DIAGNOSTIC PERFORMANCE OF TRANSPERINEAL SONOGRAPHIC CERVICAL LENGTH MEASUREMENT FOR DIAGNOSIS OF PRETERM LABOR: A DIAGNOSTIC TEST STUDY

Jirada Promnimit M.d., Srisuda Songthamwat M.d., Ueamporn Summart . Ph.d, Metha Songthamwat M.d., Ph.d.

Abstract


OBJECTIVE: To evaluate the diagnostic performance of transperineal sonographic cervical length
measurement (TPS-CL) compare with transvaginal measurement (TVS-CL).
MATERIALS AND METHODS: The participants were 107 suspected preterm labor women whom cervical dilatation was < 3 cm.
TPS-CL and TVS-CL were measured. The short cervical length (CL) was diagnosed when CL < 3 cm. The diagnostic
performance of TPS-CL was evaluated.
RESULTS: Short CL (CL < 3cm) was found in 52.3% by TVS-CL and 51.4% by TPS-CL. TPS-CL had high correlation with TVS-CL
(r = 0.77). The sensitivity, specicity, positive and negative predictive value, and accuracy of TPS-CL were 78.6% (95%CI 65.6-
88.4), 78.4% (95%CI 64.7-88.7), 80.0% (95%CI 67.0- 89.6), 76.9%% (95%CI 63.2-87.5), 78.5 % (95%CI 69.5-85.9), respectively.
CONCLUSION: TPS-CL had high correlation with TVS-CL. In case of TVS-CL is unavailable, TPS-CL can be used for preterm
labor diagnosis


Keywords


Cervical Length, Suspected Preterm Labor, Transperineal Ultrasound, Transvaginal Ultrasound

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References


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