USMLE Review- 4



Q- Which of the following is the target LDL in a patient with diabetes?

A- Less than 70

B- 70-100

C- 100-130

D- More than 130

A- Less than 70- This is the bad cholesterol. The higher the level of LDL, the higher is the risk of coronary heart disease and stroke.



Q- Erythema infectiosum (Fifth disease) is caused by which of the following organism?

A- Coxsackie A virus

B- Paramyxovirus

C- Parvovirus B19

D- Rubella virus

C- Parvovirus B19- This disease is characterized by “slapped-check” erythematous rash and rashes on the arms, trunk and legs that worsen with fever, hot weather and exposure to sun.



Q- Which of the following differentiates physiologic jaundice from pathologic jaundice?

A- Bilirubin in physiologic jaundice rises higher than 5 mg/dL/day

B- Bilirubin peaks at higher levels (> 15 mg/dL)  in physiologic jaundice

C- Direct bilirubin is lower than 10% of total bilirubin in physiologic jaundice

D- Physiologic jaundice is present in the first 24 hours of life

C- Direct bilirubin is lower than 10% of total bilirubin in physiologic jaundice- Physiologic jaundice is not present until 72 hours after birth. It resolves one week after onset in term infants and 2 weeks in premature infants.



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