What contraindication exists for administering methylergonovine (Methergine) postpartum?

• A. Diabetes
• B. Hypertension
• C. Asthma
• D. Heart disease

Answer: (B)

Methylergonovine (Methergine) is a medication used to manage postpartum hemorrhage by stimulating uterine contractions. However, one of its significant contraindications is hypertension. This is due to its vasoconstrictive properties, which can elevate blood pressure. Administering methylergonovine to a patient with hypertension poses serious health risks, including the possibility of hypertensive crisis, which can lead to severe complications or even life-threatening situations.

In the context of the other options, while conditions like diabetes, asthma, and heart disease may require careful consideration and monitoring when administering medications in general, they do not carry the same absolute contraindication as hypertension does for methylergonovine. Hypertensive patients are particularly vulnerable to adverse effects from medications that can affect vascular tone, making it critical to avoid using methylergonovine in this population.