Diagnostic value of ultrasound for identification of nasal fracture

AUTHORS

Nazanin Farshchian 1 , * , Nikzad Farshchian 2 , Firoozeh Farshchian 3 , Farid Najafi 4

1 Dept. of Radiology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran

2 Dept. of ENT, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran

3 Student Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran

4 Dept. of Biostatistics and Epidemiology, School of Health, Kermanshah Health Research Center (KHRC), Kermanshah University of Medical Sciences, Kermanshah, Iran

How to Cite: Farshchian N, Farshchian N, Farshchian F, Najafi F. Diagnostic value of ultrasound for identification of nasal fracture, J Kermanshah Univ Med Sci. 2011 ; 15(3):e79355.

ARTICLE INFORMATION

Journal of Kermanshah University of Medical Sciences: 15 (3); e79355
Published Online: September 19, 2011
Article Type: Research Article
Received: May 07, 2010
Accepted: October 12, 2010

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Abstract

Background: Nasal fracture is a common fracture due to trauma. Gold standard method in diagnosis of nasal fracture is clinical examination and radiography is used in legal situation. Recently, ultrasound is recommended as a noninvasive and simple method in diagnosis of nasal fracture. This study investigates the role of ultrasound in diagnosis of nasal fracture.

Methods: 126 cases with suspected nasal fracture were evaluated using both ultrasound and nasal radiography in compare with clinical examination as a gold standard and the results were evaluated statistically. Sensitivity, specificity, negative predictive value and positive predictive value, negative likelihood ratio and positive likelihood ratio were calculated with confidence interval 95%.  Accuracy of both methods was also evaluated.

Results: In clinical examination 111 cases (88.1%) out of 126 cases, were diagnosed fractured and 15cases (11.9%) were unfractured. From these 111 fracture cases, 108 cases in ultrasound and 92 in radiography evaluation were also diagnosed fractured. Ultrasound sensitivity, specificity and   accuracy in diagnosis of nasal fracture were; 96.4% (91.1-98.6), 93.3% (70.2-98.8) and 96% respectively. Radiography report showed sensitivity   81.1% (72.8-87.3%), specificity 86.7% (62.1-96.3%) and accuracy of 82%. Most sensitivity of both methods was in diagnosis of nasal dorsum fracture (100% in ultrasound and 92.6% in radiography). Most specificity of ultrasound was in diagnosis of lateral wall (100%) and in radiography was in diagnosis of nasal dorsum fractures (50%).

Conclusion: According to this findings ultrasound can used as a noninvasive method with high sensitivity and specificity to diagnosis of nasal fracture.

Keywords

nasal fracture ultrasound specificity sensitivity radiography

© 2011, Journal of Kermanshah University of Medical Sciences. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/) which permits copy and redistribute the material just in noncommercial usages, provided the original work is properly cited.

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