Echocardiography

This trial studies people with pulmonary arterial hypertension (PAH) who live permanently above 2600 meters. Researchers want to see if spending one week at sea level and then returning to high altitude changes pressure in the lung's blood vessels. They will measure heart and lun…

Researchers are studying healthy adults who live above 2600 meters to see how their lungs respond when they descend to sea level for a week and then return to their usual altitude. The trial measures pulmonary resistance, which is how hard the heart must work to pump blood throug…

Researchers are studying what happens when people who live permanently above 2600 meters, such as in Quito, Ecuador, spend a week at sea level. They will measure lung blood pressure and other heart and lung functions in healthy adults and in patients with pulmonary arterial hyper…

This trial asks whether a one-week stay at sea level can lower blood pressure in the lungs of people with pulmonary arterial hypertension who live permanently above 2600 meters. Researchers will compare heart and lung measurements taken at high altitude with those taken after sev…

This study looks at how running an ultra-trail race (80 or 160 km) affects the heart's function in adult amateur runners. Researchers will use echocardiography and blood tests before, during, and after the race to see if there are temporary changes in heart function and biomarker…

This study will use a detailed heart ultrasound technique called speckle tracking to look for early signs of heart trouble in 100 adults with inflammatory bowel disease (IBD). Researchers want to see if this method can catch heart changes before they become serious and how those …