Thromboelastography-Guided Anticoagulation in Critically Ill COVID-19 Patients: Mortality and Bleeding Outcomes

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Abstract
Hypercoagulability in COVID-19 patients was associated with increased mortality risk during the pandemic. This retrospective, observational study investigated whether the use of a thromboelastography (TEG)-guided anticoagulation protocol could decrease death and bleeding in critically ill COVID-19 patients. A TEG-guided protocol was instituted in one of two intensive care units. Primary outcomes of composite scores were the following: (0) major bleed and death; (1) death without major bleed; (2) major bleed without death; and (3) no bleed or death. Out of 134 patients, 67 in the TEG group were propensity matched to 67 in the comparator group based on age, gender, body mass index, presence of chronic kidney disease, cardiovascular disease, diabetes, and duration of non-invasive ventilation. There were no significant differences in rates of composite outcomes of bleeding or death in patients managed with or without a TEG-guided protocol (p = 0.22, Bowker symmetry testing). Out of the 67 patients in the TEG group, the TEG protocol led to anticoagulation change in 26 patients. Death was lower in this TEG-changed group (54%) compared to the comparator group (81%), although not significant (p = 0.07). TEG-guided protocol use did not reduce composite outcomes of death and bleeding, Future studies may further elucidate potential benefits.

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