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- Title
Cervical length at 31–34 weeks of gestation: transvaginal vs. transperineal ultrasonographic approach.
- Authors
Tsakiridis, Ioannis; Dagklis, Themistoklis; Mamopoulos, Apostolos; Gerede, Angeliki; Athanasiadis, Apostolos
- Abstract
Objectives: To investigate the correlation between transperineal (TP) and transvaginal (TV) ultrasonography in the measurement of cervical length (CL) in the third trimester of pregnancy. Methods: In this prospective study, CL measurements were conducted in women between 31 and 34 weeks of gestation by both the TP and TV approaches. A comparison of the measurements was made between the two techniques. The Pearson correlation coefficient, the paired samples t-test and Bland-Altman plot were used. Results: In total, 240 women participated in the study. The CL was successfully measured transvaginally in all cases and transperineally in 229 (95.4%) of the cases. The mean TV CL was 32.8 ± 8.2 mm and the mean TP CL was 32.5 ± 8.1 mm. In the 229 cases with paired measurements, the Pearson correlation coefficient was 0.964. No significant differences in mean CL were identified between the two methods (t = 1.805; P = 0.072). In the Bland-Altman plot, the difference between the paired means was 0.26 mm and the 95% tolerance interval for any given paired observation (TV CL–TP CL) was −4.05 to 4.57 mm. Conclusion: The findings of this study suggest that at 31–34 weeks of gestation the cervix can be visualized adequately by both the TV and TP sonography in about 95% of cases. The TP CL measurements demonstrate a close correlation with the TV measurements. TP ultrasound is a feasible alternative, especially in cases where the use of the vaginal transducer should be minimized or is not acceptable by women.
- Subjects
CERVIX uteri; STATISTICAL correlation; FETAL ultrasonic imaging; GESTATIONAL age; INFANT health services; LONGITUDINAL method; PERINEUM; THIRD trimester of pregnancy; T-test (Statistics); VAGINA; PREGNANCY
- Publication
Journal of Perinatal Medicine, 2019, Vol 47, Issue 8, p817
- ISSN
0300-5577
- Publication type
Article
- DOI
10.1515/jpm-2019-0139