Massimo Meco1, Andrea Montisci2, Enrico Giustiniano3, Massimiliano Greco3, Federico Pappalardo4, Liborio Mammana5, Paolo Panisi1, Claudio Roscitano1, Silvia Cirri6, Francesco Donatelli7, Giovanni Albano1. 1. Anesthesia and Intensive Care Department, Humanitas Gavazzeni Clinic, Bergamo, Italy. 2. Department of Anesthesia and Intensive Care, Cardiothoracic Center, Istituto Clinico Sant'Ambrogio, Milano, Italy; Chair of Cardiac Surgery, University of Milan, Milano, Italy. 3. Department of Anesthesia and Intensive Care, IRCCS Humanitas Clinical and Research Center, Rozzano, Italy. 4. Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute and Vita-Salute San Raffaele University, Milano, Italy. 5. Department of Cardiac Surgery, Cardiothoracic Center, Istituto Clinico Sant'Ambrogio, Milano, Italy. Electronic address: liborio.mammana@gmail.com. 6. Department of Anesthesia and Intensive Care, Cardiothoracic Center, Istituto Clinico Sant'Ambrogio, Milano, Italy. 7. Chair of Cardiac Surgery, University of Milan, Milano, Italy; Department of Cardiac Surgery, Cardiothoracic Center, Istituto Clinico Sant'Ambrogio, Milano, Italy.
Abstract
OBJECTIVES: Postoperative hemorrhage in cardiac surgery is a significant cause of morbidity and mortality. Standard laboratory tests fail as predictors for bleeding in the surgical setting. The use of viscoelastic (VE) hemostatic assays thromboelastography (TEG) and rotational thromboelastometry (ROTEM) could be an advantage in patients undergoing cardiac surgery. The objective of this meta-analysis was to analyze the effects (benefits and harms) of VE-guided transfusion practice in cardiac surgery patients. DESIGN: A meta-analysis of randomized trials. SETTING: For this study, PubMed, EMBASE, Scopus, and the Cochrane Collaboration database were searched, and only randomized controlled trials were included. A systematic review and meta-analysis were performed in accordance with the standards set forth by the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement, using a random-effects model. PARTICIPANTS: The study comprised adult cardiac surgery patients. INTERVENTIONS: VE-hemostatic assays transfusion algorithm compared with transfusion algorithms based on clinicians' discretion. MEASUREMENTS AND MAIN RESULTS: Seven comparative randomized controlled trials were considered, including a total of 1,035 patients (522 patients in whom a TEG- or ROTEM-based transfusion algorithm was used). In patients treated according to VE-guided algorithms, red blood cell (odds ratio 0.61; 95% confidence interval [CI]: 0.37-0.99; p: 0.04; I2: 66%) and fresh frozen plasma transfusions (risk difference 0.22; 95% CI: 0.11-0.33; p < 0.0001; I2: 79%) use was reduced; platelets transfusion was not reduced (odds ratio 0.61; 95% CI: 0.32-1.15; p: 0.12; I2 74%). CONCLUSIONS: This study demonstrated that the use of VE assays in cardiac surgical patients is effective in reducing allogenic blood products exposure, postoperative bleeding at 12 and 24 hours after surgery, and the need for redo surgery unrelated to surgical bleeding.
OBJECTIVES:Postoperative hemorrhage in cardiac surgery is a significant cause of morbidity and mortality. Standard laboratory tests fail as predictors for bleeding in the surgical setting. The use of viscoelastic (VE) hemostatic assays thromboelastography (TEG) and rotational thromboelastometry (ROTEM) could be an advantage in patients undergoing cardiac surgery. The objective of this meta-analysis was to analyze the effects (benefits and harms) of VE-guided transfusion practice in cardiac surgery patients. DESIGN: A meta-analysis of randomized trials. SETTING: For this study, PubMed, EMBASE, Scopus, and the Cochrane Collaboration database were searched, and only randomized controlled trials were included. A systematic review and meta-analysis were performed in accordance with the standards set forth by the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement, using a random-effects model. PARTICIPANTS: The study comprised adult cardiac surgery patients. INTERVENTIONS: VE-hemostatic assays transfusion algorithm compared with transfusion algorithms based on clinicians' discretion. MEASUREMENTS AND MAIN RESULTS: Seven comparative randomized controlled trials were considered, including a total of 1,035 patients (522 patients in whom a TEG- or ROTEM-based transfusion algorithm was used). In patients treated according to VE-guided algorithms, red blood cell (odds ratio 0.61; 95% confidence interval [CI]: 0.37-0.99; p: 0.04; I2: 66%) and fresh frozen plasma transfusions (risk difference 0.22; 95% CI: 0.11-0.33; p < 0.0001; I2: 79%) use was reduced; platelets transfusion was not reduced (odds ratio 0.61; 95% CI: 0.32-1.15; p: 0.12; I2 74%). CONCLUSIONS: This study demonstrated that the use of VE assays in cardiac surgical patients is effective in reducing allogenic blood products exposure, postoperative bleeding at 12 and 24 hours after surgery, and the need for redo surgery unrelated to surgical bleeding.
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