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Epidural analgesia is the most effective form of labor pain relief. Low doses of local anesthetic (freezing solutions) in combination with opioids (narcotics) are commonly used as epidural solutions to provide pain relief. Low dose local anesthetic solutions with opioids for labor have been shown to decrease motor block (leg weakness or temporary paralysis), without affecting labor pain relief. However, onset of pain relief can be delayed with these low dose solutions. The standard epidural solution used at Victoria Hospital is a low dose of local anesthetic called bupivacaine mixed with fentanyl, an opioid, for labor epidural pain relief.
There is some evidence that the addition of more fentanyl to the epidural bolus dose of bupivacaine at the start of labor epidural analgesia can speed onset of pain relief. Both medications are safe for you and your baby.
This study will investigate whether the addition of different doses of fentanyl (20 mcg, 50 mcg and 100 mcg) to the epidural bolus dose speeds onset of pain relief.
The study hypothesis is that the onset of epidural labor analgesia will be shortest with the larger fentanyl epidural bolus.
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105 participants in 3 patient groups
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Data sourced from clinicaltrials.gov
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