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A 3-month-old male born at 37 weeks gestation presents with difficulty feeding for 3 weeks. Physical examination reveals a loud pansystolic murmur most prominent at the left lower sternal border. ECG demonstrates left ventricular hypertrophy. Chest X-ray shows cardiomegaly. During which week of gestation did the failure resulting in this defect likely occur?
a. Week 3
b. Week 4
c. Week 7
d. Week 24
e. Week 28
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Agree VSD but organogenesis cns n cardio starts from 3 week plz correct me if umwrong.
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da ira, organogenisis will begin at 4 weeks & i think , in heart it will end at 8 weeks...so failure to close will be at 7-8 weeks.
Not sure, merely guessing.
@fmg8 what is the answer dude ? or when you will post it ?
Thanks
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The ventricles are a single chamber at about 4 weeks' gestation but by 8 weeks it has been divided in two. Failure of development of any part of the septum results in a defect.
CCC
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oh no, change my answer to c....7 week.....
thanks so much fmg.....really a nice q.....