Long-term cognitive functioning is impaired in ICU-treated COVID-19 patients: a comprehensive controlled neuropsychological study

Table 2 Features of ICU-treated patients (n = 72)

ICU variable	Result
IMV, n (%)	46 (63.9)
IMV, days, median (IQR)	13 (8.3–16.8)
Lowest PaO₂/FiO₂ < 100 mmHg, n (%)^a	28 (63.6)
Lowest PaO₂/FiO₂ 100–149 mmHg, n (%)^a	15 (34.1)
Lowest PaO₂/FiO₂ 150–199 mmHg, n (%)^a	1 (2.3)
Tracheostomy, n (%)	7 (15.2)
Pronation, n (% of IMV)	22 (47.8)
Number of proning episodes, median (IQR)	2 (1–3)
Delirium diagnosed during ICU stay, n (%)^b	24 (33.3)
Length of delirium, days, median (IQR)	2 (1–3)
AKI diagnosed during ICU stay, n (%)	11 (15.3)
RRT in ICU, n (%)	6 (8.3)
Days RRT given in ICU, median (IQR)^c	14 (13–20)
SAPS 24 h, median (IQR)^d	27 (20–37)
APACHE 24 h, median (IQR)^d	18 (13.5–20.5)
SOFA 24 h, median (IQR)^d	5 (3–8)

ICU Intensive care unit, IMV invasive mechanical ventilation, PaO₂/FiO₂ ratio of arterial oxygen partial pressure to fractional inspired oxygen, AKI acute kidney injury, RRT renal replacement therapy, SAPS Simplified Acute Physiology Score during the first 24 h of ICU stay, APACHE Acute Physiology and Chronic Health Evaluation during the first 24 h of ICU stay, SOFA Sequential Organ Failure Assessment during the first 24 h of ICU stay
^aPaO₂/FiO₂ ratio unavailable for 2 patients treated in another region
^bDelirium diagnosed as ICDSC 4 or more points in 21 of 70 patients and clinically in 3 of 70 patients. Data unavailable for 2 patients
^cData available for 5 of 6 patients. 1 patient was RRT dependent at ICU discharge
^dData available for 59 of 72 patients

ISSN: 1364-8535