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.
The data were retrospectively collected during the first and the second wave of epidemic in COVID-19 patients with Severe Acute Respiratory Syndrome Coronavirus 2, at the moment of intensive care unit admission and during the in intensive care unit staying.