USMLE Step1のBiochemistry生化学関連ではどのような問題がでるのか?
以下の問題はUSMLE公式ページ(https://www.usmle.org/)で公開されている2020サンプル問題から2問引用した。
“5. A 55-year-old man is brought to the emergency department because of shortness of breath and confusion for
4 hours. He has hypertension and chronic kidney disease requiring hemodialysis. An ECG shows low voltage with
electrical alternans. Physical examination is most likely to show which of the following findings?
Blood Pressure Jugular Venous Pulsus
(mm Hg) Pulse (/min) Pressure Paradoxus
(A) 85/60 120 increased increased
(B) 85/60 120 increased normal
(C) 85/60 120 normal normal
(D) 120/80 80 increased increased
(E) 120/80 80 normal increased
(F) 120/80 80 normal normal”
“7. An asymptomatic 44-year-old man is found to have HIV infection during routine screening prior to donating blood.
A complete blood count done at the time of the screening shows:
Hemoglobin 10 g/dL
Hematocrit 30%
Leukocyte count 4600/mm3
Platelet count 15,000/mm3
Prothrombin time 12 sec (INR=1.1)
Partial thromboplastin time 23 sec
Which of the following physical findings is most likely in this patient?
(A) Deep venous thrombosis
(B) Hemarthrosis
(C) Petechiae
(D) Subungual hemorrhage
(E) Visceral hematoma ”