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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT01158586
Other study ID # PCEA-LEVO-ROPI
Secondary ID
Status Recruiting
Phase Phase 4
First received July 7, 2010
Last updated July 7, 2010
Start date April 2010
Est. completion date December 2010

Study information

Verified date February 2010
Source United Christian Hospital
Contact Anthony Njo, MBBS; FHKCA; FANZCA
Phone 852-35136175
Email njokhnjo@yahoo.com.hk
Is FDA regulated No
Health authority Hong Kong: Department of Health
Study type Interventional

Clinical Trial Summary

Postoperative epidural analgesia (EA) is an effective and well-accepted modality of pain relief technique after having total knee replacement operation(1,4). Patient controlled epidural analgesia (PCEA) has been shown to be safe and effective in standard ward setting(2) and results in reduced epidural analgesic requirements(3). Besides, it also bear the advantage of avoidance of overdose, reduction of waiting times and involvement of patients in their analgesic regimen(3). Both ropivacaine and levobupivacaine are the local anaesthetic using in epidural analgesia which has been proven to be safe and effective(4). 0.2% Ropivacaine with 2ug/ml fentanyl has been used in our locality for more than 8 years. Another local anaesthetics, levobupivacaine, a S-enantiomer of bupivacaine has come up in Hong Kong, which has been proved to be safe, effective and may be better value for money. These two drugs has been proven to have similar analgesic potency in using as EA for postoperative pain relief for other operation(5,6,7) and for orthropaedics operation but in different concentration(4). Concerns have been raised about the introduction of the levobupivacaine in the departmental protocol. Objectives of this study are A)to determine the equivalence of two local anaesthetics regimen ; 0.2% ropivacaine with 2ug/ml fentanyl and 0.2% levobupivacaine with 2ug/ml fentanyl and B) to assess the cost-effectiveness of using these two regimens.

The null hypothesis is that the difference of analgesic effect, presented with visual analogue score, of two patient controlled epidural analgesia regimen, the 0.2% ropivacaine with 2 ug/ml fentanyl and 0.2% levobupivacaine with 2ug/ml fentanyl is higher than the threshold of 9 mm VAS. (8,9,10)


Recruitment information / eligibility

Status Recruiting
Enrollment 60
Est. completion date December 2010
Est. primary completion date September 2010
Accepts healthy volunteers No
Gender Both
Age group 18 Years and older
Eligibility Inclusion Criteria:

- > 18 years old, ASA I -III and

- Undergoing total knee arthroplasty

- Combine spinal-epidural anaesthesia

Exclusion Criteria:

- Known hypersensitivity to amide-type local anaesthetics

- Known hypersensitivity to opioids

- Known history of severe cardiovascular, renal, hepatic, neurological or psychiatric disease as judged by the investigator

- Known history of peripheral neuropathies

- Those receiving chronic analgesic therapy, or any contraindication for epidural analgesia (e.g. clotting disorders, or history of lumbar surgery)

- Inability to perform a pain score, or pregnancy or lactation

Study Design

Allocation: Randomized, Endpoint Classification: Bio-equivalence Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Treatment


Intervention

Drug:
Levobupivacaine
patient control epidural analgesia using 0.2% levobupivacaine with 2ug/ml fentanyl

Locations

Country Name City State
Hong Kong United Christian Hospital Hong Kong

Sponsors (1)

Lead Sponsor Collaborator
United Christian Hospital

Country where clinical trial is conducted

Hong Kong, 

References & Publications (1)

Reference 1. Block et al. Efficiancy of postoperative epidural analgesia: A meta-analysis. JAMA 290: 2455-63 2. Werawatganon T. Patient controlled intravenous opioid analgesia versus continuous epidural analgesia for pain after intra-abdominal surgery. The Cochrane Databas of systemic reviews. Issue 3 Art. No.: No.: CD 004044. DOI: 10.1002/14651858. CD004088.pub2. 3. Liu SS et al. Patient-controlled epidural analgesia with bupivacaine and fentanyl on hospital wards: propective experience with 1,030 surgical patients Anesthesiology 88: 388-95 4. Silvasti M et al. Patient-controlled analgesia versus continuous epidural analgesia after total knee arthroplasty Acta Anaesthesiol Scand 42: 576 - 80 5. Stand T et al. Patient-controlled epidural analgesia reduces analgesic requirements compared to continuous epidural infusion after major abdominal surgery. Can J Anaesth 50:258-64 6. Linda S. et al. Relative Analgesic Potencies of Levobupivacaine and Ropivacaine for Epidural Analgesia in Labor. Anesthesiology 2003; 99:1354-8 7. Marc Senard et al. Epidural Levobupivacaine 0.1% or Ropivacaine 0.1% Combined with Morphine Provides Comparable Analgesia After Abdominal Surgery Anesth Analg 2004;98:389-94 8. Kelly AM The minimum clinically significant difference in visual analogue scale pain score does not differ with severity of pain.Emerg Med J 2001; 18:205-07 9. Mark MSM et al. The minimum clinically significant difference in visual analogue scale pain score in a local emergency setting. Hong Kong Journal of Emergency Medicine 2009; 16(4): 234-6 10. Kelly AM. Does the clinically significant difference in visual analog scale pain scores vary with gender, age, or cause of pain? Acad Emerg Med. 1998 Nov; 5(11): 1086-90.

Outcome

Type Measure Description Time frame Safety issue
Primary Pain score as well as complications from epidural analgesia are also going to record and monitored 48hours after start epidural analgesia Yes
Secondary cost/treatment 48hours No
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