Table 2.

Frequency of complications

Complication	Ever among all patients, N (%)	As initial complication, N (%)
Cardiac and operative
Low cardiac output syndrome	135 (71%)	73 (38%)
Need for MCS	88 (46%)	30 (16%)
Cardiac arrest	99 (52%)	12 (6%)
Unplanned cardiac re-intervention	62 (32%)	2 (1%)
Pulmonary hypertension	18 (9%)	9 (5%)
Hypoxemia	53 (28%)	11 (6%)
Pericardial effusion	9 (5%)	0
Arrhythmia	92 (48%)	25 (13%)
CHB requiring PPM	3 (2%)	0
Hemorrhagic/Thrombotic
Bleeding requiring transfusion	40 (21%)	7 (4%)
Bleeding requiring operation	27 (14%)	4 (2%)
Thrombosis	28 (15%)	0
Shunt thrombosis	5 (3%)	0
Respiratory
Acute respiratory failure	41 (21%)	3 (2%)
Chronic respiratory failure	83 (43%)	1 (1%)
Chylothorax	28 (15%)	1 (1%)
Pleural effusion requiring drainage	47 (25%)	1 (1%)
Prolonged pleural drainage	18 (9%)	0
Vocal cord paralysis	4 (2%)	0
Diaphragm paralysis	1 (1%)	0
Neurologic
Seizure	42 (22%)	0
Stroke	16 (8%)	0
Hypoxic-ischemic encephalopathy	37 (19%)	0
Renal
Acute kidney injury	51 (27%)	2 (1%)
Acute renal failure requiring dialysis	43 (23%)	0
Other
Necrotizing enterocolitis	17 (9%)	1 (1%)
Hospital acquired infection	74 (39%)	0
Hepatic failure	28 (9%)	0
Other	122 (64%)	9 (5%)

CHB, Complete heart block; MCS, mechanical circulatory support; PPM, permanent pacemaker