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Table 4 Comparison of electrocardiogram variables according to in-hospital mortality within 48 h between the isolated TBI and combined TBI groups

From: Role of electrocardiogram findings in predicting 48-h mortality in patients with traumatic brain injury

Variables

Isolated TBI (N = 776)

Combined TBI (N = 248)

Survivors (n = 715)

Non-survivors (n = 61)

P

Survivors (n = 220)

Non-survivors (n = 28)

P

PR, ms

166 (152–188)

162 (138–176)

0.010

152 (136–172)

138 (132–172)

0.080

PR prolongation, n (%)

114 (15.9)

8 (13.1)

0.690

20 (9.1)

1 (3.6)

0.530

QRS, ms

92 (86–102)

92 (82–102)

0.342

89 (82–100)

91 (83–117)

0.272

QRS widening, n (%)

50 (7.0)

7 (11.5)

0.302

14 (6.4)

6 (21.4)

0.017

QTc, ms

458 (438–480)

476 (454–513)

< 0.001

462 (444–482)

484 (466–511)

0.002

QTc prolongation, n (%)

180 (25.2)

28 (45.9)

< 0.001

65 (29.5)

15 (53.6)

0.019

Presence of STE, n (%)

55 (7.7)

9 (14.8)

0.093

16 (7.3)

4 (14.3)

0.360

Presence of STD, n (%)

85 (11.9)

30 (49.2)

< 0.001

23 (10.5)

20 (71.4)

<  0.001

  1. TBI traumatic brain injury, STE ST-segment elevation, STD ST-segment depression