\">Fallot like physiology \u2013 cyanotic congenital heart disease with low pulmonary blood flow<\/span><\/h2>\n<figure id=\"attachment_53467\" aria-describedby=\"caption-attachment-53467\" style=\"width: 1200px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-53467\" src=\"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2014\/08\/Tetralogy-of-Fallot.jpg\" alt=\"Tetralogy of Fallot (Diagrammatic)\" width=\"1200\" height=\"748\" srcset=\"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2014\/08\/Tetralogy-of-Fallot.jpg 1200w, https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2014\/08\/Tetralogy-of-Fallot-300x187.jpg 300w, https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2014\/08\/Tetralogy-of-Fallot-1024x638.jpg 1024w, https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2014\/08\/Tetralogy-of-Fallot-768x479.jpg 768w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><figcaption id=\"caption-attachment-53467\" class=\"wp-caption-text\">Tetralogy of Fallot (Diagrammatic)<\/figcaption><\/figure>\n<p><span style=\"color: #0000ff;\">Basic components of this physiology are a large ventricular septal defect (or single ventricle) and severe pulmonary stenosis so that there is right to left shunt across the VSD and low pulmonary blood flow due to the pulmonary stenosis.<\/span> They can develop hypercyanotic spells and cerebrovascular accidents while they seldom go in for heart failure, unlike the congenital cyanotic heart diseases with increased pulmonary blood flow. Chest X-ray shows pulmonary oligemia and cardiac size is seldom enlarged. The conditions included in this physiology are:<\/p>\n<ol>\n<li>Tetralogy of Fallot<\/li>\n<li>D- Transposition of great arteries (TGA) with ventricular septal defect (VSD) and pulmonary stenosis (PS)<\/li>\n<li>L- TGA with VSD and PS<\/li>\n<li>Tricuspid atresia with VSD and PS<\/li>\n<li>Double outlet right ventricle (DORV) with VSD and PS<\/li>\n<li>Single ventricle with PS<\/li>\n<\/ol>\n<p>Beyond the age of 4 years, 90% of Fallot like physiology will be due to Tetralogy of Fallot. In almost all these conditions, if the pulmonary stenosis is absent, they have high pulmonary blood flow because of the VSD. In fact many cases of Tetralogy of Fallot in later life, may have a phase of increased pulmonary blood flow in early life before the development of right ventricular outflow tract obstruction. This type of conversion is known as <span style=\"color: #0000ff;\">Gasul variant or phenomenon <\/span>[1].<\/p>\n<p><strong><span style=\"color: #0000ff;\">Reference<\/span><\/strong><\/p>\n<ol>\n<li>Gasul BM, Dillon RF, Vrla V, Hait G. <a href=\"https:\/\/www.ncbi.nlm.nih.gov\/pubmed\/13428557\">Ventricular septal defects; their natural transformation into the cyanotic or noncyanotic type of tetralogy of Fallot<\/a>. J Am Med Assoc. 1957 22;164:847-53.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Fallot like physiology \u2013 cyanotic heart disease with low pulmonary blood flow<\/p>\n","protected":false},"author":1,"featured_media":53467,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[9],"tags":[714,738,1021,1024,1445,1568,1569,3875],"class_list":["post-13290","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general","tag-cchd-with-low-pulmonary-blood-flow","tag-chd-with-low-pulmonary-blood-flow","tag-cyanotic-congenital-heart-disease-with-low-pulmonary-blood-flow","tag-cyanotic-heart-disease-with-low-pulmonary-blood-flow","tag-fallot-like-physiology","tag-gasul-phenomenon","tag-gasul-variant","tag-tetralogy-of-fallot-like-physiology"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - 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