Stopped: Study was stopped due to funding and time constraints.
The aim of this study is to utilize lung ultrasound to detect the development of extravascular lung water in patients undergoing clinically indicated invasive hemodynamic exercise stress testing for symptomatic shortness of breath. The study will correlate the lung ultrasound findings with cardiac hemodynamics and measurements of extravascular lung water in an effort to better understand the pathophysiology of exertional dyspnea.
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Correlation of the Number of Lung Ultrasound B-Lines With Intra-cardiac Filling Pressures
Timeframe: Lung ultrasound imaging for B-Lines and assessment of intracardiac hemodynamics will be performed during the scheduled invasive stress test (initial visit, day #1).