Answer to Question 1
B
Feedback:
Clopidogrel is used to inhibit platelet aggregation, decreasing the formation of clots in narrowed or injured blood vessels like those found in peripheral artery disease. Maintaining the patency of grafts or preventing emboli from valve replacements would be accomplished using an anticoagulant. Dissolving emboli would be accomplished using streptokinase or a similar enzyme to stimulate the conversion of plasminogen to plasmin.
Answer to Question 2
C
Feedback:
Ultralente has a duration of 20 to 36 hours and a peak time of 10 to 30 hours. This would prevent him having to administer insulin on the airplane. Lispro has a duration of 2 to 5 hours and a peak time of 30 to 90 minutes. Glulisine has a duration of 1 to 2.5 hours and a peak time of 30 to 90 minutes. Aspart has a duration of 3 to 5 hours and a peak time of 1 to 3 hours. The last three insulin types mentioned in this Rationale would likely require administration on long plane flights.