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. 2014 Mar 27:2014:124206.
doi: 10.1155/2014/124206. eCollection 2014.

Perineal Distensibility Using Epi-no in Twin Pregnancies: Comparative Study with Singleton Pregnancies

Juliana Sayuri Kubotani  1 , Antonio Fernandes Moron  1 , Edward Araujo Júnior  1 , Miriam Raquel Diniz Zanetti  1 , Vanessa Cardoso Marques Soares  1 , Julio Elito Júnior  1
Affiliations

Perineal Distensibility Using Epi-no in Twin Pregnancies: Comparative Study with Singleton Pregnancies

Juliana Sayuri Kubotani et al. ISRN Obstet Gynecol. .

Abstract

The aims of this study were to compare perineal distensibility between women with twin and singleton pregnancies and to correlate these women's perineal distensibility with anthropometric data. This prospective cross-sectional case-control study was conducted among nulliparous women, of whom 20 were pregnant with twins and 23 with a single fetus. Perineal distensibility was evaluated in the third trimester by means of Epi-no, which was introduced into the vagina and inflated up to the maximum tolerable limit. It was then withdrawn while inflated and its circumference was measured. The unpaired Student's t-test was used to compare perineal distensibility in the two groups and Pearson's correlation coefficient (r) was used to correlate the pregnant women's perineal distensibility with their anthropometric data. There was no difference in perineal distensibility between the twin group (16.51 ± 2.05 cm) and singleton group (16.13 ± 1.67 cm) (P = 0.50). There was a positive correlation between perineal distensibility and abdominal circumference (r = 0.36; P = 0.01). The greater the abdominal circumference was, the greater the perineal distensibility was, regardless of whether the pregnancy was twin or singleton.

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Figures

Figure 1
Figure 1
Graphical representation of the positive correlation between abdominal circumference (ABD) and measurements on the Epi-no balloon circumference.
See this image and copyright information in PMC

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