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P32.05: Ultrasound monitoring of treatment efficiency in isthmico‐cervical incompetence

14 weeks of gestation using transvaginal ultrasonography. Particular attention was paid to differentiate the enodcervix from the isthmus. The distribution of the endocervical lengths was compared with existing publications. An experienced sonographer also classified all images according to the degree of difficulty in visualizing the endocervix. The association between echogenicity of endocervical mucosa, parity and degree of difficulty in measurement was analysed. Results: The median, 5th and 95th percentiles of the endocervix during first trimester were 3.32 cm, 2.45 cm and 4.58 cm, respectively and were similar to the data from recent publications. It was noted that the proportion of images rated as ‘‘difficult to visualize’’ was highest in women with hyperechoic mucosa, as well as those who are multiparous. However, this trend was not statistically significant. Conclusions: The measurement of the endocervical length described in the literature is reproducible in our local population producing similar statistical values and distribution to publication from Greco et al. Technically it seems more challenging to measure the endocervical length in those women with hyperechoic endocervical mucosa and in multiparous women.