Reliability of heart and lung exercise testing with ultrasound

This study tests a new computer program that automatically analyzes cardiopulmonary exercise tests (CPET)—tests that measure how your heart, lungs, and muscles work during exercise. Researchers want to make sure the computer's interpretations are accurate and helpful for doctors worldwide.

This study tests whether using lung ultrasound can help guide physical therapy for hospitalized patients with new breathing problems. It aims to make therapy safer and more effective by seeing how the lungs look in real time.

This study looks at how well two heart tests taken during exercise—direct heart pressure measurement and an ultrasound—can explain shortness of breath with activity. It may help doctors better diagnose what’s causing your symptoms.

This study tests whether using ultrasound on the lungs helps emergency doctors make faster, more accurate diagnoses for patients with severe shortness of breath.

This study is testing a new method to estimate your fitness level from the results of standard heart tests you may already be getting. It aims to provide useful information to help your care team understand your heart and lung health better.

This study uses a special ultrasound (echocardiography) with a contrast dye to see how blood flows through your lungs during exercise. It aims to help doctors better understand why patients get short of breath during activity.