Carbon Footprint in AnestheticNCT05385367
Life Cycle Assessment of Different Types of Anesthetic
A study testing Regional anesthetic, General anesthetic and Combined general anesthetic and regional anesthetic in people with Carbon Footprint in Anesthetic, run by University of Alberta at 2 sites in Canada.
Trial summary
Following Ethics approval, all adult patients undergoing surgery to fix the wrist fracture will be approached and consent to undergo this study. The amount of waste generated from general anesthetic, regional anesthetic and regional+general anesthetic will be collected and weighed. Read more about this study
- Who is it for?
- Ages 19 years and older
- Conditions the study is for
- Carbon Footprint in Anesthetic
- What is being tested?
- Regional anesthetic, General anesthetic and Combined general anesthetic and regional anesthetic
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 30 participants
- Where
- 2 sitesCanada
- Study dates
- 2 Aug 2022to 1 Jan 2026
- 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 19 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- All adult patients undergoing open reduction and internal fixation of wrist
- ASA 1-3
Who cannot join
- no contraindications for general anesthetic in the group for general anesthetic and vice versa
Trial locations and contacts
2 sites in 1 country.
Canada2 sites
University of Alberta Hospital
Edmonton, Alberta, T6G 2B7
Sturgeon Community Hospital
St. Albert, Alberta, T8N 6C4
About this study
Official title: Life Cycle Assessment of General Anesthetic, Regional Anesthetic and the Combination of General Anesthetic and Regional Anesthetic: a Randomized Controlled Trial
Following Ethics approval, all adult patients undergoing surgery to fix the wrist fracture will be approached and consent to undergo this study. The amount of waste generated from general anesthetic, regional anesthetic and regional+general anesthetic will be collected and weighed.
Patients undergoing this type of wrist surgery have only regional anesthetic, or general anesthetic, or both ie. regional anesthetic and general anesthetic.
The aim of the study is to compare the amount of waste generated from each type of anesthetic and this will give us a better idea of which anesthetic is more environmentally sustainable.
Read the detailed description
Following Ethics approval, all adult patients undergoing surgery to fix the wrist fracture will be approached and consent to undergo this study. The amount of waste generated from general anesthetic, regional anesthetic and regional+general anesthetic will be collected and weighed. Waste will include disposable and reusable wastes. Examples of disposable waste are all plastic packaging, syringes, needles, breathing tube, breathing circuits, gloves as well as drugs. Examples of reusable waste will be anesthetic face mask, laryngeal mask (which is a form of airway device that can be reprocessed), sterile gowns. The amount of anesthetic gas used will be obtained from the anesthetic machine.
Patients undergoing this type of wrist surgery have only regional anesthetic (freezing performed higher up in the arm to numb the whole arm for several hours), or general anesthetic (patient completely goes to deep anesthetic sleep), or both ie. regional anesthetic (freezing just for pain control afterwards) and general anesthetic (patient goes to deep anesthetic sleep after the freezing is done and they may need less pain killer during the surgery as well as afterwards).
The amount of waste generated will be compared amongst these 3 groups by life cycle analysis.
- Conditions
- Carbon Footprint in Anesthetic
- Being tested
- Regional anesthetic, General anesthetic, Combined general anesthetic and regional anesthetic
- Keywords
- carbon footprint, anesthetic waste, life cycle analsis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Regional anestheticOther
Patient having just the nerve block for surgery
General anestheticOther
Patient having just general anesthetic ie. 'go completely under' for surgery
Combined general anesthetic and regional anestheticOther
Patient having a combination of a nerve block and general anesthetic for surgery
| Study group | Role | What they receive |
|---|---|---|
| Regional anesthetic | Other | Patients only have nerve block with or without sedation Receives: Other: Regional anesthetic |
| General anesthetic | Other | Patients only have general anesthetic Receives: Other: General anesthetic |
| Combined general anesthetic and regional anesthetic | Other | Patients have both general anesthetic and regional anesthetic together Receives: Other: Combined general anesthetic and regional anesthetic |
What is being measured
The primary outcome is the main question the study is designed to answer.
Carbon dioxide emission
Amount of carbon dioxide emission
Measured: During surgical intervention
Secondary outcomes (2)
Generation of solid waste
Solid waste generated within the type of anesthetic
Measured: During surgical intervention
Duration of surgery
Duration of surgery
Measured: During surgical intervention
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted23 May 2022
- Study start2 Aug 2022
- Primary completion1 Jan 2026
- Study completion1 Jan 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Carbon Footprint in AnestheticStudies of the same condition, open and under way.
