DIFFERENTIATING TESTICULAR TORSION FROM ORCHITIS USING NON-CONTACT INFRARED THERMOMETER: A PROSPECTIVE, RANDOMIZED, BLINDED, ANIMAL STUDY

DIFFERENTIATING TESTICULAR TORSION FROM ORCHITIS USING NON-CONTACT INFRARED THERMOMETER: A PROSPECTIVE, RANDOMIZED, BLINDED, ANIMAL STUDY
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Title:DIFFERENTIATING TESTICULAR TORSION FROM ORCHITIS USING NON-CONTACT INFRARED THERMOMETER: A PROSPECTIVE, RANDOMIZED, BLINDED, ANIMAL STUDY
Author/Abstract:
Marc J.S. Baviera, MD; Antonio L. Anastacio, MD; Kristine M. Malig, MD; Imelda M. Dizon, MD and Ma. Jesusa de Guzman, MD

Section of Urology, Department of Surgery, University of the East Ramon Magsaysay Memorial Medical Center

Objective: The aim of this study was to differentiate testicular torsion from orchitis using noncontact infrared thermometer. Materials and Methods: This was a prospective blinded animal study involving 21 rabbits assigned into 3 groups. The first group underwent ligation of one of their spermatic cords, the second group had one of their testicles inoculated with E. coli to stimulate orchitis, the third group acted as control. Individual testicular temperatures were taken using an infrared noncontact thermometer before and after spermatic cord ligation and testis inoculation. The observer taking the temperature was unaware of the underlying testicular pathology. The control group underwent scrotal thermometry only . Using the paired t-test, there was a significant temperature drop in the ligated testis compared to the nonligated side. Using the same test, there was significant temperature rise in the inoculated testis compared to the noninoculated testis. Results: By statistical analysis it was determined that a decrease in temperature between 1-1.8oC of the involved testis below the temperature of the opposite testis would favor testicular torsion, and a rise in temperature between 1.1-2.2oC in the involved testis over the temperature of the opposite testis would favor a diagnosis of orchitis. Conclusion: Based on this study, scrotal non-contact infrared thermometry can differentiate between testicular torsion and orchitis. This merits further study in human subjects correlating infrared thermometer findings with the actual intraoperative findings.

Key words: torsion, orchitis, infrared thermometer.W ֲ�

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