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An 8-year-old girl has a history of recurrent upper respiratory tract infections since birth. For the past two months, she has reported decreased sensation of the feet bilaterally. Serum LDH …
HY USMLE Q #831 – Pulmonary See Full Post
An 82-year-old woman is brought to the physician by her adult son for a follow-up examination. She has been on a tea and toast diet for the past 6 months …
HY USMLE Q #826 – Biochemistry See Full Post
A 59-year-old woman comes to the physician for a follow-up examination. Biopsy specimen is shown. Which of the following combinations of findings is most likely in this patient? ↑ …
HY USMLE Q #823 – Biochemistry See Full Post
A 12-hour-old male newborn is born at term to a 28-year-old mother with type I diabetes mellitus. His serum glucose is 30 mg/dL. Which of the following is most likely …
HY USMLE Q #814 – Biochemistry See Full Post
A 45-year-old man comes to the physician in January for a health maintenance examination. He reports a 4-month history of fatigue and mild depression. Vitals are normal. Laboratory studies show: …
HY USMLE Q #767 – Acid/base See Full Post
A 41-year-old woman consumes a large meal as part of a research study on hormone and enzyme activities. In comparison to prior to meal consumption, which of the following combinations …
HY USMLE Q #755 – Biochemistry See Full Post
A 6-year-old boy is brought to the physician by his mother for a 2-day history of yellow discoloration of his eyes. Hemoglobin is 13 mg/dL. Serum LDH is elevated. A …
HY USMLE Q #744 – Heme See Full Post
A 62-year-old man comes to the physician for a 6-month history of fatigue. Colonoscopy reveals a tumorigenic lesion. Biopsy and molecular analysis shows lack of GTPase activity of G-α-s G-proteins. …
HY USMLE Q #726 – Biochemistry See Full Post
A 64-year-old man comes to the physician for a 4-month history of loose stools and swelling of his ankles. He drinks a pint of vodka daily. Laboratory studies show an …
HY USMLE Q #694 – Electrolytes See Full Post
A 61-year-old man comes to the physician for a routine health maintenance examination. He has smoked two packs of cigarettes daily for 40 years. Cardiopulmonary examination shows a loud P2 …
HY USMLE Q #662 – Acid/Base See Full Post