Pruritus
Conditions
Keywords
Pruritus
Brief summary
The primary objectives of this study are to compare the efficacy of pain relief between epidural oxycodone and epidural morphine for postoperative analgesia after elective caesarean section and to compare the incidence and severity of pruritus. Secondary objectives are to compare other side effects of epidural administered oxycodone and morphine (nausea and vomiting, sedation, respiratory depression) and to investigate the safety and efficacy of epidural oxycodone and epidural morphine after use for postoperative analgesia in caesarean sections.
Detailed description
Undesirable side effects such as pruritus and nausea are common with epidural morphine and are thought to be due to mu-opioid receptor stimulation at the supra-spinal level. Recent studies of epidural oxycodone for abdominal and gynaecological surgery have shown that it is as effective as morphine with fewer side effects by this route. This has not been established in patients undergoing caesarean section. Oxycodone is a semi-synthetic opioid derivative that resembles morphine structurally and has similar lipid solubility. It has been reported that the analgesic action of oxycodone is more rapid in onset when compared with morphine and is mediated by kappa-opioid receptors in the spinal cord. The significance of our study would be to establish that epidural oxycodone reduces the side effects of pruritus of epidural morphine whilst still maintaining similar analgesia.
Interventions
DRUGOpioid administration oxycodone
Epidural administration single dose through epidural catheter
DRUGOpioid administration morphine
Sponsors
KK Women's and Children's Hospital
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Outcomes Assessor)
Eligibility
Sex/Gender
FEMALE
Age
21 Years to 50 Years
Healthy volunteers
No
Inclusion criteria
* American Society of Anesthesiologists (ASA) physical status 1-2, * aged between 21 to 50 years undergoing a term elective caesarean section and * had consented for combined spinal-epidural (CSE) anaesthesia
Exclusion criteria
* concurrent opioid therapy, * contraindications to CSE anaesthesia or any of the study medications, * a history of pre-existing nausea and vomiting, * failure to identify intrathecal space at time of anaesthesia, * inadvertent dural puncture with the epidural needle and * conversion of regional anaesthesia to general anaesthesia
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Pruritus | 1 day | Incidence of pruritus at 24 hours |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Pain | 1 day | Pain score at 24 hours on using 0 to 10 scale |
| Nausea and Vomiting | 1 day | Incidence of Nausea and Vomiting at 24 hours |
Countries
Singapore
Contacts
PRINCIPAL_INVESTIGATORBan L Sng, FANZCA
KK Women's and Children's Hospital
Outcome results
None listed