cardiovascular Questions-1

A medical student working in the emergency
department sees a female baby, born 2 weeks
ago, who is brought in by her anxious mother.
The mother tells the student that her baby
seems “purple,” especially her fi ngers and toes,
and looks extremely blue when crying. On
physical examination the sleeping baby has
mild cyanosis of the face and trunk, but moderate
cyanosis of the extremities. Which of the
following is the most common cause of cyanosis
within the fi rst few weeks of life?
(A) Atrial septal defect
(B) Patent ductus arteriosus
(C) Tetralogy of Fallot
(D) Transposition of the great vessels
(E) Ventricular septal defect

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