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©The Author(s) 2021.
World J Clin Cases. Jul 26, 2021; 9(21): 5889-5899
Published online Jul 26, 2021. doi: 10.12998/wjcc.v9.i21.5889
Published online Jul 26, 2021. doi: 10.12998/wjcc.v9.i21.5889
Table 1 Clinical characteristics of patients included in our study
Characteristics | Value |
n | 45 |
Male | 28 (62) |
Age (yr) | 38 (21, 59) |
Weight (kg) | 63 (60, 70) |
Height (cm) | 16 (163, 175) |
Etiology for pneumothorax | |
Spontaneous pneumothorax | 16 (36) |
Trauma | 29 (64) |
Pneumothorax features | |
Left | 18 (40) |
Right | 27 (60) |
Table 2 Comparison of measurements obtained by tissue Doppler imaging between the pneumothorax and non-pneumothorax sides
Pneumothorax side, n = 45 | Non-pneumothorax side, n = 45 | P value | |
PVmax (cm/s) | 0.36 (0.23, 0.41) | 0.59 (0.38, 0.80) | < 0.001 |
PSmax (%) | 1.14 (0.41, 1.85) | 1.90 (1.30, 3.34) | 0.001 |
CVmax (cm/s) | 0.30 (0.15, 0.39) | 0.13 (0.09, 0.19) | < 0.001 |
CSmax (%) | 1.62 (1.16, 2.06) | 1.00 (0.71, 1.98) | 0.075 |
PVmax/CVmax | 1.06 (0.85, 1.53) | 4.93 (3.40, 7.52) | < 0.001 |
PSmax/CSmax | 0.76 (0.32, 1.05) | 1.74 (1.30, 2.66) | < 0.001 |
Table 3 The diagnostic performance of measurements obtained by tissue Doppler imaging in the diagnosis of pneumothorax
AUC | P value | Cut-off value | Sensitivity | Specificity | PLR | NLR | PPV | NPV | |
PVmax (cm/s) | 0.84 (0.75, 0.92) | < 0.001 | 0.50 | 96% | 62% | 2.53 | 0.07 | 0.72 | 0.93 |
PSmax (%) | 0.72 (0.62, 0.83) | < 0.001 | 0.94 | 47% | 91% | 5.25 | 0.84 | 0.84 | 0.63 |
PVmax/CVmax | 0.99 (0.96, 1.00) | < 0.001 | 1.96 | 93% | 96% | 21.00 | 0.07 | 0.95 | 0.93 |
PSmax/CSmax | 0.91 (0.84, 0.97) | < 0.001 | 1.12 | 82% | 93% | 12.33 | 0.19 | 0.93 | 0.84 |
Table 4 Variability of tissue Doppler imaging measurements
PVmax | CVmax | PSmax | CSmax | |
Senior physician | ||||
Pneumothorax | 0.87 (0.78, 0.93) | 0.85 (0.73, 0.91) | 0.84 (0.72, 0.91) | 0.88 (0.79, 0.93) |
Non-pneumothorax | 0.88 (0.79, 0.93) | 0.82 (0.59, 0.92) | 0.85 (0.75, 0.92) | 0.86 (0.77, 0.92) |
Resident | ||||
Pneumothorax | 0.75 (0.59, 0.87) | 0.67 (0.47, 0.81) | 0.64 (0.43, 0.79) | 0.72 (0.48, 0.85) |
Non-pneumothorax | 0.79 (0.64, 0.88) | 0.75 (0.48, 0.87) | 0.72 (0.54, 0.84) | 0.75 (0.59, 0.86) |
Total | ||||
Pneumothorax | 0.77 (0.65, 0.85) | 0.73 (0.60, 0.83) | 0.68 (0.54, 0.80) | 0.80 (0.69, 0.89) |
Non-pneumothorax | 0.80 (0.69, 0.87) | 0.75 (0.62, 0.85) | 0.76 (0.64, 0.85) | 0.74 (0.62, 0.84) |
- Citation: Xiao R, Shao Q, Zhao N, Liu F, Qian KJ. Quantification analysis of pleural line movement for the diagnosis of pneumothorax. World J Clin Cases 2021; 9(21): 5889-5899
- URL: https://www.wjgnet.com/2307-8960/full/v9/i21/5889.htm
- DOI: https://dx.doi.org/10.12998/wjcc.v9.i21.5889