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Instrumental rotational delivery in primiparae.
N C Gleeson1, S M Gormally, J J Morrison
1Rotunda Hospital, Dublin.
Irish Medical Journal
|December 1, 1992
Summary
Kjelland's forceps and vacuum delivery show similar vaginal birth rates in primiparae. Vacuum delivery is slower and linked to poorer infant outcomes, while forceps cause more maternal trauma.
Area of Science:
- Obstetrics and Gynecology
- Perinatal Medicine
Background:
- Instrumental rotational delivery is used for fetal distress or arrest of descent.
- Kjelland's forceps and vacuum extraction are common methods for rotational delivery.
Purpose of the Study:
- To compare the efficacy and safety of Kjelland's forceps versus vacuum delivery for rotational deliveries in primiparae.
- To evaluate outcomes including delivery rates, operative times, maternal pain, and neonatal well-being.
Main Methods:
- Analysis of 98 consecutive instrumental rotational deliveries of babies > 2,500 grams in primiparae.
- Comparison of Kjelland's forceps and vacuum delivery groups.
Main Results:
- Similar vaginal delivery rates (Kjelland's forceps 96%, vacuum 90%).
- Vacuum failure for rotation occurred in 14%, with 77% requiring subsequent forceps.
- Vacuum delivery took longer (P < 0.01); Kjelland's forceps resulted in higher puerperal pain scores.
- Neonatal outcomes: more frequent low Apgar scores and cord pH < 7.20 with vacuum (p < 0.05); Kjelland's forceps associated with more physical trauma.
- No perinatal deaths; equal incidence of asphyxial encephalopathy.
Conclusions:
- Both methods achieve similar vaginal delivery rates but differ in safety profiles.
- A selective approach to rotational vacuum and Kjelland's forceps use in primiparae is recommended.