In a patient over 75 with good blood pressure who experiences a TIA or stroke, what is the next best diagnostic step?

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Multiple Choice

In a patient over 75 with good blood pressure who experiences a TIA or stroke, what is the next best diagnostic step?

Explanation:
Detecting a cardioembolic source, especially atrial fibrillation, is the most important immediate step after a TIA or stroke in an older patient. A quick, noninvasive ECG can reveal AF or another arrhythmia, and identifying AF directly changes management from antiplatelet therapy to anticoagulation to prevent recurrence. If the ECG doesn’t show AF but suspicion remains for intermittent AF, longer rhythm monitoring can be used later. While carotid imaging or echocardiography can provide valuable information about other potential sources, the ECG is the best next test because it most directly influences urgent treatment decisions.

Detecting a cardioembolic source, especially atrial fibrillation, is the most important immediate step after a TIA or stroke in an older patient. A quick, noninvasive ECG can reveal AF or another arrhythmia, and identifying AF directly changes management from antiplatelet therapy to anticoagulation to prevent recurrence. If the ECG doesn’t show AF but suspicion remains for intermittent AF, longer rhythm monitoring can be used later. While carotid imaging or echocardiography can provide valuable information about other potential sources, the ECG is the best next test because it most directly influences urgent treatment decisions.

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