A 6-month-old female infant is found to have a heart murmur at the routine six-month check. She has previously been healthy apart from infantile colic

Subject
Paediatrics
System
Cardiology & Vascular System

Kathryn

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Jul 29, 2020
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A 6-month-old female infant is found to have a heart murmur at the routine six-month check. She has previously been healthy apart from infantile colic. Her weight is on the 25th percentile, height is on the 10th percentile, she is not cyanosed, has no chest deformity and her peripheral pulses are normal. There is a palpable thrill at the left sternal edge. The apex beat is palpable in the fifth intercostal space on the midclavicular line. She has a grade 4/6 systolic cardiac murmur audible maximally at the left sternal edge, radiating to the left axilla and into the back. There is no variation with respiration or posture change. Which one of the following is the most likely diagnosis?
(A) Fallot tetralogy
(B) Mitral stenosis
(C) Atrial septal defect (ASD)
(D) Ventricular septal defect (VSD)
(E) Benign flow murmur
 
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