International journal of obstetric anesthesia
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Int J Obstet Anesth · Jan 2012
Randomized Controlled Trial Comparative StudyA prospective controlled study of continuous spinal analgesia versus repeat epidural analgesia after accidental dural puncture in labour.
After accidental dural puncture in labour it is suggested that inserting an intrathecal catheter and converting to spinal analgesia reduces postdural puncture headache and epidural blood patch rates. This treatment has never been tested in a controlled manner. ⋯ Converting to spinal analgesia after accidental dural puncture did not reduce the incidence of headache or blood patch, but was associated with easier establishment of neuraxial analgesia for labour. The most significant factor increasing headache and blood patch rates was the use of a 16-gauge compared to an 18-gauge epidural needle.
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Int J Obstet Anesth · Jan 2012
Effect of μ-opioid receptor A118G polymorphism on the ED50 of epidural sufentanil for labor analgesia.
A common polymorphism of the μ-opioid receptor gene (OPRM1, p.118A/G), which has been shown to effect the response to neuraxial opioids, occurs in 30% of Caucasian women. This double-blind up-down sequential allocation study was designed to examine the effect of p.118A/G on the ED50 of epidural sufentanil for labor analgesia. ⋯ Women carrying the variant allele of p.118A/G of OPRM1 (G118) had a lower ED50 for epidural sufentanil given for early labor analgesia than women homozygous for the wild-type allele.