Use of Cardiopulmonary Stress Testing for Patients With Unexplained Dyspnea Post-Coronavirus Disease.
Mancini, Donna M, Brunjes, Danielle L, Lala, Anuradha et al.·JACC. Heart failure·2021
This study looked at 41 people who had long-lasting breathing problems after COVID-19, even though their standard lung and heart tests appeared normal. Researchers used a special exercise test to measure how well their bodies could use oxygen and how they breathed during activity. They found that most patients had unusual breathing patterns or reduced exercise capacity, and about half met the criteria for ME/CFS.