Benjamin R Griffin1, Michael Bronsert2, T Brett Reece3, Jay D Pal3, Joseph C Cleveland3, David A Fullerton3, Katja M Gist4, Anna Jovanovich5, Diana Jalal1, Sarah Faubel5, Muhammad Aftab6. 1. Division of Nephrology, Department of Medicine, Carver College of Medicine, University of Iowa, Iowa City, Iowa. 2. Adult and Child Consortium for Health Outcomes Research and Delivery Science and Surgical Outcomes and Applied Research, University of Colorado, Aurora, Colorado. 3. Division of Cardiothoracic Surgery, University of Colorado Anschutz Medical Campus, Aurora, Colorado. 4. Department of Pediatrics, Children's Hospital Colorado, The Heart Institute, Aurora, Colorado. 5. Division of Nephrology, University of Colorado Anschutz Medical Campus, Aurora, Colorado; Department of Medicine, Rocky Mountain Regional VA Medical Center, Denver, Colorado. 6. Division of Cardiothoracic Surgery, University of Colorado Anschutz Medical Campus, Aurora, Colorado; Department of Medicine, Rocky Mountain Regional VA Medical Center, Denver, Colorado. Electronic address: muhammad.aftab@ucdenver.edu.
Abstract
BACKGROUND: Thrombocytopenia is a risk factor for morbidity and mortality in critically ill patients, and is common after cardiopulmonary bypass (CPB). In this study, we evaluate whether thrombocytopenia after CPB is an independent risk factor for postoperative morbidity and mortality. METHODS: We retrospectively evaluated 1364 patients requiring CPB at the University of Colorado Hospital between January 2011 and May 2016. Platelet nadir, absolute change in platelets, and percent change in platelets were modeled as continuous variables. Patients with postoperative thrombocytopenia (defined a nadir <75 × 103/μL within 72 hours) were also compared with patients without thrombocytopenia in a propensity-matched model. The primary outcome was in-hospital mortality, and secondary outcomes included postoperative infection, postoperative acute kidney injury (AKI), postoperative stroke, and prolonged intensive care unit (ICU) and hospital lengths of stay (LOS). RESULTS: Postoperative thrombocytopenia occurred in 356 (26.0%) patients. In multivariable analysis, platelet nadir was significantly inversely associated with mortality (odds ratio [OR], 0.955; 95% confidence interval [CI], 0.934-0.975; P < .001), postoperative infection (OR, 0.992; 95% CI, 0.986-0.999; P = .03), AKI (all stage) (OR, 0.993; 95% CI, 0.988-0.998; P = .01), AKI (stage 3) (OR, 0.966; 95% CI, 0.951-0.982; P < .001), postoperative stroke (OR, 0.974; 95% CI, 0.956-0.992; P = .006), prolonged ICU stay (OR, 0.986; 95% CI, 0.981-0.991; P < .001), and hospital LOS (OR, 0.998; 95% CI, 0.997-0.999; P = .001). Percent change in platelets from baseline was also significantly associated with all primary and secondary outcomes. CONCLUSIONS: Postoperative thrombocytopenia is independently associated with postoperative mortality, AKI, infection, stroke, and prolonged ICU and hospital LOS. Serial platelet monitoring may help identify patients at higher risk of postoperative complications. Further studies investigating strategies to reduce postoperative thrombocytopenia, including reducing CPB time, are needed.
BACKGROUND:Thrombocytopenia is a risk factor for morbidity and mortality in critically illpatients, and is common after cardiopulmonary bypass (CPB). In this study, we evaluate whether thrombocytopenia after CPB is an independent risk factor for postoperative morbidity and mortality. METHODS: We retrospectively evaluated 1364 patients requiring CPB at the University of Colorado Hospital between January 2011 and May 2016. Platelet nadir, absolute change in platelets, and percent change in platelets were modeled as continuous variables. Patients with postoperative thrombocytopenia (defined a nadir <75 × 103/μL within 72 hours) were also compared with patients without thrombocytopenia in a propensity-matched model. The primary outcome was in-hospital mortality, and secondary outcomes included postoperative infection, postoperative acute kidney injury (AKI), postoperative stroke, and prolonged intensive care unit (ICU) and hospital lengths of stay (LOS). RESULTS: Postoperative thrombocytopenia occurred in 356 (26.0%) patients. In multivariable analysis, platelet nadir was significantly inversely associated with mortality (odds ratio [OR], 0.955; 95% confidence interval [CI], 0.934-0.975; P < .001), postoperative infection (OR, 0.992; 95% CI, 0.986-0.999; P = .03), AKI (all stage) (OR, 0.993; 95% CI, 0.988-0.998; P = .01), AKI (stage 3) (OR, 0.966; 95% CI, 0.951-0.982; P < .001), postoperative stroke (OR, 0.974; 95% CI, 0.956-0.992; P = .006), prolonged ICU stay (OR, 0.986; 95% CI, 0.981-0.991; P < .001), and hospital LOS (OR, 0.998; 95% CI, 0.997-0.999; P = .001). Percent change in platelets from baseline was also significantly associated with all primary and secondary outcomes. CONCLUSIONS: Postoperative thrombocytopenia is independently associated with postoperative mortality, AKI, infection, stroke, and prolonged ICU and hospital LOS. Serial platelet monitoring may help identify patients at higher risk of postoperative complications. Further studies investigating strategies to reduce postoperative thrombocytopenia, including reducing CPB time, are needed.
Authors: Megan SooHoo; Benjamin Griffin; Anna Jovanovich; Danielle E Soranno; Emily Mack; Sonali S Patel; Sarah Faubel; Katja M Gist Journal: Pediatr Nephrol Date: 2018-03-05 Impact factor: 3.714
Authors: Miklos D Kertai; Shan Zhou; Jörn A Karhausen; Mary Cooter; Edmund Jooste; Yi-Ju Li; William D White; Solomon Aronson; Mihai V Podgoreanu; Jeffrey Gaca; Ian J Welsby; Jerrold H Levy; Mark Stafford-Smith; Joseph P Mathew; Manuel L Fontes Journal: Anesthesiology Date: 2016-02 Impact factor: 7.892
Authors: Benjamin R Griffin; Chaorong Wu; John C O'Horo; Sarah Faubel; Diana Jalal; Kianoush Kashani Journal: Crit Care Med Date: 2021-02-01 Impact factor: 7.598