AnesthesiaNCT02170948
The Effectiveness of the Addition of Dexmedetomidine to Analgesia for Ankle Surgery.
A study testing Dexmedetomidine in people with Anesthesia, run by University Health Network, Toronto at 1 site in Canada.
Trial summary
Forefoot surgeries involve a relatively short operation usually completed in 1 - 1½ hours, with patients generally being allowed to go home on the same day. Despite this, post-surgery pain is often severe and a delay in the discharge of patients due to difficulty with pain control after the surgery is common. Read more about this study
- Who is it for?
- Ages 18 to 65 years
- Conditions the study is for
- Anesthesia
- What is being tested?
- Dexmedetomidine
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 12 participants
- Where
- 1 siteCanada
- Study dates
- Apr 2014to 4 Jan 2019
- 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 to 65 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- English Speaking
- American Society of Anesthesiologists (ASA) I-III patients
- Ages 18-65
- Body Mass Index (BMI) ≤ 38 kg/m2
Who cannot join
- Preexisting neurological deficits or peripheral neuropathy in the distribution of the sciatic or femoral nerves
- Known coronary heart disease, congestive heart failure, cardiomyopathies, or arrhythmias
- Baseline line heart rate < 60 Beats Per Minute (BPM) or baseline systolic blood pressure < 100 mm Hg
- Medications that reduce heart rate
- Known liver or renal dysfunction or existing diseases affecting these organs
- Local infection
Show all 15Show fewer
- Contraindication to regional anesthesia
- Chronic pain disorders
- History of use of over 30mg oxycodone or equivalent per day
- Contraindication to a component of multi-modal analgesia
- Allergy to local anesthetics or dexmedetomidine
- History of significant psychiatric conditions that may affect patient assessment
- Pregnancy
- Inability to provide informed consent
- Patient refusal
Trial locations and contacts
1 site in 1 country.
About this study
Official title: The Analgesic Efficacy of Dexmedetomidine as a Local Anesthetic Adjunct in Ankle Blocks for Forefoot Surgery. A Dose Ranging Study.
Forefoot surgeries involve a relatively short operation usually completed in 1 - 1½ hours, with patients generally being allowed to go home on the same day. Despite this, post-surgery pain is often severe and a delay in the discharge of patients due to difficulty with pain control after the surgery is common.
Performing nerve blocks in association with sedation is the preferred way to provide pain relief and offers important benefits for foot surgeries. With nerve blocks, the requirement for oral painkillers and their associated side effects is reduced. Increasing the duration of local anesthetic action is helpful as it increases the time of pain relief, allowing for a smoother transition to oral pain medications, earlier discharge, and faster recovery.
Read more
Recently, Precedex has been considered for its usefulness in prolonging the pain relief produced by nerve blocks. The identified benefits of this particular use include reducing post-surgical pain medications requirements, reducing the incidence of nausea and vomiting, reducing the incidence of sedation from such medication, and diminishing the incidence of respiratory depression (inadequate breathing). Two small studies have also shown that adding dexmedetomidine to nerve block solution results in prolonging pain relief.
The purpose of the study is to examine several doses of dexmedetomidine combined with local anesthetic drugs and determine the best combination for prolonging pain relief, while minimizing potential side effects.
- Conditions
- Anesthesia
- Being tested
- Dexmedetomidine
- Keywords
- ultrasound-guided regional anesthesia, nerve block, ankle block, dexmedetomidine, Precedex, ankle surgery, forefoot surgery, duration, anesthetic duration following ankle block for forefoot surgery
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
DexmedetomidineDrug
Also called Precedex
An anesthetic concoction of 2% Lidocaine, 1% Ropivacaine, and Dexmedetomidine diluted solution will be provided via a series of anesthetic injections related to the ankle block procedure
| Study group | Role | What they receive |
|---|---|---|
| Dex 0.5 | Experimental | Ropivacaine and Lidocaine plus Dexmedetomidine (0.5mg/kg) plus Normal Saline Receives: Drug: Dexmedetomidine |
| Dex 1.0 | Experimental | Ropivacaine and Lidocaine plus Dexmedetomidine (1.0mg/kg) plus Normal Saline Receives: Drug: Dexmedetomidine |
What is being measured
The primary outcome is the main question the study is designed to answer.
Duration of Analgesia
Patients will be asked about the duration of their analgesia by asking when they first felt pain at the surgical site. Patients will be asked prior to discharge, and routinely during specified phone calls until analgesia wear off
Measured: patients will be followed for two weeks
Secondary outcomes (1)
Requirements for pain medications; complications
Patients will be called at 24 hours, 7 days and 14 days and asked to describe their pain levels, the requirements for pain medication, and any complications that may have arisen post-operatively.
Measured: weekly for up to 2 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted23 Jun 2014 (estimated)
- Study startApr 2014
- Primary completion4 Jan 2019
- Study completion4 Jan 2019
Why it stopped: Recruitment was very low
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for AnesthesiaStudies of the same condition, open and under way.
