Which of the following is not seen in
patent ductus arteriosus?
a) Left atrial hypertrophy
b) Left ventricular enlargement
c) Continuous murmur
d) Attenuated SI
Correct Answer - D
Answer- D. Attenuated SI
Increased flow after passing through lung reaches the left atrium and
causes volume overload → Left atrial dilatation and hypertrophy.
Increased blood volume passes from left atrium to left ventricle
through mitral valve, i.e., increased flow through mitral
valve → Accentuation of S1 and delayed diastolic murmur.
Left ventricle receives larger amount of blood that results in volume
overload → Left ventricle enlargement.