- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00708526
Improved Patient Recovery After Anesthesia With Hypercapnia Hyperpnoea
November 2, 2022 updated by: University of Utah
The proposed study will measure the time from the end of surgery until the time patients meet the discharge criteria from the postoperative anesthesia care unit and the time from the end of surgery until the patients regained cognitive function after anesthesia.
Study Overview
Status
Completed
Conditions
Intervention / Treatment
Detailed Description
Hypercapnia has been used in conjunction with hyperpnoea to provide a more rapid return of responsiveness after inhaled anesthesia.
In our first clinical study with isoflurane we confirmed that the time from turning off the vaporizer to opening of eyes was shortened by an average of 62% when the minute ventilation was elevated and the end tidal carbon dioxide concentration was kept at 52 mmHg rather than 28 mmHg during emergence.
In our second study we found that hypercapnia and hyperpnoea accelerated recovery proportionately for sevoflurane and desflurane.
The benefits of accelerating subject recovery in the operating room may extend to the entire recovery period if the subject is more alert and easier to care for when they arrive in the post anesthesia care unit.
Study Type
Interventional
Enrollment (Actual)
22
Phase
- Not Applicable
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
-
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Utah
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Salt Lake City, Utah, United States, 84132
- University of Utah
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-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years and older (Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- adults
- ASA class I-III
- both genders
- scheduled to undergo eye surgery at the Moran Hospital.
Exclusion Criteria:
- a history of renal or hepatic disease,
- chronic alcohol or drug abuse,
- disabling neuropsychiatric disorder,
- hypersensitivity or unusual response to other halogenated anesthetics,
- pulmonary hypertension,
- increased intracranial pressure,
- seizure disorder
- personal/familial history of malignant hyperthermia.
- currently being treated with known hepatic enzyme-inducing drugs (e.g., phenobarbital, dilantin or isoniazid)
- or with drugs known to alter anesthetic requirements (e.g., opiates, clonidine, alpha2 agonists, alcohol, anticonvulsants, antidepressants, barbiturates, benzodiazepines or other tranquilizers).
- intolerance to non-steroidal anti-inflammatories.
- have received general anesthesia within the previous 7 days,
- received any investigational drug within the previous 28 days,
- participated in a previous isoflurane or desflurane study
- Female subjects can be neither pregnant nor breast feeding.
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Health Services Research
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Phase 1 Recovery
Quick Emergence Device is in place for phase 1 anesthesia recovery
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The Quick Emergence Device is placed between the endotracheal tube and the anesthesia breathing circuit to enable hypercapnia when ventilation is increased.
The end-tidal gas sampling line is connected between the device and the endotracheal tube connector.
Minute ventilation is doubled and the EtCO2 is elevated to approximately 48 mmHg from the previous maintenance level of 35 mmHg.
Other Names:
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Other: Standard of care
Tidal volume and respiratory rate are not changed during phase 1 recovery from anesthesia
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Patients received intravenous fentanyl at the discretion of the attending anesthesiologist.
Anesthesia was induced with a remifentanil infusion, lidocaine, propofol, and rocuronium or succinylcholine at the anesthesiologist's discretion.
Maintenance anesthesia was 6% end tidal desflurane with oxygen flows of 2 L/min (though clinicians could deviate from this at their discretion).
Clinicians were directed to maintain blood pressure at ±20% of baseline.
A baseline remifentanil infusion was used throughout each case, and both remifentanil and fentanyl were titrated at the anesthesiologist's discretion.
Ventilation was adjusted to maintain an end tidal carbon dioxide concentration (EtCO2) of 35 mmHg.
Ondansetron 4 mg was given prophylactically before the end of surgery.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Recovery From Anesthesia
Time Frame: up to 2 hours
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average time in minutes from the time the surgeon finished closing the surgical incision until the time the investigator in the postoperative care unit determined that the patients meet the discharge criteria from the postoperative anesthesia care unit (their vital signs had been stable for at least 30 min, their pain scores were less than the tolerable pain scores, they could sit up without dizziness or nausea, and their Aldrete score was ≥8).
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up to 2 hours
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Return of Cognitive Function
Time Frame: up to 30 minutes
|
average time in minutes from the time the surgeon finished closing the surgical incision at the end of surgery until the patients could correctly state their full name, the current year and their day, month and year of birth
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up to 30 minutes
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Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Collaborators
Investigators
- Principal Investigator: Dwayne Westenskow, University of Utah
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start
March 1, 2008
Primary Completion (Actual)
November 1, 2008
Study Completion (Actual)
November 1, 2008
Study Registration Dates
First Submitted
June 30, 2008
First Submitted That Met QC Criteria
June 30, 2008
First Posted (Estimate)
July 2, 2008
Study Record Updates
Last Update Posted (Actual)
November 29, 2022
Last Update Submitted That Met QC Criteria
November 2, 2022
Last Verified
November 1, 2022
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 26111
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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