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Chronic PainNCT00484731

Effect of Intraoperative Infiltration With Bupivacain on the Development of Chronic Pain After Inguinal Hernia Repair

A study testing Infiltration with Saline and Infiltration with Bupivacaine in people with Chronic Pain, run by Luzerner Kantonsspital at 1 site in Switzerland.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The effect of intraoperative infiltration of the operation site with bupivacain on the development of chronic pain is the object of our trial. We hypothesize that the occurrence of chronic pain in the goup of patients receiving the infiltration will be 50% less than in the placebo group receiving normal saline. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Chronic Pain
What is being tested?
Infiltration with Saline and Infiltration with Bupivacaine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
404 participants
Where
1 siteSwitzerland
Study dates
Jul 2006to Jun 2012
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Adult patients (≥ 18 years) with primary or recurrent single or double sided symptomatic but not incarcerated inguinal hernias with an elective hernia repair are included.
  • No other interventions (i.e. umbilical hernia) are allowed.
  • Written informed consent needs to be obtained.

Who cannot join

  • Patients with legal incompetence,
  • Pregnant and nursing women,
  • Patients with presence or history of active malignancy or systemic diseases,
  • Under immunosuppressive treatment,
  • With systemic or severe local inflammation or infection,
  • With wound healing disorders and with physical or mental incapacity, which makes it impossible to obtain informed consent are excluded.
  • As pacemakers interfere with the electrical stimulation of the Pain Matcher® and vice versa patients with pacemakers or other implanted electrical devices were also excluded.

Trial locations and contacts

1 site in 1 country.

Switzerland1 site
  • Kantonsspital Luzern

    Lucerne, 6000

Other trials in Switzerland

About this study

Official title: Investigating the Effect of Intra-operative Infiltration With Local Anaesthesia on the Development of Chronic Postoperative Pain After Inguinal Hernia Repair. A Randomized Placebo Controlled Triple Blinded and Group Sequential Study Design

The effect of intraoperative infiltration of the operation site with bupivacain on the development of chronic pain is the object of our trial. We hypothesize that the occurrence of chronic pain in the goup of patients receiving the infiltration will be 50% less than in the placebo group receiving normal saline. The study is a randomized controlled triple blinded trial with a sequential study design.

Read the detailed description

264 patients scheduled for an inguinal hernia repair using one of three procedures (Lichtenstein, Barwell and TEP = total extraperitoneal hernioplasty) are being randomly allocated intra-operatively into two groups. Group I patients receive a local injection of 20ml Carbostesin® 0.25% at the end of the operation according to a standardised procedure. Group II patients get a 20 ml placebo (0.9% Saline) injection. We use pre-filled identically looking syringes for blinded injection, i.e. the patient, the surgeon and the examinator who performs the postoperative clinical follow-ups remain unaware of group allocation. The primary outcome of the study is the occurrence of developing chronic pain (defined as persistent pain at 3 months FU) measured by VAS and Pain Matcher® device (Cefar Medical AB, Lund, Sweden).

In addition to a sample size re-evaluation three interim analyses are planned after 120, 180 and 240 patients had finished their 3-months follow-up to allow for early study termination.

Conditions
Chronic Pain
Being tested
Infiltration with Saline, Infiltration with Bupivacaine
Medical subject headings
Chronic Pain

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Infiltration with SalineProcedure or surgery

    Infiltration with Bupivacaine according to protocol

  • Infiltration with BupivacaineProcedure or surgery

Study groups in NCT00484731
Study groupRoleWhat they receive
Injection with SalinePlacebo comparatorInjection with Saline instead of Bupivacain
Receives: Procedure: Infiltration with Saline
Injection with BupivacaineActive comparatorInjection with Bupivacaine
Receives: Procedure: Infiltration with Bupivacaine

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. occurrence of chronic pain

    Measured: 3 months

Secondary outcomes (1)
  1. Level of Pain:Pain Matcher®,VAS;Areas of hyperalgesia,hypaesthesia Hospitalization:Length of stay (days) ASA-Classification Beginning of mobilisation (days) Return to work or normal activity (days and %) Quality of life (SF36)

    Measured: one year

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted11 Jun 2007 (estimated)
  2. Study startJul 2006
  3. Primary completionDec 2011
  4. Study completionJun 2012

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
Triple blind
Who is masked
Participant, Investigator, Outcomes assessor
Enrolment
404 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00484731
Sponsor's protocol ID
585
Other IDs
ISRCTN pending
Status last verified
Feb 2021
First submitted
7 Jun 2007
Last updated
18 Feb 2021
Results posted
No
Data monitoring committee
Yes

Publications

  • Honigmann P, Fischer H, Kurmann A, Audige L, Schupfer G, Metzger J. Investigating the effect of intra-operative infiltration with local anaesthesia on the development of chronic postoperative pain after inguinal hernia repair. A randomized placebo controlled triple blinded and group sequential study design [NCT00484731]. BMC Surg. 2007 Nov 6;7:22. doi: 10.1186/1471-2482-7-22.

    PubMed 17986324

Questions about this trial

What is this clinical trial studying?

A study testing Infiltration with Saline and Infiltration with Bupivacaine in people with Chronic Pain, run by Luzerner Kantonsspital at 1 site in Switzerland.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 18 Feb 2021. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Switzerland. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

occurrence of chronic pain (time frame: 3 months). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00484731, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 18 Feb 2021.

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