The purpose of this study is to evaluate the safety of etripamil nasal spray in patients with Paroxysmal Supraventricular Tachycardia (PSVT).
Atrial fibrillation (AF) and atrial flutter (AFL) are cardiac rhythm problems where there is an irregular, rapid heart rate. Investigators plan to study Emergency Department (ED) patients with recent-onset episodes of AF or AFL (RAFF) where rapid heart rate requires urgent treatment to restore normal heart rhythm. RAFF is the most common rhythm disorder managed in the ED. Investigators recently showed that doctors use a wide variety of treatment approaches in Canadian EDs for RAFF.