M4 Exam With Correct Answers And Explanation

A 53 year-old known alcoholic presents with agitation, vomiting and altered mental status. His fingerstick glucose is 148. His serum ethanol level is undetectable and his head CT is normal. An ABG shows a pH of 7.21, pCO2 of 34, pO2 of 98 on room air. His basic chemistry panel includes a sodium of 136, potassium 4.1, chloride 108, bicarbonate 14, BUN 12, creatinine 1.1. What substance are you concerned that he may have ingested Answers: 1.Ethylene glycol 2.Salicylates 3.Isopropyl alcohol 4.Methanol {Ans: 3.Isopropyl alcohol}A 65 year old male with a past medical history of poorly controlled hypertension presents with new onset unilateral arm and leg weakness. There is no disturbance of consciousness and there is no evidence of cortical findings (such as aphasia, agnosia, or hemianopsia). What is the most likely location of the vascular obstruction? Answers: 1.anterior cerebral artery 2.middle cerebral artery 3.posterior cerebral artery 4.lacunar 5.basilar artery {Ans: 4.lacunar}A 53 year old man with non-insulin dependent diabetes mellitus presents with pain, redness, and swelling of the right foot and lower leg, accompanied by a temperature of 102. X-rays reveal no subcutaneous gas and show no evidence of osteomyelitis. The patient has been admitted on three