{"id":209,"date":"2018-02-06T15:20:12","date_gmt":"2018-02-06T15:20:12","guid":{"rendered":"https:\/\/wp.uthscsa.edu\/ct-surgery\/?page_id=209"},"modified":"2021-11-08T18:49:08","modified_gmt":"2021-11-09T00:49:08","slug":"aortic-stenosis-as-2","status":"publish","type":"page","link":"https:\/\/lsom.uthscsa.edu\/ct-surgery\/patient-care\/congenital-heart\/conditions-we-treat\/aortic-stenosis-as-2\/","title":{"rendered":"Atrial Septal Defect (ASD)"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row][vc_column][vc_column_text]ASDs constitute 8-13% of all congenital heart defects.\u00a0 There are three main types of ASDs.\u00a0 The most common is the\u00a0<em>ostium secundum<\/em>, which arises within the boundaries of the fossa ovalis.\u00a0 A\u00a0<em>primum<\/em>\u00a0ASD results from persistence of the ostium primum and is associated with atrioventricular canal defects.\u00a0 A\u00a0<em>sinus venosus<\/em>\u00a0defect usually occurs high on the septum close to the orifice of the superior vena cava (SVC) and is associated with partial anomalous pulmonary venous connection (PAPVR).\u00a0 A rare type of ASD is the\u00a0<em>coronary sinus<\/em>\u00a0defect, which results from unroofing of the coronary sinus as it courses along the left atrial floor.<\/p>\n<p>Patients with an isolated ASD are usually without symptoms. An echocardiogram is used to define the defect.\u00a0 If performed, cardiac catheterization would show a \u201cstep-up\u201d in oxygen saturation between the SVC and right atrium (RA) due to mixing.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-210 alignleft\" src=\"https:\/\/lsom.uthscsa.edu\/ct-surgery\/wp-content\/uploads\/sites\/32\/2018\/02\/atrial-septal-defect.jpg\" alt=\"\" width=\"465\" height=\"296\" srcset=\"https:\/\/lsom.uthscsa.edu\/ct-surgery\/wp-content\/uploads\/sites\/32\/2018\/02\/atrial-septal-defect.jpg 465w, https:\/\/lsom.uthscsa.edu\/ct-surgery\/wp-content\/uploads\/sites\/32\/2018\/02\/atrial-septal-defect-300x191.jpg 300w\" sizes=\"auto, (max-width: 465px) 100vw, 465px\" \/>In 1952, Drs Lillihei and Lewis performed the first ASD closure, by using cooling blankets to lower the child\u2019s core body temperature to temporarily stop the heart. The surgery had to be completed in under ten minutes.<\/p>\n<p>Today we have the luxury of the cardiopulmonary bypass machine, and can attempt more complex repairs. Closure is indicated for all significant ASDs (Qp:Qs\u00a0<u>&gt;<\/u>1.5) and should be performed by 4-5 years of age to prevent pulmonary vascular disease.\u00a0 Contraindications to closure include small, hemodynamically insignificant ASDs without cardiomegaly, severe LV failure, and irreversible pulmonary.<\/p>\n<p>Device closure at catheterization has become increasingly popular while surgical closure primarily or with a patch (\u2018tanned\u2019 or treated pericardium) can be accomplished with low morbidity.[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column][vc_column_text]ASDs constitute 8-13% of all congenital heart defects.\u00a0 There are three main types of ASDs.\u00a0 The most common is the\u00a0ostium secundum, which arises within the boundaries of the fossa ovalis.\u00a0 A\u00a0primum\u00a0ASD results from persistence of the ostium primum and is associated with atrioventricular canal defects.\u00a0 A\u00a0sinus venosus\u00a0defect usually occurs high on the septum close to [&hellip;]<\/p>\n","protected":false},"author":161,"featured_media":0,"parent":1337,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-209","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - 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