ORTHOSTATIC INTOLERANCE

This study tests a minimally invasive procedure to open narrowed veins above the heart in adults who feel dizzy or faint when standing. The goal is to improve blood flow and reduce symptoms. 100 adults aged 18 and older who have not been helped by standard treatments will be enro…

This study looks at whether easy counterpressure maneuvers—like crossing legs, bending, or tensing arms—can help prevent fainting in children aged 6 to 18. Participants who visit the emergency department after a fainting episode will either receive usual care or learn these techn…

This study looks at how different leg movements, like crossing legs or tensing muscles, affect blood pressure and blood flow in children aged 6-18 who faint often. Researchers will measure these responses in 30 children to understand how body movements can help control fainting. …

This study looks at why some people, especially older adults and women, feel dizzy or faint when standing up. Researchers will use a special chamber to safely mimic standing up and measure how the heart and blood vessels work together. They will also test if squeezing a handgrip …

This study looks at whether increasing carbon dioxide (CO2) levels can lower heart rate and reduce symptoms in people with Postural Orthostatic Tachycardia Syndrome (POTS) when they stand up. Researchers will test different CO2 concentrations to find the most effective one. The s…