Final answer:
Methylergonovine (Methergine) is contraindicated in patients with hypertension. Epinephrine is the drug used to counteract the effects of anaphylactic shock.
Step-by-step explanation:
The use of methylergonovine (Methergine) is contraindicated in patients with hypertension. Methylergonovine is a medication used to prevent or control bleeding after childbirth, but it can cause an increase in blood pressure. Therefore, it should not be used in patients who have hypertension, as this could exacerbate their condition and potentially lead to severe complications.
Regarding the question about the drug used to counteract the effects of anaphylactic shock, the correct answer is a. epinephrine. Epinephrine is the first-line treatment for anaphylaxis and works rapidly to improve breathing, stimulate the heart, raise a dropping blood pressure, reverse hives, and reduce swelling of the face, lips, and throat.