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An analysis of uterine activity in spontaneous labour using a microcomputer
Article first published online: 19 AUG 2005
DOI: 10.1111/j.1471-0528.1988.tb06480.x
Issue
1471-0528/asset/cover.gif?v=1&s=b4e1d96c46e18c61210d584b63c13ee375cf562b "BJOG: An International Journal of Obstetrics & Gynaecology")
BJOG: An International Journal of Obstetrics & Gynaecology
Volume 95, Issue 1, pages 57–64, January 1988
Additional Information
How to Cite
FAIRLIE, F. M., PHILLIPS, G. F., ANDREWS, B. J. and CALDER, A. A. (1988), An analysis of uterine activity in spontaneous labour using a microcomputer. BJOG: An International Journal of Obstetrics & Gynaecology, 95: 57–64. doi: 10.1111/j.1471-0528.1988.tb06480.x
Publication History
- Issue published online: 19 AUG 2005
- Article first published online: 19 AUG 2005
- Received 24 July 1986, Resubmitted 18 February 1987, Accepted 28 July 1987
- Abstract
- References
- Cited By
Summary. A microcomputer was used to analyse uterine activity during spontaneous labour in 30 nulliparous and 30 parous patients. The intrauterine mean active pressure (MAP) in the nulliparous group was 1·51 kPa (SD 0·45) in the first stage and 2·71 kPa (SD 0·77) in the second stage. For the parous group, the MAP in the first stage was 1·22 kPa (SD 0·37) and in the second stage was 2·92 kPa (SD 0·98). A significant parity difference in MAP and contraction frequency was observed in the first stage but not in the second stage. Epidural analgesia did not appear to influence uterine activity in the first stage but was associated with a lower MAP, contraction frequency and intensity in the second stage. During the first stage, MAP increased by 21% in nulliparas and by 39% in multiparas. The rise in MAP was mainly due to an increase in contraction frequency.