Professional and Linguistic Assessments Board (PLAB) Practice Exam

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What class of medication is generally indicated for patients with a history of myocardial infarction?

Statins
Benzodiazepines
Beta Blockers
Diuretics

The correct answer is: Beta Blockers

In patients with a history of myocardial infarction, beta blockers are often indicated due to their important role in reducing cardiovascular events and improving survival rates. These medications work by blocking the effects of adrenaline on the heart, resulting in decreased heart rate and blood pressure. By lowering myocardial oxygen demand and improving coronary blood flow, beta blockers can help prevent recurrence of heart-related issues. Additionally, they contribute to the stabilization of heart rhythms, which can be particularly beneficial after a myocardial infarction. Clinical guidelines frequently recommend the use of beta blockers post-MI as part of a comprehensive treatment strategy that may also include other agents such as antiplatelet medications and statins, but the focus here is on their specific protective effects on the heart and importance in secondary prevention strategies.