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que8 - nishi
#1
A 2-month-old male is brought to the pediatrician
by his mother who is concerned that he is
not gaining weight. She also notes that his
color is poor, especially when he tries to feed,
when he often grunts and turns dusky. Which
of the following cardiac lesions is most likely
to cause the patientâ„¢s symptoms?
(A) Atrial septal defect
(B) Patent ductus arteriosus
© Patent foramen ovale
(D) Tetralogy of Fallot
(E) Ventricular septal defect
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#2
d??
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#3
AA???
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#4
DDDDDDDD
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#5
Whats its answer nishi?????
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#6
DDDDDDD R -> L shunt
TOF
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#7
(D) is correct. The Tetralogy of Fallot is the most
common cause of cyanotic heart disease in which
blood bypasses the lungs and mixes with oxygenated
blood. Four lesions comprise the Tetralogy of Fallot:
origin of the aorta is the right ventricle, pulmonary
artery stenosis, ventricular septal defect, right
ventricular hypertrophy. As much as 75% of venous
return to the heart is passed, unoxygenated, from the
right ventricle to the aorta and the systemic circulation,
resulting in cyanosis.
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