Clinical Study

Sexual Dimorphism in Hematocrit Response Following Red Blood Cell Transfusion of Critically Ill Surgical Patients

Table 1

Sample demographics.

Variable ( 𝑛 = 5 7 5 )Mean/ 𝑁 Range/%

Recipient characteristics
 Age (years)49.318–93
 Male gender39868.7%
 Admission diagnosis of trauma38466.3%
 Transfusion indication of ICU anemia52991.4%
 Admission weight (kg)82.240.8–185.0
 Admission BMI (kg/m2)27.916.8–66.3
 24 Hour fluid balance (L)2.1−5.6–55.9

Transfusion data
 Time from ICU admission to13.71–71
  transfusion (days)
 Hctpre (% points)21.510.2–32
 Tpre  (hours)3.31–7
 Tpost (hours)4.61–6
 pRBCs storage time (days)29.57–42
 Donor male gender28949.9%
 Additional blood products284.9%

Outcomes
 ΔHct (% points)3.1−7.0–16.9
 ICU LOS (days)27.41–111
 Recipient mortality11920.7%

ICU, intensive care unit; BMI, body mass index; pRBCs, packed red blood cells; LOS, length of stay.