Comparison of two different flow rates of local anaesthetic for pain relief after shoulder rotator cuff repair

A comparison of Ropivacaine 2mL/hr and 5mL/hr for ambulatory patient controlled interscalene analgesia after rotator cuff repair

Status

Completed

Phases

Unknown

Study type

Interventional

Source

ANZCTR

Registry ID

ACTRN12609000740291

Enrollment

Registered

2009-08-26

Start date

2009-05-13

Completion date

Unknown

Last updated

2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

This study aims to further refine the optimal infusion of ropivacaine to be used for continuous interscalene analgesia after shoulder surgery. A prevuous study compared ropivacaine 0.2% and 0.4% given at the same rate following rotator cuff repair. Analysis of the data has revealed little difference between the groups in any of the outcome parameters. We propose to continue the study with similar methodology, but this time use ropivacaine 0.2% at two different flow rates, 2 ml/h and 5 ml/hr. We will be assessing effectiveness of the analgesia and side effects over the first 2 days postoperatively. essentially, the main hypothesis is that the higher flow rate will improve the pain relief after surgery.

Interventions

0.2% Ropivacaine at flow rate of 2mL/hr with regular 6 hourly 5 ml boluses for continuous interscalene block after rotator cuff repair for 48 hours postoperatively as required by the patient.

Study design

Allocation

Randomised controlled trial

Intervention model

Parallel

Primary purpose

Treatment

Masking

Blinded (masking used)

Eligibility

Sex/Gender

All

Age

0 to No maximum

Healthy volunteers

Yes

Inclusion criteria

Patients requiring continuous interscalene analgesia following rotator cuff repair under the care of the two investigators.

Exclusion criteria

1. Patient refusal/inability to consent. 2. Allergy amide local anaesthetic (LA). 3. Existing neurological disorders/neuropathy of the operative extremity. 4. Infection at site of needle puncture. 5. Severe respiratory disease. 6. Chronic opioid therapy. 7. Intolerance of all non-steroidal anti-inflammatory drugs (NSAIDs)

Outcome results