Satish R. Raj

This study tests different medications to see if they can control the rapid heart rate and improve symptoms in people with chronic orthostatic intolerance (dizziness or fainting upon standing). About 150 participants with symptoms lasting over 6 months will try various drugs. The…

This study looks at whether drinking water can still raise blood pressure in people with orthostatic hypotension (a condition where blood pressure drops when standing up) if they had already drunk water a few hours earlier. About 20 adults aged 18 to 80 with this condition will h…

This study looks at how drinking 16 ounces of water changes blood pressure and heart function in people who have had a heart transplant. Researchers want to see if water can increase blood vessel resistance. The study involves 40 stable heart transplant patients and measures thei…

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 (low blood pressure upon standing). Twenty adults with this condition will have their blood pressure and heart rate measured a…

This study aims to understand the body's response to standing in people with orthostatic intolerance, a condition that causes symptoms like rapid heartbeat, dizziness, and fatigue. Researchers will measure heart rate, blood volume, and nerve function in 260 participants to uncove…

This study looks at sleep quality in people with postural tachycardia syndrome (POTS) compared to healthy volunteers. Participants wear an activity watch for several days to track sleep patterns. The goal is to understand if POTS causes sleep disturbances, not to test a treatment…