AmputationNCT00667264
Ambulatory Continuous Peripheral Nerve Blocks for Treatment of Post-Amputation Phantom Limb and Stump Pain
A study testing perineural ropivacaine in people with Amputation and Phantom Limb, run by University of California, San Diego at 1 site in United States.
Trial summary
Research study to determine if putting local anesthetic-or numbing medication-through one or two tiny tube(s) placed next to the nerves that go to an amputated limb will decrease phantom limb and/or stump pain. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Amputation, Phantom Limb, Stump Pain
- What is being tested?
- perineural ropivacaine
- Type of treatment
- Injection or infusion, Surgery or procedure
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 7 participants
- Where
- 1 siteUnited States
- Study dates
- Oct 2008to Dec 2011
- 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
- previous upper or lower limb amputation including at least one metacarpal or metatarsal bone, respectively
- age 18 years or older
- phantom limb and/or stump pain described as at least a 2 on the NRS for the previous week [and pain occurring on a weekly basis over the previous month]
- willing to have an ambulatory perineural infusion for 6 days
- willing to avoid additional "new" analgesic interventions from 4 weeks prior to at least 4 weeks following catheter placement, and preferably to 6 months following catheter placement
- the availability of a "caretaker" who will transport the subject home following the procedure and remain with the subject for the first night of the infusion
Who cannot join
- known hepatic or renal insufficiency
- allergy to the study medications
- possessing a contraindication to perineural catheter placement or perineural local anesthetic infusion
Trial locations and contacts
1 site in 1 country.
About this study
Research study to determine if putting local anesthetic-or numbing medication-through one or two tiny tube(s) placed next to the nerves that go to an amputated limb will decrease phantom limb and/or stump pain.
Read the detailed description
Specific Aim 1: To determine if, compared with current standard-of-care treatment, the addition of an ambulatory continuous peripheral nerve block decreases post-amputation phantom limb and stump pain.
Hypothesis 1: Following upper or lower extremity amputation, phantom limb and/or stump pain will be significantly decreased four weeks following a multiple-day ambulatory continuous peripheral nerve block as compared with patients receiving standard-of-care treatment (as measured on the 11-point numeric rating scale).
Specific Aim 2: To investigate the possible relationship between the addition of a multiple-day ambulatory continuous peripheral nerve block to standard-of-care treatment of post-amputation phantom limb and/or stump pain and cortical reorganization.
Hypothesis 2: Following upper or lower extremity amputation with subsequent phantom limb pain/sensation and/or stump pain, the addition of a multiple-day ambulatory continuous peripheral nerve block to standard-of-care treatment will result in cortical reorganization during and four-weeks following the perineural infusion (as measured by MRI).
- Conditions
- Amputation, Phantom Limb, Stump Pain
- Being tested
- perineural ropivacaine
- Keywords
- pain, phantom limb, stump pain, catheter, nerve block, peripheral nerve block, ucsd, Post-amputation phantom limb or stump pain
- Medical subject headings
- Phantom Limb, Pain
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
perineural ropivacaineProcedure or surgery
Subjects will be randomized to one of two groups: ropivacaine 0.4% or normal saline (placebo). The basal rate will be set at 7 mL/h.
| Study group | Role | What they receive |
|---|---|---|
| Active | Active comparator | 3-7 days of perineural local anesthetic infusion Receives: Procedure: perineural ropivacaine |
| Placebo | Placebo comparator | 3-7 days of perineural normal saline infusion Receives: Procedure: perineural ropivacaine |
What is being measured
The primary outcome is the main question the study is designed to answer.