- More trials run by University of AlbertaThe 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
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- Mulicentre trial
- Masking
- None (open label)
- Enrolment
- 30 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Alberta
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05385367
- Sponsor's protocol ID
- Pro00118522
- Status last verified
- May 2026
- First submitted
- 11 May 2022
- Last updated
- 8 May 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 8 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Life Cycle Assessment of General Anesthetic, Regional Anesthetic and the Combination of General Anesthetic and Regional Anesthetic: a Randomized Controlled Trial
- ClinicalTrials.gov ID
- NCT05385367
- Acronym / sponsor ID
- Pro00118522
- Conditions
- Carbon Footprint in Anesthetic
- Keywords
- carbon footprint, anesthetic waste, life cycle analsis
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 30 participants (actual)
- Lead sponsor
- University of AlbertaUniversity, hospital or other
- Study start
- 2 Aug 2022 (actual)
- Primary completion
- 1 Jan 2026 (actual)
- Study completion
- 1 Jan 2026 (actual)
- First posted
- 23 May 2022 (actual)
- 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.
Following Ethics approval, all adult patients undergoing surgery to fix the wrist fracture will be approached and consent to undergo this study. The amount of waste generated from general anesthetic, regional anesthetic and regional+general anesthetic will be collected and weighed.
Patients undergoing this type of wrist surgery have only regional anesthetic, or general anesthetic, or both ie. regional anesthetic and general anesthetic.
The aim of the study is to compare the amount of waste generated from each type of anesthetic and this will give us a better idea of which anesthetic is more environmentally sustainable.
Detailed description
Following Ethics approval, all adult patients undergoing surgery to fix the wrist fracture will be approached and consent to undergo this study. The amount of waste generated from general anesthetic, regional anesthetic and regional+general anesthetic will be collected and weighed. Waste will include disposable and reusable wastes. Examples of disposable waste are all plastic packaging, syringes, needles, breathing tube, breathing circuits, gloves as well as drugs. Examples of reusable waste will be anesthetic face mask, laryngeal mask (which is a form of airway device that can be reprocessed), sterile gowns. The amount of anesthetic gas used will be obtained from the anesthetic machine.
Patients undergoing this type of wrist surgery have only regional anesthetic (freezing performed higher up in the arm to numb the whole arm for several hours), or general anesthetic (patient completely goes to deep anesthetic sleep), or both ie. regional anesthetic (freezing just for pain control afterwards) and general anesthetic (patient goes to deep anesthetic sleep after the freezing is done and they may need less pain killer during the surgery as well as afterwards).
The amount of waste generated will be compared amongst these 3 groups by life cycle analysis.
Study design
- Primary purpose
- Other
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 3
- Model description
- Mulicentre trial
| Arm | Type | Receives |
|---|---|---|
| Regional anesthetic | Other | Other: Regional anestheticPatients only have nerve block with or without sedation |
| General anesthetic | Other | Other: General anestheticPatients only have general anesthetic |
| Combined general anesthetic and regional anesthetic | Other | Other: Combined general anesthetic and regional anestheticPatients have both general anesthetic and regional anesthetic together |
Who may qualify
- Ages
- 19 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (2 listed)
- All adult patients undergoing open reduction and internal fixation of wrist
- ASA 1-3
Key exclusion criteria (1 listed)
- no contraindications for general anesthetic in the group for general anesthetic and vice versa
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 |
|---|---|---|
| Regional anestheticPatient having just the nerve block for surgery | Other | Regional anesthetic |
| General anestheticPatient having just general anesthetic ie. 'go completely under' for surgery | Other | General anesthetic |
| Combined general anesthetic and regional anestheticPatient having a combination of a nerve block and general anesthetic for surgery | Other | Combined general anesthetic and regional anesthetic |
Primary outcome
Carbon dioxide emission
Time frame: During surgical intervention
Amount of carbon dioxide emission
2 secondary outcomes
Generation of solid waste
Time frame: During surgical intervention
Duration of surgery
Time frame: During surgical intervention
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 8 May 2026.
Related trials for Carbon Footprint in Anesthetic
Not yet recruitingObservational study
Sustainable Anaesthesia Practices in EUROPE - a Prospective International Cohort Study
Anaesthesia Conduction, Paediatric and Adult Patients
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.
2 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Regional anesthetic, General anesthetic and Combined general anesthetic and regional anesthetic in people with Carbon Footprint in Anesthetic, run by University of Alberta at 2 sites 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 2 inclusion and 1 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 8 May 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 sites 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 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?
Carbon dioxide emission (time frame: During surgical intervention). 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 8 May 2026.