- More trials run by University Health Network, TorontoThe sponsor's other registered studies.
- 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
- Parallel groups
- Masking
- Triple blind
- Who is masked
- Participant, Care provider, Investigator
- Enrolment
- 12 participants (actual)
Sponsor and investigators
- Lead sponsor
- University Health Network, Toronto
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02170948
- Sponsor's protocol ID
- 13-6795-A
- Status last verified
- Nov 2017
- First submitted
- 19 Jun 2014
- Last updated
- 7 Mar 2019
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 7 Mar 2019. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Analgesic Efficacy of Dexmedetomidine as a Local Anesthetic Adjunct in Ankle Blocks for Forefoot Surgery. A Dose Ranging Study.
- ClinicalTrials.gov ID
- NCT02170948
- Acronym / sponsor ID
- 13-6795-A
- Conditions
- Anesthesia
- Keywords
- ultrasound-guided regional anesthesia, nerve block, ankle block, dexmedetomidine, Precedex, ankle surgery, forefoot surgery, duration
- Study type
- Interventional
- Recruitment status
- TerminatedReason stopped: Recruitment was very low
- Enrolment
- 12 participants (actual)
- Lead sponsor
- University Health Network, TorontoUniversity, hospital or other
- Study start
- Apr 2014
- Primary completion
- 4 Jan 2019 (actual)
- Study completion
- 4 Jan 2019 (actual)
- First posted
- 23 Jun 2014 (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.
Forefoot surgeries involve a relatively short operation usually completed in 1 - 1½ hours, with patients generally being allowed to go home on the same day. Despite this, post-surgery pain is often severe and a delay in the discharge of patients due to difficulty with pain control after the surgery is common.
Performing nerve blocks in association with sedation is the preferred way to provide pain relief and offers important benefits for foot surgeries. With nerve blocks, the requirement for oral painkillers and their associated side effects is reduced. Increasing the duration of local anesthetic action is helpful as it increases the time of pain relief, allowing for a smoother transition to oral pain medications, earlier discharge, and faster recovery.
Recently, Precedex has been considered for its usefulness in prolonging the pain relief produced by nerve blocks. The identified benefits of this particular use include reducing post-surgical pain medications requirements, reducing the incidence of nausea and vomiting, reducing the incidence of sedation from such medication, and diminishing the incidence of respiratory depression (inadequate breathing). Two small studies have also shown that adding dexmedetomidine to nerve block solution results in prolonging pain relief.
The purpose of the study is to examine several doses of dexmedetomidine combined with local anesthetic drugs and determine the best combination for prolonging pain relief, while minimizing potential side effects.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Triple blind (participant, care provider, investigator)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Dex 0.5 | Experimental | Drug: DexmedetomidineRopivacaine and Lidocaine plus Dexmedetomidine (0.5mg/kg) plus Normal Saline |
| Dex 1.0 | Experimental | Drug: DexmedetomidineRopivacaine and Lidocaine plus Dexmedetomidine (1.0mg/kg) plus Normal Saline |
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (4 listed)
- English Speaking
- American Society of Anesthesiologists (ASA) I-III patients
- Ages 18-65
- Body Mass Index (BMI) ≤ 38 kg/m2
Key exclusion criteria (15 listed)
- Preexisting neurological deficits or peripheral neuropathy in the distribution of the sciatic or femoral nerves
- Known coronary heart disease, congestive heart failure, cardiomyopathies, or arrhythmias
- Baseline line heart rate < 60 Beats Per Minute (BPM) or baseline systolic blood pressure < 100 mm Hg
- Medications that reduce heart rate
- Known liver or renal dysfunction or existing diseases affecting these organs
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 |
|---|---|---|
| DexmedetomidineAlso: PrecedexAn anesthetic concoction of 2% Lidocaine, 1% Ropivacaine, and Dexmedetomidine diluted solution will be provided via a series of anesthetic injections related to the ankle block procedure | Drug | Dex 0.5, Dex 1.0 |
Primary outcome
Duration of Analgesia
Time frame: patients will be followed for two weeks
Patients will be asked about the duration of their analgesia by asking when they first felt pain at the surgical site. Patients will be asked prior to discharge, and routinely during specified phone calls until analgesia wear off
1 secondary outcome
Requirements for pain medications; complications
Time frame: weekly for up to 2 weeks
Results and safety
The study was stopped early (reason given: Recruitment was very low). Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 7 Mar 2019.
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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.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Dexmedetomidine in people with Anesthesia, run by University Health Network, Toronto at 1 site in Canada.
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 4 inclusion and 15 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: stopped early, as of the sponsor's last update on 7 Mar 2019. 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 Canada. 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. 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 was stopped early (reason given: Recruitment was very low). Results are not available in the source record.
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?
Duration of Analgesia (time frame: patients will be followed for two weeks). 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 7 Mar 2019.