• Moti Klein, Lior Hassan, Yair Binyamin, Dmitry Frank, Matthew Boyko, Alexander Zlotnik, Tehila Raab, Victor Novack, and Amit Frenkel.
• General Intensive Care Unit, Soroka University Medical Center, and The Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel.
• Shock. 2023 Jun 1; 59 (6): 877881877-881.

AbstractBackground : Critically ill patients with sepsis often require packed cell transfusions (PCTs). Packed cell transfusion causes changes in body's core temperature. Objective : To trace the course and amplitude of body core temperature after PCT in adults with sepsis. Methods : We conducted a population-based retrospective cohort study of patients with sepsis who received one unit of PCT during their hospitalization in a general intensive care unit during 2000-2019. A control group was established by matching each of these patients to a patient who did not receive PCT. We calculated the mean values of urinary bladder temperature for the 24 h before and 24 h after PCT. To evaluate the effect of PCT on body core temperature, multivariable analyses using a mixed linear regression model were performed. Results : The study comprised 1,100 patients who received one unit of PCT and 1,100 matched patients. The mean temperature before PCT was 37.3°C. Immediately from initiation of PCT, body temperature decreased, to a minimum of 37.0°C. During the 24 subsequent hours, the temperature increased gradually and consistently, until a peak temperature of 37.4°C. In a linear regression model, body core temperature increased by a mean 0.06°C in the first 24 h after PCT and decreased by a mean 0.65°C for every 1.0°C increase before PCT. Conclusions : Among critically ill patients with sepsis, PCT itself causes only mild and clinically insignificant temperature changes. Thus, significant changes in core temperature during the 24 h after PCT may indicate an unusual clinical event that requires clinicians' immediate attention.Copyright © 2023 by the Shock Society.

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