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Old 08-04-2011
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Default cyanosis with minimal exertion

A 5-year-old child develops cyanosis with minimal exertion. On medical evaluation he is found to have an enlarged right ventricle.which of the following early developmental events most likely underlies his condition:
A. Abnormal neural crest cell migration.
B. Endocardial cushion defects.
C. Aortic arch constriction.
D. Pulmonary hypertension.
E. Abnormal primitive heart tube looping.
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examtaker (08-04-2011), usluipek (08-05-2011)



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Old 08-04-2011
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Quote:
Originally Posted by usmleman2020 View Post
A 5-year-old child develops cyanosis with minimal exertion. On medical evaluation he is found to have an enlarged right ventricle.which of the following early developmental events most likely underlies his condition:
A. Abnormal neural crest cell migration.
B. Endocardial cushion defects.
C. Aortic arch constriction.
D. Pulmonary hypertension.
E. Abnormal primitive heart tube looping.
A. Abnormal neural crest cell migration , TOF
1. RVH
2. overriding of aorta
3. PS
4. VSD
due to neural crest migration defect....
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Old 08-04-2011
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btw, may i know the source of these questions,
i really like the questions u put up.,,and the discussion that follows..
thanx...
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Old 08-05-2011
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A.abnormal neural cell crest migrations
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