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Paracervical block--a viable alternative for labor pain relief?
P Ranta1, P Jouppila, M Spalding
1Department of Anesthesiology, Oulu University Central Hospital, Finland.
Acta Obstetricia Et Gynecologica Scandinavica
|February 1, 1995
Summary
A low-dose paracervical block (PCB) effectively reduced labor pain in parturients. While generally safe, a small incidence of fetal bradycardia was observed, though all newborns were healthy.
Area of Science:
- Obstetrics and Gynecology
- Pain Management
- Anesthesiology
Background:
- Prospective study of 248 deliveries utilizing a 0.25% bupivacaine paracervical block (PCB) with superficial injection.
- Exclusion of parturients with signs of fetal distress.
- Evaluation of maternal, fetal, and neonatal effects of PCB.
Purpose of the Study:
- To assess the efficacy of a low-dose superficial paracervical block in pain relief during labor.
- To evaluate the maternal, fetal, and neonatal side-effects associated with this analgesic technique.
Main Methods:
- Pain intensity assessed using a visual analog scale (0-10).
- Intrapartum fetal heart rate patterns monitored and reviewed.
- Correlation of PCB with incidence of fetal bradycardia.
Main Results:
- Significant reduction in pain levels (p < 0.001) maintained until the second stage of labor.
- Fetal bradycardia observed in 2.0% of cases (5 fetuses), with heart rates between 60-105 bpm.
- Bradycardia episodes lasted 4-12 minutes; all affected newborns were delivered vaginally without asphyxia.
Conclusions:
- Low-dose superficial PCB is an effective analgesic for selected parturients during labor.
- Minimal fetal and neonatal side-effects were noted.
- Post-blockade fetal bradycardia is a possible complication that cannot be entirely eliminated.