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Table 2 Perioperative blood work versus C/T Ratio, TP and TI for patients for whom blood was cross matched for surgical procedures in Tikur Anbessa Specialized Hospital, December–February 2017/18(n = 406)

From: Efficiency of blood utilization in elective surgical patients

Variables Cross matched patients (n) Transfused patients (n) Cross matched units Transfused units C/T ratio TP TI
Hg in mg/dl
 ≥ 16 39 6 97 13 7.46 15.38 0.33
 12–16 251 25 553 54 10.24 9.96 0.22
 10–12 72 15 167 24 6.96 20.83 0.33
 7–10 35 12 67 21 3.19 34.29 0.60
 < 7 4 4 7 6 1.17 100.0 1.5
Education level of operating surgeon
 Consultant 306 52 698 101 6.91 16.99 0.33
 Fellow 22 4 46 6 7.67 18.18 0.27
 Senior resident 60 4 120 7 17.14 6.67 0.12
 Junior resident 17 2 34 4 8.50 11.76 0.24
Estimated blood loss (in ml)
 < 750 372 32 810 58 13.97 8.60 0.16
 750–1500 24 21 66 43 1.53 87.50 1.79
 1500–2000 8 8 20 17 1.18 1.00 2.13
 2000–3000 1 1 2 0 … . 1.00 0.00