Up to 2 million people in the U.S. experience rapid-fire heartbeats from time to time, and many end up in the hospital for treatment. But an investigational nasal spray may help folks with paroxysmal supraventricular tachycardia (PSVT) safely and quickly slow their heart rate on their own. “Currently, PSVT is treated with intravenous medication administered… read on > read on >



















