NBME challenge Q6 - rsvr

[ArchivalUser]

A previously healthy 56-year-old man has the sudden onset of severe headaches that become worse in the afternoons. His blood pressure is 180/110 mm Hg Renal arteriography shows 85% occlusion of the rightrenal artery The laboratory finding that best predicts whether an operation that relieves the obstruction will reduce the blood pressure to normal is increased renin activity in the
o A) left renal artery vs right renal artery
o B) left renal vein vs right renal vein
o C) right renal artery vs left renal artery
o D) right renal vein vs left renal vein

can someone explain this please

[ArchivalUser]

i think its C, but i am nt sure. its quite confusing

[ArchivalUser]

its D,
this man has HTN secondary to decrease in renal flow,==>b/c right renal art stenosed==>decreased perfusion pressure in right kidney===>trigger MD(JG cells)--->secrete renin(notice its in rt side vein)----->answer D

[ArchivalUser]

good job shiney. i am totaly lost in this q.

[ArchivalUser]

thanks D is the ans