Assertion: fibrillation's symptom | /r/CapableOf | remain unresponsive
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Source sentences:
text: The conversion of atrial fibrillation to normal sinus rhythm has been shown to decrease symptoms.2 Rhythm control is most often used in patients with new-onset atrial fibrillation; in younger patients; and in patients whose symptoms remain unresponsive to, or who are intolerant of, rate-control medications.