Table 4: Association of Laboratory-defined Haemolysis with On-device and 30-day Mortality.

	On-device Mortality		30-day Mortality
	OR [95% CI]	p-value	OR [95% CI]	p-value
Laboratory haemolysis	0.605 [0.109–3.357]	0.565	2.181 [0.367–12.952]	0.391
Origin of cardiogenic shock	1.288 [0.295–5.628]	0.736	0.821 [0.185–3.638]	0.794
Emergency Impella insertion	2.347 [0.315–17.467]	0.405	1.266 [0.212–7.552]	0.795
Lactic acid prior to device insertion	1.136 [0.940–1.371]	0.186	1.004 [0.838–1.203]	0.966
Pulse pressure variation	1.016 [0.983–1.050]	0.351	1.017 [0.983–1.051]	0.334
Left ventricular ejection fraction	0.973 [0.929–1.019]	0.244	0.973 [0.934–1.015]	0.205

Laboratory haemolysis defined as a drop in haemoglobin ≥2 g/dl and either undetectable haptoglobin or lactate dehydrogenase ≥250 units/l (twofold the upper limit of normal).