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 [PMID: 34368307 DOI: 10.12998/wjcc.v9.i21.5889]
Corresponding Author of This Article
Ke-Jian Qian, MD, PhD, Full Professor, Department of Intensive Care Medicine, First Affiliated Hospital of Nanchang University, No. 17 Yongwaizheng Road, Nanchang 330006, Jiangxi Province, China. ndyfyicu@email.ncu.edu.cn
Research Domain of This Article
Radiology, Nuclear Medicine & Medical Imaging
Article-Type of This Article
Observational Study
Open-Access Policy of This Article
This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
World J Clin Cases. Jul 26, 2021; 9(21): 5889-5899 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