New Non-Invasive exercise test could replace catheters for Heart-Lung diagnosis

This study checks if a new exercise test called CPETecho gives consistent results when repeated a week later. It combines a bike or treadmill test with an ultrasound of the heart, all without needles or catheters. Thirty adults with breathing or heart issues will do the test twice, one week apart. If the results are reliable, this could become a safer, simpler way to diagnose heart and lung problems during exercise.