The impact of hypothermia on dilutional coagulopathy

K. D. Gubler, L. M. Gentilello, S. A. Hassantash, R. V. Maier, R. L. Reed

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131 Scopus citations


The control of hemorrhage in hypothermic patients with platelet and clotting factor depletion is often impossible. Determining the cause of coagulopathic bleeding (CB) will enable physicians to appropriately focus on rewarming, clotting factor repletion, or both. Objective: To determine the contribution of hypothermia in producing CB and ascertain if simultaneous hypothermia and dilutional coagulopathy (DC) interact synergistically. Method: Prothrombin time, partial thromboplastin time, and platelet function were determined at assay temperatures of 29° to 37°C on normal and critically ill, noncoagulopathic (NC) individuals. Dilutional coagulopathy was created using buffered saline and the assays repeated. Results: Hypothermic assay at ≤35°C significantly prolonged coagulation times. The effect of hypothermia on NC and DC samples was not different. Conclusion: Assays performed at 37°C underestimate coagulopathy in hypothermic patients. The effect of hypothermia on NC and DC is not different, indicating the lack of a synergistic effect. Normalization of clotting requires both rewarming and clotting factor repletion.

Original languageEnglish (US)
Pages (from-to)847-851
Number of pages5
JournalJournal of Trauma
Issue number6
Publication statusPublished - 1994


ASJC Scopus subject areas

  • Surgery

Cite this

Gubler, K. D., Gentilello, L. M., Hassantash, S. A., Maier, R. V., & Reed, R. L. (1994). The impact of hypothermia on dilutional coagulopathy. Journal of Trauma, 36(6), 847-851.