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The Egyptian Journal of Bronchology

Table 2 Comparison of the transtracheal ultrasonography (TUS) results with the continuous capnography waveform results

From: The diagnostic accuracy of an inclusive three-window ultrasonography assessment for the rapid authentication of endotracheal tube position in RICU

TUS results

Capnography results

Total

Tracheal positive

Esophageal negative

n

(%)

N

(%)

Tracheal (positive)

TP = 76

95.0%

FP = 2

10.0%

78

Esophageal (negative)

FN = 4

5.0%

TN = 18

90.0%

22

Total

80

20

100

  1. Data are expressed as number (%)
  2. TUS Tracheal ultrasonography, TP True positives, FP False positives, FN False negatives, TN True negatives
  3. Text in bold indicates p-values <0.001
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