TACHYCARDIA

This early study tests the safety and performance of a new implantable defibrillator (the CorSky ICD) in 52 people who need one for heart failure or dangerous fast heart rhythms. Participants will be followed for 12 months to check for device-related problems. The device is progr…

This study tests several medications to see if they can control the rapid heart rate and symptoms that occur when people with chronic orthostatic intolerance stand up. Researchers will give single doses of drugs like acetazolamide, atomoxetine, clonidine, entacapone, and proprano…

This study gathers information from 1,000 adults who have or will receive a cardiac implantable electronic device (CIED) for heart rhythm problems like bradycardia or tachycardia. Researchers collect details about the device, the implant procedure, and patient characteristics to …

This study at Vanderbilt University Medical Center is looking at whether people with postural tachycardia syndrome (POTS) have higher levels of certain immune proteins that might affect their symptoms. Researchers will measure these proteins in blood samples and test how the hear…

This study looks at why some people, especially young women, feel dizzy, tired, or have a racing heart when they stand up—a condition called orthostatic intolerance. Researchers will measure things like blood volume, sweat response, and heart rate in 260 participants to better un…