| Treatment | RR | 95% CI lower limit | 95% CI upper limit | z | P |
| Levosimendan | 0.3333 | 0.0147 | 7.5655 | ‐0.69 | 0.4904 |
| Levosimendan + Dobutamine | NA | NA | NA | NA | NA |
| Milrinone | 0.3483 | 0.0099 | 12.2320 | ‐0.58 | 0.5613 |
| Milrinone + Dobutamine | NA | NA | NA | NA | NA |
| Placebo | 1 | 1 | NA | NA |
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