Congenital TEE Flashcards
Learn TEE for congenital heart disease
What is a Gerbode defect?
When a perimembranous ventricular septal defect (VSD) forms a communication between the left ventricular outflow tract and the right atrium.
Define Type III Truncus Arteriosus.
In Type III truncus arteriosus, there is a single pulmonary artery arising from the lateral wall of the truncus, and the blood supply to the other lung is from either the base of the aortic arch or the systemic arteries.
What percentage of atrial septal defects (ASDs) are sinus venosous defects?
10%
What syndrome is found in 10% to 15% of patients with Ebsteins anomaly?
Wolff-Parkinson-White
What percentage of ventricular septal defects (VSDs) are perimembranous?
70%
What are the four categories of ventricular septal defects?
(1) Perimembranous,
(2) Muscular,
(3) Supracristal,
(4) Atrioventricular canal defects
What is thought to be the cause of Truncus Arteriosus?
Incomplete or failed septation of the distal conus, truncus arteriosus, and the aortic sac.
List right ventricular morphologic features.
- Heavily trabeculated
- Three papillary muscles
- Moderator band
- Tricuspid valve has chordal attachments to the ventricular septum
- Tricuspid valve has 3 leaflets
- Tricuspid valve has a more apical (distal) septal insertion
What percentage of patients with mild pulmonary stenosis will require valvulotomy?
5%
Which TEE view is most useful when differentiating a perimembranous VSD from a supracristal VSD
RV inflow-outflow view
Which TEE view demonstrates an over-riding aorta in Tetralogy of Fallot
Mid-esophageal long axis (ME Lax)
List left ventricular morphologic features.
- Smooth walls
- Two papillary muscles
- No moderator band
- The mitral valve does not have a chordal attachment to the ventricular septum.
- The mitral valve has two leaflets
- The mitral valve has a more basilar (higher) septal insertion.
Severe pulmonic stenosis is defined as a peak gradient greater then ______?
50 mm Hg
In the RV inflow-outflow view, a perimembranous VSD is close to which valve?
Tricuspid valve
In the RV inflow-outflow view, a supracristal VSD is close to which valve?
Pulmonary (pulmonic) valve and right ventricular outflow tract (RVOT)
What percentage of patients with moderate pulmonic stenosis will require intervention?
20%
What is the percentage of probe-patent foramen ovale in autopsy series?
26%
What is the embryologic cause of a patent foramen ovale (PFO)?
Failure of the septum primum and septum secundum to fuse after birth.