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Congenital Defects
Cardiac Fall
| Question | Answer |
|---|---|
| IAS | interatrial septum |
| IVS | interventricular septum |
| AVS | atrioventricular septum |
| What are the 4 IVS components? | Membranous septum, inlet/AV canal septum, trabecular/muscular septum, outlet/infundibular/distal conal septum |
| Where does the membranous septum lie? | between the anterior & septal TV leaflets and below the right & non-coronary cusps of the aortic valve |
| Where does inlet septum lie? | inflow areas of both TV & MV |
| Where does the outlet septum lie? | separates the LVOT from the RVOT |
| Where does AVS lie? | separates RA from LV |
| How do TV & MV attach to AVS? | TV attaches more inferiorly than MV |
| What are the 2 types of AVSDs? | complete & partial |
| What are the 4 types of ASDs? | ostium secundum, ostium primum, sinus venosus, & coronary sinus |
| Which is the most common type of ASD? | ostium secundum |
| Where is ostium secundum ASD located? | mid portion of IAS |
| Where is ostium primum ASD located? | inferior portion of IAS (near MV & TV) |
| Where is sinus venosus ASD located? | superior portion of IAS? |
| What does coronary sinus ASD/unroofed coronary sinus allow? | communication between coronary sinus & LA |
| What are 4 types of VSDs? | Membranous/perimembranous septum, inlet septum, trabecular/muscular septum, & outlet/supracristal septum |
| What is the most common VSD? | membranous/perimembranous |
| What are perimembranous ventricular septal defects associated with? | pouches or aneurysms |
| What are locations for muscular VSDs? | central muscular, mid-muscular, apical, or marginal |
| Where do inlet VSDs lie? | posterior to the septal leaflet of the TV |
| What are inlet VSDs associated with? | cleft or common AV valves |
| Where do outlet VSDs lie? | beneath the pulmonic valve |
| What are outlet VSD's associated with? | aortic regurgitation secondary to prolapse of the RCC |
| What are outlet VSDs also known as? | supracristal, conal septal, infundibular, subpulmonic, & subarterial |
| AVSDs are also known as? | atrioventricular canal defects or endocardial cushion defects |
| Where are TV & MV attached in AVSDs? | at the same level |
| What is the difference between a complete & partial AVSD? | in complete, the AVS is absent & one large atrioventricular valve exists; partial has 2 separate valve orifices |
| Congenital aortic stenosis | obstruction of the valve itself, either above or below; abnormal number of cusps, stiff or fused cusps; leads to left ventricular hypertrophy |
| Aortic Atresia/Bicuspid/Quadricuspid Aortic Valve | Aortic valve absent or closes; associated with Hypoplastic left heart syndrome |
| Congenital pulmonic stenosis | obstruction of the valve itself, either above or below; abnormal number of cusps, stiff or fused cusps; leads to right ventricular hypertrophy |
| Pulmonary atresia | pulmonary valve absent or closed;associated with VSD |
| Cleft Mitral Valve | associated with ostium secundum ASD |
| Mitral Valve atresia | MV absent or closed; associated with hypoplastic left heart syndrome |
| Double Orifice Mitral Valve (DOMV) | mitral valve has two orifices; most commonly associated with AVSD |
| Ebstein's Anomoly | enlarged RA |
| Tricuspid Valve Atresia | TV absent or closed & underdeveloped RV |
| Patent Ductus Arteriosus | Ductus arteriosus remains open |
| Coarctation of the aorta | narrowing of the aorta |
| Tetralogy of Fallot | perimembranous VSD, overriding aorta, pulmonic stenosis, & right ventricular hypertrophy |
| Transposition of Great Arteries | aorta & MPA switch position |
| Persistent Truncus Arteriosus | only one great vessel with one semilunar valve that can have 2-6 cusps |
| Cor Triatratum | three atrial chambers |
| A persistent left SVC drain to and cause? | coronary sinus & causes an unroofed coronary sinus |
| Patent Foramen Ovale | foramen ovale remains open |
| In a PSAX view, what does the time "9-12" show? | membranous VSD |
| In a PSAX view, what does the time "12-3" show? | outlet VSD |
| Eisenmenger's syndrome | defects that cause left to right blood flow |
| bicuspid aortic valve is highly related to what? | coarctation of the aorta |
| raphe | fused valves |
| What is a cleft MV highly related to? | endocardial cushion defects |