2011 Fiscal Year Final Research Report

Changes in the pelvic floor muscle function during pregnancy-Comparison between normal pregnant women and pregnant women with cervical incompetence-

Research Project

Project/Area Number	21592821
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	Lifelong developmental nursing
Research Institution	Yamanashi Prefectural University
Principal Investigator	NATORI Hatsumi 山梨県立大学, 看護学部, 准教授 (10347370)
Co-Investigator(Kenkyū-buntansha)	HIRATA Yoshie 山梨県立大学, 看護学部, 講師 (50326097)
Project Period (FY)	2009 – 2011
Keywords	母性 / 女性看護学
Research Abstract	In normal pregnant women, pelvic floor muscles relax during the course of the pregnancy, but the force of contraction is maintained. Meanwhile, it could be that in the first trimester pelvic floor muscles of pregnant women with cervical incompetence are already more relaxed than those of normal pregnant women. There were differences in the force of pelvic floor muscle during the second trimester, but no significant differences in the state of pelvic floor muscle at 36 weeks of gestation or later between two groups. During pregnancy, hormones allow the cartilage of the pubic symphysis and ligaments of the sacro-iliac joint to become slightly flexible, causing the birth canal to dilate. This study suggested that widening of the pelvis associated with pregnancy is a phenomenon that occurs regardless of the presence or absence of abnormality during the course of the pregnancy, because of no significant differences between two groups.

(3 results)