Table 3 In-hospital events and clinical outcome. Arrhythmia (n = 34) No Arrhythmia (n = 132) p-Value * Duration of hospitalization(days), median (P25; P75) 24.0 (10.0; 33.0) (n = 30) 9.0 (5.0; 15.0) (n = 124) <0.001 † Admission to ICU/IMC 19 (55.9) 46 (24.8) 0.025 Duration of ICU/IMC-stay (days), median (P25; P75) 23.0 (8.0; 33.0) 7.0 (3.0; 14.5) 0.004 † Oxygen therapy 24 (70.6) 80 (60.6) 0.299 HFNC/NIV therapy 14 (41.2) 25 (19.1) 0.010 Mechanical ventilation 18 (52.9) 19 (14.4) <0.001 Duration of mechanical ventilation (days), median (P25; P75) 17.5 (10.0; 32.5) 15.0 (7.0; 25.0) 0.599 † Vasopressor therapy 16 (47.1) 14 (10.6) <0.001 Myocardial infarction 3 (8.8) 1 (0.8) 0.021 Death 10 (29.4) 16 (12.1) 0.026 HFNC = high-flow nasal canula; ICU = intensive care unit; IMC = intermediate care unit; NIV = non-invasive ventilation. * = Fisher-Boschloo-test was used, unless stated otherwise. † = Wilcoxon-Mann-Whitney-test.