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Table 5 Anatomical characteristic of non-invasive wounds and invasive thoracic wounds.

From: Performance of pre-hospital evaluations in ruling out invasive chest stab wounds

 

Thoracic IW (n=89)

No thoracic IW (n=166)

p

Blowing wound/SE, n (%)

16(18)

1(0.6)

<0.01a

Hemorrhagic wound, n (%)

14(16)

10(6)

1b

Wound size, med[IQR]

2[1-3]

1[1.5-3]

0.81c

Wound location

 Cardiac box, n (%)

50(56)

112(67)

0.07b

 Thoracoabdominal zone, n (%)

43(52)

86(52)

0.59b

 Supraclavicular zone, n (%)

3(3)

4(2.5)

0.65a

 Lateral zone, n (%)

36(40)

53(32)

0.17b

 Posterior wound, n (%)

19(21)

59(36)

0.03b

  1. Definition: IW= Invasive Wound; SE: Subcutaneous Emphysema; IQR=Interquartiel Range 25-75%. Statistical tests: a = Fisher's exact test; b = Chi squar test; c = Mann-Withney U-test.