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Characteristics of uterine activity in nulliparous labour
Article first published online: 23 AUG 2005
DOI: 10.1111/j.1471-0528.1984.tb04756.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 91, Issue 3, pages 220–227, March 1984
Additional Information
How to Cite
GIBB, D. M. F., ARULKUMARAN, S., LUN, K. C. and RATNAM, S. S. (1984), Characteristics of uterine activity in nulliparous labour. BJOG: An International Journal of Obstetrics & Gynaecology, 91: 220–227. doi: 10.1111/j.1471-0528.1984.tb04756.x
Publication History
- Issue published online: 23 AUG 2005
- Article first published online: 23 AUG 2005
- Received 7 February 1983 Accepted 10 July 1983
- Abstract
- References
- Cited By
Summary. Uterine activity was studied in 40 nulliparous Chinese women who were in normal labour and had a normal delivery. A catheter-tip pressure transducer coupled with a uterine activity integrator was used to observe and quantify uterine activity. Normal labour progress was defined as labour progressing within 2 h to the right of a line drawn at 1 cm/h in the active phase. A wide range of uterine activity was recorded with varying degrees of co-ordination. The minimum level of uterine activity likely to be associated with labour progress was 650 kPas/15 min at 3 cm cervical dilatation. The median level in the active phase of normal labour was 1440 kPas/15 min. There was a strong correlation between measurements in kPas/15 min and Montevideo units/15 min (r= 0.71, P
0.001). No significant increase was found in basal tone.