Author Question: A patient has developed urticaria following the administration of an oral antibiotic. What substance ... (Read 49 times)

eruditmonkey@yahoo.com · **on:** Jul 23, 2018

A patient has developed urticaria following the administration of an oral antibiotic. What substance most commonly mediates the formation of the wheals that characterize urticaria?

A) Cytokines
B) CD4+ lymphocytes
C) Histamine
D) Interleukin

Question 2

A patient with hypothyroidism is started on levothyroxine (Synthroid). What should the patient be taught regarding medication administration in the home setting?

A) Take medication with milk or food.
B) Do not exercise with the medication.
C) Take the medication on an empty stomach.
D) Levothyroxine has a short half-life.

missalyssa26 · **Reply #1 on:** Jul 23, 2018

Answer to Question 1

C
Feedback:
Histamine is the most common mediator of urticaria; it causes vasodilation, increased vascular permeability, and pruritus. Cytokines, including interleukin, and CD4+ lymphocytes do not usually mediate the development of urticaria.

Answer to Question 2

C
Feedback:
Levothyroxine (Synthroid) should be taken on an empty stomach to increase absorption. The medication should not be taken with food. Exercise has no effect on the administration of the medication. Levothyroxine has a long half-life of about 6 to 7 days.