Mabel Chung1, Fausto R Cabezas2, Jose I Nunez2, Kevin F Kennedy3, Katelyn Rick2, Peter Rycus4, Mandeep R Mehra5, A Reshad Garan2, Robb D Kociol2, E Wilson Grandin6. 1. Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Boston, Massachusetts; Smith Center for Outcomes Research in Cardiology, Division of Cardiovascular Medicine, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts. 2. Division of Cardiovascular Medicine, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts. 3. Smith Center for Outcomes Research in Cardiology, Division of Cardiovascular Medicine, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts; Mid-America Heart Institute, St. Luke's Health System, Kansas City, Missouri. 4. Extracorporeal Life Support Organization, Ann Arbor, Michigan. 5. Center for Advanced Heart Disease, Brigham Health Heart and Vascular Center, Boston, Massachusetts. 6. Smith Center for Outcomes Research in Cardiology, Division of Cardiovascular Medicine, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts; Division of Cardiovascular Medicine, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts. Electronic address: wgrandin@bidmc.harvard.edu.
Abstract
OBJECTIVES: This study sought to determine the frequency, incidence rates over time, association with mortality, and potential risk factors for hemocompatibility-related adverse events (HRAEs) occurring during venoarterial-extracorporeal life support (VA-ECLS). BACKGROUND: HRAEs are common complications of VA-ECLS. Studies examining relevant clinical predictors and the association of HRAEs with survival are limited by small sample size and single-center setting. METHODS: We queried adult patients supported with VA-ECLS from 2010 to 2017 in the Extracorporeal Life Support Organization database to assess the impact of HRAEs on in-hospital mortality. RESULTS: Among 11,984 adults meeting study inclusion, 8,457 HRAEs occurred; 62.1% were bleeding events. The HRAE rate decreased significantly over the study period (p trend <0.001), but rates of medical bleeding and ischemic stroke remained stable. HRAEs had a cumulative association with mortality in adjusted analysis: 1 event, odds ratio (OR) of 1.43; 2 events, OR of 1.86; ≥3 events, OR of 3.27 (p < 0.001 for all). HRAEs most strongly associated with mortality were medical bleeding, including intracranial (OR: 7.71), pulmonary (OR: 3.08), and gastrointestinal (OR: 1.95) hemorrhage and ischemic stroke (OR: 2.31); p < 0.001 for all. Risk factors included the following: for bleeding: older age, lower pH, and female sex; for thrombosis: younger age, male sex, Asian race, and non-polymethylpentene oxygenator; and for both: time on ECLS, central cannulation, and renal failure. CONCLUSIONS: Although decreasing, HRAEs remain common during VA-ECLS and have a cumulative association with survival. Bleeding events are twice as common as thrombotic events, with a hierarchy of HRAEs influencing survival. Differential risk factors for bleeding and thrombotic complications exist and raise the possibility of a tailored approach to ECLS management.
OBJECTIVES: This study sought to determine the frequency, incidence rates over time, association with mortality, and potential risk factors for hemocompatibility-related adverse events (HRAEs) occurring during venoarterial-extracorporeal life support (VA-ECLS). BACKGROUND: HRAEs are common complications of VA-ECLS. Studies examining relevant clinical predictors and the association of HRAEs with survival are limited by small sample size and single-center setting. METHODS: We queried adult patients supported with VA-ECLS from 2010 to 2017 in the Extracorporeal Life Support Organization database to assess the impact of HRAEs on in-hospital mortality. RESULTS: Among 11,984 adults meeting study inclusion, 8,457 HRAEs occurred; 62.1% were bleeding events. The HRAE rate decreased significantly over the study period (p trend <0.001), but rates of medical bleeding and ischemic stroke remained stable. HRAEs had a cumulative association with mortality in adjusted analysis: 1 event, odds ratio (OR) of 1.43; 2 events, OR of 1.86; ≥3 events, OR of 3.27 (p < 0.001 for all). HRAEs most strongly associated with mortality were medical bleeding, including intracranial (OR: 7.71), pulmonary (OR: 3.08), and gastrointestinal (OR: 1.95) hemorrhage and ischemic stroke (OR: 2.31); p < 0.001 for all. Risk factors included the following: for bleeding: older age, lower pH, and female sex; for thrombosis: younger age, male sex, Asian race, and non-polymethylpentene oxygenator; and for both: time on ECLS, central cannulation, and renal failure. CONCLUSIONS: Although decreasing, HRAEs remain common during VA-ECLS and have a cumulative association with survival. Bleeding events are twice as common as thrombotic events, with a hierarchy of HRAEs influencing survival. Differential risk factors for bleeding and thrombotic complications exist and raise the possibility of a tailored approach to ECLS management.
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