Effects of analgesia on labor

Teresa Grace Berg, W. F. Rayburn

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Uterine activity may be defined in terms of the frequency of contractions of the uterus and the pressure generated by these contractions. Most studies that report an effect of analgesia on labor are retrospective, and, if prospective, are nonrandomized. Drug effects on uterine activity and labor progress are probably dose related, but are also influenced by a myriad of other factors including, but not limited to, the mother's emotional state, degree of cervical change, uterine contractility pattern, phase of labor, and individual differences in pharmacokinetics and drug sensitivity. The latest phase of labor may be prolonged by excessive narcotic or inappropriate timing of regional analgesia. The normal active phase tends to be resistant to the inhibitory effects of the usual amount of any analgesia. A brief period of decreased uterine activity often follows institution of analgesia. This may effectually accelerate labor in some patients by decreasing maternal anxiety and serum concentrations of catecholamines. A combination of sedation epidural blockade, and subsequent oxytocin use may prove effective in correcting a dysfunctional or hyperstimulatory pattern during the active phase. The second stage of labor may be slightly prolonged by effective epidural analgesia, but this delay is not necessarily harmful as long as the fetal heart rate tracing is normal, maternal hydration is adequate, and maternal pain relief is sufficient.

Original languageEnglish (US)
Pages (from-to)457-463
Number of pages7
JournalClinical obstetrics and gynecology
Volume35
Issue number3
DOIs
StatePublished - Jan 1 1992

Fingerprint

Analgesia
Mothers
Second Labor Stage
Fetal Heart Rate
Epidural Analgesia
Narcotics
Oxytocin
Individuality
Pharmaceutical Preparations
Uterus
Catecholamines
Anxiety
Pharmacokinetics
Pressure
Pain
Serum

ASJC Scopus subject areas

  • Obstetrics and Gynecology

Cite this

Effects of analgesia on labor. / Berg, Teresa Grace; Rayburn, W. F.

In: Clinical obstetrics and gynecology, Vol. 35, No. 3, 01.01.1992, p. 457-463.

Research output: Contribution to journalArticle

Berg, Teresa Grace ; Rayburn, W. F. / Effects of analgesia on labor. In: Clinical obstetrics and gynecology. 1992 ; Vol. 35, No. 3. pp. 457-463.
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