Fig. 3From: Levosimendan for patients with severely reduced left ventricular systolic function and/or low cardiac output syndrome undergoing cardiac surgery: a systematic review and meta-analysisForest plot depicting analysis of the risk for postoperative low cardiac output syndrome in patients treated with levosimendan vs placebo and with low preoperative left ventricular ejection fraction. M-H Mantel-HaenszelBack to article page