prathapdoctor
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A term male infant is found to be cyanotic shortly after birth and requires endotracheal intubation. On physical examination, his blood pressure is 68/34 mm Hg (equal in all four extremities), pulse is 180/min, and respirations are 32/min. His precordium is dynamic, has a grade III systolic murmur, and a single S2.
Chest radiography shows a normal heart size and increased pulmonary vascular markings. An arterial blood gas on an FiO2 of 100% shows pH 7.34; PaCO2, 47 mm Hg; PaO2, 46 mm Hg. Which of the following diagnoses is most consistent with these findings?
a)Atrial septal defect
b)Hypoplastic left heart syndrome
c)Patent ductus arteriosus
d)Tetralogy of Fallot
e) Total anomalous pulmonary venous return
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| robin082006
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BB
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The Key to Succeed is Patience.
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| sarika
Forum Guru
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ASD and PDa is out, tetralogy appears in childhood not right after birth
that leaves us with b)Hypoplastic left heart syndrome and TAPVR.
i think its TAPVR
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| prathapdoctor
Forum Elite
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the answer is TAPVR
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| webjeee
Forum Guru
Topics: 99
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sarika,
I hate cardiology. not good at it at all.
How can you rule out ASD and PDA so quickly?
Would you please tell me how to deal with these questions? ASD, S2 wide split and fixed? PDA, machine like. what is the most important handle? what's your approches?
Thanks.
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| MRMAVERICK
Forum Guru
Topics: 40
Posts: 715
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ASD AND PDA CAUSE LEFT TO RIGHT SHUNTING OF BLOOD AND WUD NT CAUSE HYPOXEMIA UNLESS EISENMENGER DEVELOPS TAKIND SOME YEARS-ASD HAS FIXED SPLITTING OF HEART SOUND 2 AND PDA WOULD HAVE CAUSED MACHINERY MURMUR-THIS IS WHAT I CAN TELL FROM MY STEP 1 KNOWLEGE
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