Step-by-step explanation:
The correct answer is a. Sinus bradycardia.
Metoprolol is a beta-blocker medication commonly used to treat conditions such as hypertension (high blood pressure), angina (chest pain), and certain heart rhythm disorders. It works by blocking the effects of adrenaline on the heart and blood vessels, thereby reducing heart rate and blood pressure.
Sinus bradycardia refers to a slower-than-normal heart rate originating from the sinus node, which is the natural pacemaker of the heart. Metoprolol further decreases heart rate, so it is contraindicated in individuals with sinus bradycardia or heart block, as it can further slow down the heart rate and potentially lead to complications.
Hypertension, migraine headaches, and benign prostatic hyperplasia are not contraindications for metoprolol. In fact, hypertension is one of the primary conditions for which metoprolol is commonly prescribed. However, it is important for healthcare professionals to assess and consider individual patient factors and medical history before administering any medication.