New diagnostic criteria for inguinal hernia based on ultrasound examination

Karami, Mehdi . and Mahmoodieh, Mohsen . and Assarzadegan, Masood . and Karami, Fatemeh . and Assarzadegan, Naziheh. and Mansoori, Marzieh . and Rabiei, Elham . (2013) New diagnostic criteria for inguinal hernia based on ultrasound examination. Journal of Isfahan Medical School, 30 (222). pp. 2537-2544.

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Abstract

Background: According to increasing use of ultrasound in the diagnosis of inguinal herniation, this study was designed to evaluate the cross-sectional area of the inguinal canal in patients with inguinal herniation and its increase with Valsalva maneuver. We also compared the obtained values with those of normal population. Methods: a cross-sectional study, 52 normal persons and 35 cases with inguinal hernia were assessed. The cross-sectional area of the inguinal canal was measured in all subjects and data was analyzed using Student's t-test and Pearson's correlation tests in SPSS. Receiver operator characteristic (ROC) curves were traced to define cut-off points. Findings: Valsalva maneuver caused significantly greater increase in the cross-sectional area of the inguinal canal among patients than in the normal group. The cut-off point of the cross-sectional area of inguinal canal was 63.5 mm2 in neutral state and 72.5 mm2 with Valsalva maneuver (increase rate: 34 mm2). In the absence of Valsalva maneuver, a cross-sectional area of the inguinal canal of greater than 63.5 mm2 is predictive of inguinal hernia (with 91 sensitivity and 98 specificity). Otherwise, values greater than 72.5 mm2 will be predictive of inguinal hernia (with 100 sensitivity and 98 specificity). Inguinal hernia will also be suspected if Valsalva maneuver increases the cross-sectional area of the inguinal canal by more than 34 mm2 (with 91 sensitivity and 100 specificity). Conclusion: The following diagnostic criteria are suggested for diagnosis of inguinal hernia through ultrasound examination: the presence of bowel loop within the inguinal canal, a cross-sectional area of the inguinal canal > 63.5 mm2 without Valsalva maneuver and > 72.5 mm2 with Valsalva maneuver, an increase of > 34 mm2 in the cross-sectional area of the inguinal canal with Valsalva maneuver, and a > 0.5 cm movement of the spermatic cord with Valsalva maneuver.

Item Type: Article
Additional Information: cited By 0
Uncontrolled Keywords: Inguinal canal, Inguinal hernia, Ultrasound
Subjects: WN Radiology . Diagnostic Imaging
Divisions: Faculty of Medicine > School of Medicine
Depositing User: zahra bagheri .
Date Deposited: 09 Aug 2017 04:54
Last Modified: 31 Jan 2018 06:40
URI: http://eprints.skums.ac.ir/id/eprint/2738

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