Atrial Septal Defects Flashcards
Prevalence of ASD
0.88 per 1000 Adults
Most common type of ASD which is a true deficiency in the atrial septum, in the region of fossa ovalis
Secundum ASD
PFO persists in up to ____% of adults
25%
Associated with cleft in mitral valve
Primum ASD
Usually involve anomalous right-sided pulmonary venous return
Sinus Venosus
the right-sided pulmonary veins connect to the inferior vena cava (IVC)
Scimitar Vein
Supraventricular arrhythmias develop by 40 years of age in about ____ % of patients and become increasingly preva-lent with advancing age.
10%
The classic physical examination of an ASD is a ___________________, which is due to prolonged RV ejection and increased PA capacitance, which, in turn, delay pulmonary valve closure.
wide, fixed split-ting of the second heart sound
Negative P waves in the inferior leads indicate a low atrial pacemaker often seen in ____________ defects
superior sinus venosus
CXR finding seen in Scimitar Syndrome
hypoplasia of the right hemithorax
Represents the course of the right-sided pulmonary veins.
Scimitar Sign
“Turkish Sword Sign”
Device closure is available only for patients with a secundum ASD with a stretched diameter of less than ________ mm and with adequate rims (> ________ mm) to enable secure deployment of the device.
36 to 40mm, > 5mm