usmle (USMLE)

What gland is found in the muscular triangle of the neck? - Thyroid gland Is an afferent or efferent pupillary defect described as B/L pupillary constriction when light is shined in the unaffected eye and B/L paradoxical dilation when light is shined in the affected eye? - Afferent pupillary defect (CN II lesion); in an efferent pupillary defect (CN III), B/L constrict when light is shined in the unaffected eye and consentual pupil constriction occurs when light is shined in the affected ey...

A 73-year-old man comes to the office with fatigue that has become progressively worse over the last several months. He is also short of breath when he walks up one flight of stairs. He drinks 4 vodka martinis a day. He complains of numbness and tingling in his feet. On physical examination he has decreased sensation of his feet. His hematocrit is 28% and his MCV is 114 fL (elevated). What is the most appropriate next step in management? A. Vitamin B12 level B. Folate level C. Peripheral...

What are the major functions of the α1 receptor? - Increase vascular smooth muscle contraction, increase pupillary dilator muscle contraction (mydriasis), increase intestinal and bladder sphincter muscle contraction What are the major functions of the α2 receptor? - Decrease sympathetic outflow, decrease insulin release, decrease lipolysis, increase platelet aggregation, decrease aqueous humor production What are the major functions of the β1 receptor? -

What gland is found in the muscular triangle of the neck? - Thyroid gland Is an afferent or efferent pupillary defect described as B/L pupillary constriction when light is shined in the unaffected eye and B/L paradoxical dilation when light is shined in the affected eye? - Afferent pupillary defect (CN II lesion); in an efferent pupillary defect (CN III), B/L constrict when light is shined in the unaffected eye and consentual pupil constriction occurs when light is shined in the affected ey...

Organophosphates Correct Answer: anticholinesterase poisoning Atropine, pralodoxime Correct Answer: anticholinesterase poisoning treatment bethachol Correct Answer: muscarinic direct agonist; post-op ileus, urinary retention carbechol Correct Answer: muscarinic direct agonist; glaucoma pilocarpine Correct Answer: muscarinic direct agonist; stimulates sweat, tears, saliva methacholine Correct Answer: muscarinic direct agonist; asthma diagnositic test neostigmine Correct An...

A 73-year-old man comes to the office with fatigue that has become progressively worse over the last several months. He is also short of breath when he walks up one flight of stairs. He drinks 4 vodka martinis a day. He complains of numbness and tingling in his feet. On physical examination he has decreased sensation of his feet. His hematocrit is 28% and his MCV is 114 fL (elevated). What is the most appropriate next step in management? A. Vitamin B12 level B. Folate level C. Peripheral...

Classic EKG finding in atrial flutter Correct Answer: "Sawtooth" p waves Definition of unstable angina Correct Answer: Angina that is new, is worsening, or occurs at rest Antihypertensive for a diabetic patient with proteinuria Correct Answer: ACEI Beck's triad for cardiac tamponade Correct Answer: Hypotension, distant heart sounds, and JVD Drugs that slow heart rate Correct Answer: Beta-blockers, CCBs, digoxin, amiodarone Hypercholesterolemia treatment that leads to flush...