Table 1 Outcome data

Time to correct lactic acidosis (h)

\(\bar{X}_{1}\) = 19.7 ± 12.6

\(\bar{X}_{2}\) = 29.3 ± 19.6

Z-value = − 2.02, p-value = 0.04

Time to extubation (h)

\(\bar{X}_{1}\) = 29 ± 12.7

\(\bar{X}_{2}\) = 55.1 ± 44.5

Z-value = − 1.92, p-value = 0.05

Periprocedural requirement for IABP (N)

2/33

10/37

RR = 0.22, 95% Cl = 0.05–0.95, Z = 2.02, p = 0.04

Requirement for tracheostomy (N)

3/33

4/37

RR = 0.84, 95% Cl = 0.20–3.48, Z = 0.23, p = 0.81