Lower diaphragmatic thickness found among long COVID patients with unspecific fatigue and dyspnea medrxivpreprint NUFeinbergMed SARSCoV2 LongCOVID Fatigue Dyspnea LowerDiaphragmaticThickness
By Pooja Toshniwal PahariaJul 4 2022Reviewed by Aimee Molineux In a recent study posted to the medRxiv* preprint server, researchers defined the sonographic diaphragm phenotype of long coronavirus disease patients with unspecific fatigue and dyspnea.
The study cohort comprised 37 polymerase chain reaction -confirmed or clinically diagnosed long COVID patients referred for ultrasonic neuromuscular assessment from a pulmonary medicine clinic without a clearly defined cardiopulmonary etiology for their symptoms. Out of the study cohort, 27 were never hospitalized due to COVID-19 and none of the patients required mechanical ventilation.
Before the ultrasound referral, the medical history of all patients was obtained and the participants underwent a physical examination. Patients received respiratory muscle training with a home exercise based on resistance during the periods of inspiration and expiration to be completed five times per day. Additionally, the participants were educated on the strategies for diaphragmatic, shortness of breath, and cardiovascular conditioning habit-forming strategies.
The authors speculated that the findings represented a type of disuse atrophy, a condition responsive to cardiopulmonary physical therapy. In accordance, among the patients, 78% who underwent outpatient cardiopulmonary therapy and 75% patients who took the six-minute walk tests showed functional improvements.
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