Tufts Medical Center
Prospective cohort study to evaluate the utility of quantitative CT analysis to assess ventilation and perfusion defects in patients with Post-acute Sequelae of SARS-CoV-2 (PASC) and functional limitations
This is a study to describe the overall pattern of lung ventilation and perfusion defects in individuals with PASC. Subjects with PASC with a documented history of COVID-19 and persistent symptoms of fatigue, dyspnea, and/or exercise intolerance will complete questionnaires, and undergo pulmonary function tests, 6-minute walk tests, and a low dose CT chest to describe the overall pattern of lung regional ventilation and blood distribution and to compare this pattern to asymptomatic controls with and without prior COVID-19.
Inclusion Criteria: * Age ≥ 18 * Self-reported or documented SARS-CoV-2 infection by RT-PCR or Antigen testing \> 3 months ago or no previous history of SARS-CoV-2 infection (control group only) * Normal or mild abnormalities on baseline Pulmonary Function Tests (PFTs) * New or worsening symptoms of chronic fatigue, dyspnea or exercise intolerance after COVID-19 with otherwise unclear etiology (PASC group only) Exclusion Criteria: * SARS-CoV-2 infection by RT-PCR or Antigen testing within the last 3 months * Inability to provide consent or non-English speaking * Pregnancy * Any respiratory…
Quantitative Computed Tomography of the chest in the inspiratory and expiratory phases will be performed to assess regional lung ventilation as well as pulmonary vascular volume and distribution
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