How does a right-sided infarction typically present and how should it be treated?

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Multiple Choice

How does a right-sided infarction typically present and how should it be treated?

Right-sided myocardial infarction is usually associated with an inferior wall MI from RCA occlusion and presents with hypotension driven by reduced preload to the left ventricle. The lungs are typically clear because left-sided filling pressures aren’t elevated, so you don’t see pulmonary edema. On exam you’ll often notice raised jugular venous pressure from the congested right ventricle. The treatment goal is to maintain adequate right ventricular preload to sustain left ventricular output. That means give IV fluids cautiously to optimize preload and monitor the patient’s response. Nitrates and diuretics are avoided because they lower preload and can make hypotension worse in a right-sided infarct. Reperfusion—typically via PCI or thrombolysis if appropriate—remains essential. If blood pressure stays unstable or bradycardia develops, consider vasopressor support (such as norepinephrine) and treat bradycardia when present. Use right-sided ECG leads to confirm right ventricular involvement as you guide treatment. Oxygen and comfort measures as needed, while avoiding aggressive preload-reducing therapies.

Right-sided myocardial infarction is usually associated with an inferior wall MI from RCA occlusion and presents with hypotension driven by reduced preload to the left ventricle. The lungs are typically clear because left-sided filling pressures aren’t elevated, so you don’t see pulmonary edema. On exam you’ll often notice raised jugular venous pressure from the congested right ventricle.

The treatment goal is to maintain adequate right ventricular preload to sustain left ventricular output. That means give IV fluids cautiously to optimize preload and monitor the patient’s response. Nitrates and diuretics are avoided because they lower preload and can make hypotension worse in a right-sided infarct. Reperfusion—typically via PCI or thrombolysis if appropriate—remains essential. If blood pressure stays unstable or bradycardia develops, consider vasopressor support (such as norepinephrine) and treat bradycardia when present. Use right-sided ECG leads to confirm right ventricular involvement as you guide treatment. Oxygen and comfort measures as needed, while avoiding aggressive preload-reducing therapies.

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