| Treatment | RR | 95% CI lower limit | 95% CI upper limit | z | P |
| Levosimendan | 0.6833 | 0.2087 | 2.2378 | ‐0.63 | 0.5292 |
| Levosimendan + Dobutamine | NA | NA | NA | NA | NA |
| Milrinone | 0.7139 | 0.1526 | 3.3389 | ‐0.43 | 0.6685 |
| Milrinone + Dobutamine | NA | NA | NA | NA | NA |
| Placebo | 2.0499 | 0.2369 | 17.7385 | 0.65 | 0.5144 |
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