Repeated USMLE Questions Step 2 CK- Review- 22

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Q- Which one of the following tests is the best way to monitor cardiovascular changes in a case of Marfan syndrome?

A- Coronary angiography

B- Echocardiogram

C- Electrocardiogram (ECG)

D- Pulmonary function tests

B- Echocardiogram- It is the only one on the above choices that can detect aortic root dilatation or aneurysm formation which are the common cardiac changes in a case of Marfan syndrome.



Q- A mother is positive for hepatitis B surface antigen gives birth recently. Which of the following is the most appropriate next step for the baby?

A- Administration of hepatitis B vaccine

B- Administration of hepatitis B immunoglobulin

C- Administration of both hepatitis B vaccine and immunoglobulin

D- Treatment only if the baby tested positive for hepatitis B surface antigen

C- Administration of both hepatitis B vaccine and immunoglobulin- Transmission of hepatitis B infection to babies of infected mothers is reduced by 95% if both vaccine and immunoglobulin are given early.



Q- Which of the following is the safest sleep position of a month-old-baby to avoid sudden infant death syndrome (SIDS)?

A- On the back

B- On the left side

C- On the right side

D- On the stomach

A- On the back- This is the safest position. On the stomach position is a risk for SIDS. On the side is safe but not as safer as the sleep on the back.



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