Primary analysis will compare the two treatment groups for the phantom limb/stump pain change from baseline to 4 weeks following the initial catheter placement
Measured: Week 4
Secondary outcomes (3)
Physical Functioning · Brief Pain Inventory
Measured: pre-intervention, then days 1, 3, 8, 28, 84, and 365
Nervous System Reorganization [if patient elected to participate in the MRI procedures] · MRI procedure
Measured: pre-intervention; and then 8 and 28 days post-intervention
Pain · 11-point numeric rating scale of pain intensity · Usage of baseline and rescue analgesics in previous 24 hours · Patient Global Impression of Change scale
Measured: Day 8, Day 28, Month 12
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted28 Apr 2008 (estimated)
- Study startOct 2008
- Primary completionJan 2011
- Study completionDec 2011
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for AmputationStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
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
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Quadruple blind
- Who is masked
- Participant, Care provider, Investigator, Outcomes assessor
- Enrolment
- 7 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of California, San Diego
- Sponsor type
- University, hospital or other
- Collaborators
- Summit Medical, National Institute of General Medical Sciences (NIGMS)
- Responsible party
- Principal investigator, Brian M. Ilfeld, MD, MS, University of California, San Diego
- Investigators
- Brian Ilfeld, M.D., M.S., Principal investigator, University of California, San Diego
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00667264
- Sponsor's protocol ID
- UCSD Phantom Pilot
- Other IDs
- GM077026
- Status last verified
- Jun 2012
- First submitted
- 24 Apr 2008
- Last updated
- 28 Jun 2012
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 28 Jun 2012. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Ambulatory Continuous Peripheral Nerve Blocks for Treatment of Post-Amputation Phantom Limb and Stump Pain
- ClinicalTrials.gov ID
- NCT00667264
- Acronym / sponsor ID
- UCSD Phantom Pilot
- Conditions
- Amputation, Phantom Limb, Stump Pain
- Keywords
- pain, phantom limb, stump pain, catheter, nerve block, peripheral nerve block, ucsd, Post-amputation phantom limb or stump pain
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 7 participants (actual)
- Lead sponsor
- University of California, San DiegoUniversity, hospital or other
- Collaborators
- Summit Medical, National Institute of General Medical Sciences (NIGMS)
- Study start
- Oct 2008
- Primary completion
- Jan 2011 (actual)
- Study completion
- Dec 2011 (actual)
- First posted
- 28 Apr 2008 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Research study to determine if putting local anesthetic-or numbing medication-through one or two tiny tube(s) placed next to the nerves that go to an amputated limb will decrease phantom limb and/or stump pain.
Detailed description
Specific Aim 1: To determine if, compared with current standard-of-care treatment, the addition of an ambulatory continuous peripheral nerve block decreases post-amputation phantom limb and stump pain.
Hypothesis 1: Following upper or lower extremity amputation, phantom limb and/or stump pain will be significantly decreased four weeks following a multiple-day ambulatory continuous peripheral nerve block as compared with patients receiving standard-of-care treatment (as measured on the 11-point numeric rating scale).
Specific Aim 2: To investigate the possible relationship between the addition of a multiple-day ambulatory continuous peripheral nerve block to standard-of-care treatment of post-amputation phantom limb and/or stump pain and cortical reorganization.
Hypothesis 2: Following upper or lower extremity amputation with subsequent phantom limb pain/sensation and/or stump pain, the addition of a multiple-day ambulatory continuous peripheral nerve block to standard-of-care treatment will result in cortical reorganization during and four-weeks following the perineural infusion (as measured by MRI).
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Quadruple blind (participant, care provider, investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Active | Active comparator | Procedure: perineural ropivacaine3-7 days of perineural local anesthetic infusion |
| Placebo | Placebo comparator | Procedure: perineural ropivacaine3-7 days of perineural normal saline infusion |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (6 listed)
- previous upper or lower limb amputation including at least one metacarpal or metatarsal bone, respectively
- age 18 years or older
- phantom limb and/or stump pain described as at least a 2 on the NRS for the previous week [and pain occurring on a weekly basis over the previous month]
- willing to have an ambulatory perineural infusion for 6 days
- willing to avoid additional "new" analgesic interventions from 4 weeks prior to at least 4 weeks following catheter placement, and preferably to 6 months following catheter placement
Key exclusion criteria (3 listed)
- known hepatic or renal insufficiency
- allergy to the study medications
- possessing a contraindication to perineural catheter placement or perineural local anesthetic infusion
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| perineural ropivacaineSubjects will be randomized to one of two groups: ropivacaine 0.4% or normal saline (placebo). The basal rate will be set at 7 mL/h. | Procedure or surgery | Active, Placebo |
Primary outcome
Primary analysis will compare the two treatment groups for the phantom limb/stump pain change from baseline to 4 weeks following the initial catheter placement
Time frame: Week 4
3 secondary outcomes
Physical Functioning · Brief Pain Inventory
Time frame: pre-intervention, then days 1, 3, 8, 28, 84, and 365
Nervous System Reorganization [if patient elected to participate in the MRI procedures] · MRI procedure
Time frame: pre-intervention; and then 8 and 28 days post-intervention
Pain · 11-point numeric rating scale of pain intensity · Usage of baseline and rescue analgesics in previous 24 hours · Patient Global Impression of Change scale
Time frame: Day 8, Day 28, Month 12
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 28 Jun 2012.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Brian Ilfeld, M.D., M.S. principal investigator
University of California, San Diego
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing perineural ropivacaine in people with Amputation and Phantom Limb, run by University of California, San Diego at 1 site in United States.
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 6 inclusion and 3 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 28 Jun 2012. 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 United States. 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?
Primary analysis will compare the two treatment groups for the phantom limb/stump pain change from baseline to 4 weeks following the initial catheter placement (time frame: Week 4). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 28 Jun 2012.