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A 59-year-old man comes to the physician for a follow-up appointment. He has long-standing diabetes. Physical examination shows an S3 heart sound, lateralized apex beat, and peripheral edema. There is …
HY USMLE Q #933 – Hematology See Full Post
A 32-year-old woman comes to the physician for a follow-up appointment. She has no past medical history. Laboratory studies show: Hemoglobin …
HY USMLE Q #932 – Hematology See Full Post
A 4-year-old boy is brought to the physician for a follow-up examination. His neonatal period was complicated by duodenal atresia for which he underwent surgical repair. Which of the following …
HY USMLE Q #931 – Pathology See Full Post
Conjugation, generalized transduction, specialized transduction, and transformation are known as horizontal gene transfer (HGT), which is when genes, especially those conferring antibiotics resistance, can move between bacteria asexually. These processes …
Conjugation, transduction, transformation See Full Post
A 69-year-old man is brought to hospital by his wife for a follow-up appointment. He recently recovered from a cerebral infarction in which the lateral aspect of his left cerebral …
HY USMLE Q #930 – Neuro See Full Post
Sarcoptes scabiei Causes scabies. Presents as itchy bodily areas (e.g., the hands) classically in patients living in close quarters like homeless shelters or group homes. Causes “linear burrows,” although these …
Arthropods See Full Post
A neonate born to a 40-year-old mother via C-section is in respiratory distress. Light microscopy of the alveoli is shown. Which of the following is the most likely explanation for …
HY USMLE Q #929 – Pulmonary See Full Post
Points about pharm: Nematode infections on USMLE are basically always treated with -bendazoles (i.e., mebendazole, albendazole, etc.). These are microtubule inhibitors. Don’t confuse with -azoles (antifungals). Pyrantel pamoate is another …
Helminths See Full Post
A 71-year-old woman is admitted to hospital following a fall. She undergoes replacement of her right hip. 24 hours after surgery, temperature is 100F, HR 110, RR 20, BP 80/50. …
HY USMLE Q #928 – Cardiovascular See Full Post
A 26-year-old man comes to the physician for a 4-day history of foul-smelling stools and bloating. Light microscopy of a stool sample is performed. Which of the following is the …
HY USMLE Q #927 – Gastro / Pharm See Full Post