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Table 2 Shock-related index between patients with and without massive transfusion in elderly trauma patients

From: The impact of age and receipt antihypertensives to systolic blood pressure and shock index at injury scene and in the emergency department to predict massive transfusion in trauma patients

  Overall elderly
(n = 1949)
Non–MT
(n = 1893)
MT
(n = 56)
P value
Age (IQR), yr 76.0 (70.0–81.0) 76.0 (70.0–81.0) 76.0 (70.0–82.5) 0.766
Male sex, n (%) 1002 (51.4) 964 (50.9) 38 (67.9) 0.012
Taking antihypertensives, n(%) 998 (51.2) 979 (51.7) 19 (33.9) 0.009
Shock-related Index categories
  At injury scene (prehospital)
  SBP (IQR), mmHg 140.0 (121.0–160.0) 140.0 (120.0–160.0) 100.0 (100.0–120.0) < 0.001
  SI (IQR) 0.59 (0.51–0.71) 0.59 (0.51–0.69) 0.83 (0.65–0.90) 0.001
 SBP category, n (%) < 0.001
  > 110 mmHg 1768 (90.6) 1742 (92.0) 27 (47.4)  
  90–110 mmHg 149 (7.7) 125 (6.6) 24 (42.1)  
  < 90 mmHg 33 (1.6) 27 (1.4) 6 (10.5)  
 SI category, n (%) < 0.001
  < 0.7 1443 (73.9) 1422 (75.1) 21 (36.8)  
  0.7–1.0 420 (21.7) 394 (20.8) 27 (47.4)  
  > 1.0 86 (4.4) 78 (4.1) 9 (15.8)  
At  ED arrival
  SBP (IQR), mmHg 147.0 (124.0–165.0) 151.0 (129.0–171.0) 88.0 (80.0–103.0) < 0.001
  SI (IQR) 0.57 (0.47–0.69) 0.55 (0.46–0.67) 0.94 (0.87–1.06) < 0.001
 SBP category, n (%) < 0.001
  > 110 mmHg 1692 (86.8) 1670 (88.2) 22 (38.9)  
  90–110 mmHg 172 (8.8) 168 (8.9) 4 (7.4)  
  < 90 mmHg 85 (4.3) 55 (2.9) 30 (53.7)  
 SI category, n (%) < 0.001
  < 0.7 1468 (75.4) 1459 (77.1) 9 (16.7)  
  0.7–1.0 372 (19.1) 354 (18.7) 18 (31.5)  
  > 1.0 109 (5.5) 80 (4.2) 29 (51.9)  
 GCS, n (%) < 0.001
  > 12 1778 (91.3) 1750 (92.3) 28 (50.0)  
  9–12 68 (3.5) 62 (3.3) 6 (11.4)  
  < 9 103 (5.1) 81 (4.3) 22 (38.6) < 0.001
 Injury severity score, n (%) < 0.001
   < 16 1482 (76.0) 1473 (77.8) 9 (16.1)  
  16–24 292 (15.0) 267 (14.1) 25 (44.6)  
   > 24 175 (9.0) 153 (8.1) 22 (39.3)  
 30-day mortality, n (%) 149 (7.6) 121 (6.4) 28 (50.0) < 0.001
  1. IQR denotes interquartile range
  2. ED emergency department, GCS glasgow coma scale, SBP systolic blood pressure, SI shock index