1. A 34-year-old wom an underwent m agnetic resonance im aging (MRI) to investigate an acoustic neurinom a. Because the wom an had had a m ild allergic reaction to contrast m edia in the past, she was...

1. A 34-year-old wom an underwent m agnetic resonance im aging (MRI) to investigate an acoustic neurinom a. Because the wom an had had a m ild allergic reaction to contrast m edia in the past, she was given a prescription for drugs to be taken before the MRI. Which of the follow ing drugs should be included in that prescription? A. Fludrocortisone B. Fam otidine C. Za rlukast D. Diphenhydram ine E. Ondansetron F. Brom ocriptine 2. A 30-year-old prim ipara wom an had visible vaginal bleeding w ithin a few hours after delivering her baby. Uterine m assage and infusion of oxytocin did not control the bleeding. Upon exam ination, it was felt that the hem orrhage was due to uterine atony. An intram uscular injection of ergonovine was given. Which of the follow ing actions m ost likely m ediated the therapeutic e ect of the drug in this patient? A. Selective constriction of uterine arteries B. Endothelin release in the uterine vascular bed C. Platelet aggregation in the uterine vascular bed D. Activation of coagulation cascade in uterine capillaries E. Induction of powerful uterine contracture