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Table 1 Demographic and clinical characteristics by presence of abnormal traditional vital signs (TVS) and elevated venous lactate*

From: A retrospective analysis of geriatric trauma patients: venous lactate is a better predictor of mortality than traditional vital signs

Variable, % (n)

Abnormal TVS (n=93)†

Lactate ≥ 2.5 mM (n=332)

missing (n)

Abnormal TVS†

100 (93)

9.64 (32)

16

Lactate ≥ 2.5 mM

39.02 (32)

100 (332)

489

Mortality

13.98 (13)

12.05 (40)

0

Blunt mechanism

96.74 (89)

97.89 (325)

10

Female gender

49.46 (46)

48.49 (161)

0

Advanced age ≥ 85

20.43 (19)

25.30 (84)

0

ISS ≥ 16

38.89 (35)

27.58 (91)

29

GCS 3 - 8

22.58 (21)

15.06 (50)

27

Respiratory rate < 10 or > 29

6.82 (6)

3.79 (12)

62

Trauma team activation

53.76 (50)

40.66 (135)

0

Cause

  

0

  Fall

65.59 (61)

64.16 (213)

 

  Motor vehicle

23.66 (22)

23.49 (78)

 

ED disposition:

  

7

  Intensive care unit

37.63 (35)

47.29 (157)

 

  Floor

31.18 (29)

35.24 (117)

 

Discharge disposition:

  

1

LTAC/SNF/rehabilitation

65.59 (61)

46.69 (155)

 

  Home

17.20 (16)

33.73 (112)

 
  1. ISS, injury severity score; GCS, glasgow coma scale; ED, emergency department; LTAC, long term acute care; SNF, skilled nursing facility.
  2. *There were 11 patients who had both abnormal TVS and elevated venous lactate.
  3. †Abnormal TVS: Systolic blood pressure < 90 mm Hg and/or heart rate > 120 beats/min.