Satish R. Raj

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 looks at whether drinking 16 ounces of water raises blood pressure more in the morning or the afternoon in people with orthostatic hypotension (a condition where blood pressure drops when standing). Twenty participants will drink water at two different times of day, an…

This study looks at whether drinking water raises blood pressure as much the second time if you've already had a full glass a few hours earlier. Researchers are testing 20 adults with orthostatic hypotension, a condition where blood pressure drops when standing. Participants will…

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…

This study tests how drinking 500 ml of water affects blood pressure and heart function in 40 stable heart transplant patients. Researchers will measure changes in blood vessel resistance and blood pressure over 40 minutes. The goal is to understand if water can be a simple way t…

This study uses a wrist-worn activity watch to measure sleep quality in people with orthostatic intolerance (a condition where standing causes dizziness) compared to healthy volunteers. Researchers want to see if these patients have worse sleep, like taking longer to fall asleep.…