Clinical Features of COVID-19 Patients

At the moment of intensive care unit admission and during the in intensive care unit staying, the following data were collected: peripheral lymphocyte subsets were measured by multiple-color flow cytometry, chest computed tomography and ultrasonography scans, arterial blood gas parameters (pH, partial pressure of carbon dioxide, partial pressure of oxygen, concentration of hydrogen carbonate, base excess, and arterial oxygen saturation), and pain assessed by using numeric rating scale.