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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT00553553
Other study ID # St. Vincent's Hospital Ireland
Secondary ID
Status Recruiting
Phase N/A
First received November 2, 2007
Last updated December 30, 2008
Start date September 2007
Est. completion date June 2008

Study information

Verified date December 2008
Source St Vincent's University Hospital, Ireland
Contact Debbie A. D'Oyley, MB BS
Phone +3531 2094262
Email doyleyda@aol.com
Is FDA regulated No
Health authority Ireland: Ministry of Health
Study type Interventional

Clinical Trial Summary

The patient population requiring hepatic resection can demonstrate an unpredictable risk of exhibiting peri-operative coagulopathy resulting either from the pre-operative hepatic pathophysiology or volume of parenchymal resection. Choice of analgesia can be severely limited.

Currently, the most commonly described use of combined remifentanil infusion and intrathecal morphine has been in fast-track cardiac surgery. To date, there are no published data describing its use in the context of major hepatobiliary where the investigators predict it may provide adequate analgesia with a lower rate of adverse effects over the first 24 hours after surgery.


Description:

Choice of analgesia in hepatic resection surgery can be severely limited. This can depend upon on the pre-operative hepatic pathophysiology or the extent of parenchymal resection, both of which will affect peri-operative hepatic function, capacity for drug handling and risk of coagulopathy. Use of IV morphine during hepatic resection can result in high plasma levels post-operatively due to a reduced rate of morphine metabolism, risking a higher rate of morbidity. However, this remains a mainstay of peri-operative analgesia in combination with controversial non-opioid supplementation (paracetamol, non-steroidal anti-inflammatory drugs).

This study compares the efficacy of IV morphine only versus a combination of pre-incisional intrathecal morphine and intra-operative IV remifentanil. Intrathecal morphine provides the mainstay of post-operative analgesia for 12-24 hours and remifentanil provides profound, titratable intra-operative analgesia until the delayed onset of the intrathecal morphine. We hypothesise that this combination might provide desirable intra-operative haemodynamic conditions and eliminate the post-operative additive effects of long-acting, intra-operative IV opioid and intrathecal morphine. Further, if the dose of intrathecal morphine is adequate, this would result in a low rate of post-operative analgesic supplementation and fewer side effects. The titratable dose range of remifentanil is limited to the lower range found to risk post-operative hyperalgesia.


Recruitment information / eligibility

Status Recruiting
Enrollment 45
Est. completion date June 2008
Est. primary completion date May 2008
Accepts healthy volunteers No
Gender Both
Age group 18 Years to 75 Years
Eligibility Inclusion Criteria:

- Adult

- ASA I, II or stable III

- Undergoing primary elective hepatic resection of < 50% predicted parenchymal resection

Exclusion Criteria:

- Previous major upper GI surgery:

- liver resection or transplant

- gastrectomy

- oesophagectomy

- Whipple's procedure

- Contraindications to dural puncture:

- coagulopathy

- uncorrected anti-coagulant therapy

- spinal deformity

- neurological disorder

- psychiatric disorder

- Morphine allergy

- Co-morbidity predisposing to failure of extubation at conclusion of surgery:

- severe cardiopulmonary pathology scoring ASA III (unstable)

- IV

- V

- sleep apnoea

- morbid obesity (BMI > 35)

- Failure to proceed with resection, emergency resection or conversion to > 50% parenchymal resection

- Chronic/intractable pain conditions:

- requiring long-term high dose analgesia

- implanted analgesic devices

- Predisposition to severe post-operative nausea and vomiting:

- motion sickness

- previous PONV

- Anatomical or physiological indication for rapid sequence induction (relative)

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Single Blind (Outcomes Assessor), Primary Purpose: Treatment


Related Conditions & MeSH terms


Intervention

Drug:
Morphine sulphate
Intravenous morphine titrated up to 0.25 milligrams/kilogram prior to end of resection phase or within first 2 hours of surgery
Morphine hydrochloride, remifentanil hydrochloride
Pre-induction intrathecal morphine HCl (< 3 attempts), single shot via 25 G pencil point spinal needle at 10 micrograms/kilogram Intra-operative intravenous remifentanil HCl at titratable dose range 0.1-0.25 micrograms/kilogram/minute until start of wound closure

Locations

Country Name City State
Ireland St. Vincent's University Hospital Dublin County Dublin

Sponsors (1)

Lead Sponsor Collaborator
St Vincent's University Hospital, Ireland

Country where clinical trial is conducted

Ireland, 

Outcome

Type Measure Description Time frame Safety issue
Primary Opioid-related side effects First 24 hours post-operatively No
Secondary IV opioid analgesic supplementation First 24 hours post-operatively No
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