| Treatment | RR | 95% CI lower limit | 95% CI upper limit | z | P |
| Levosimendan | 0.5721 | 0.1535 | 2.1319 | ‐0.83 | 0.4054 |
| Levosimendan + Dobutamine | NA | NA | NA | NA | NA |
| Levosimendan + Milrinone + Dopamine | NA | NA | NA | NA | NA |
| Milrinone | 1.2078 | 0.1828 | 7.9786 | 0.20 | 0.8446 |
| Milrinone + Dobutamine | NA | NA | NA | NA | NA |
| Milrinone + Dopamine | NA | NA | NA | NA | NA |
| Placebo | reference | reference | reference | reference | reference |
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