Introduction: Understanding pulmonary function at various phases after coronavirus disease 2019 (COVID-19) infection is critical for determining the exact pathophysiological mechanism of COVID-19.
Research Question: What is the correlation between spirometry indices and clinical indicators in COVID-19 patients over a 6-week follow-up?
Objectives: 1) To assess deterioration or improvement in spirometry parameters including forced vital capacity (FVC), forced expiratory volume in one second (FEV), and ratio FEV/FVC in COVID-19 patients. 2) To study the correlation between FVC, FEV, and FEV/FVC with oxygen saturation and clinical findings.