The Effect of Desflurane vs Sevoflurane on Perioperative Respiratory Complications in Laryngeal Mask Airway Anesthesia

December 26, 2018 updated by: Pathomporn Pin on, M.D., Chiang Mai University

The Effect of Desflurane vs Sevoflurane on Perioperative Respiratory Complications in Laryngeal Mask Airway Anesthesia: A Prospective Randomized Double-blinded Control Study

The effects of desflurane versus sevoflurane in adult patients undergoing LMA anesthesia on respiratory events during a less than 2-hour elective surgery.

Study Overview

Detailed Description

Laryngeal Mask Airway (LMA) anesthesia is generally performed for ambulatory surgery to avoid the use of neuromuscular blocking agents and to facilitate rapid emergence from anesthesia. Inhaled anesthetics are simply and popularly used during maintenance of anesthesia. The two most recent volatile anesthetic agents, desflurane and sevoflurane, are the two most commonly used in clinical practice for an ambulatory setting.

Desflurane is the volatile agent with low blood: gas partition coefficient (0.42). Desflurane's uptake and elimination from the body of a patient are rapid, which results in a fast onset of anesthesia and a fast recovery from anesthesia. This property provides desflurane as an ideal agent for the ambulatory anesthesia. However, its pungent odor is concerned to irritate the upper airway and may cause significant respiratory complications. Sevoflurane has a blood: gas partition coefficient of 0.65, which is slightly greater than desflurane. The major advantage over desflurane is the better scent. It is considered to be less airway irritation in LMA anesthesia with smooth induction and recovery.

The limitation of desflurane on its odor leads to a controversy if desflurane is similar to or worse than sevoflurane for LMA anesthesia. This is non-inferiority study designed to compare the occurrence of respiratory complications between desflurane and sevoflurane during LMA anesthesia.

Study Type

Interventional

Enrollment (Anticipated)

220

Phase

  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact Backup

Study Locations

      • Chiang Mai, Thailand, 50200
        • Recruiting
        • Chiang Mai University
        • Contact:
        • Sub-Investigator:
          • Prangmalee Leurcharusmee, M.D.
        • Principal Investigator:
          • Pathomporm Pin-on, M.D.

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

16 years to 73 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion criteria:

  • Patients with American Society of Anesthesiologists physical status classification of I-III
  • Elective surgery
  • Surgery with expected duration of operation of less than 2 hours
  • Surgery that anesthesiologist plans to use laryngeal mask airway during anesthesia

Exclusion Criteria:

  • Patients with gastroesophageal reflux disease
  • Patients with hiatal hernia
  • Patients with history of upper respiratory tract infection within 1 month before surgery
  • Heavy smoker (> 20 cigarettes per day)
  • Obese patients with body mass index > 30kg/m2
  • Pregnant patients
  • Unable to provide a written informed consent patients
  • Surgery requiring non-depolarizing muscle relaxants

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: Diagnostic
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Triple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Desflurane
Desflurane group: The rule of 24 will be applied, which means that the fresh gas flow (l/ min) multiplied by volume percent of desflurane must not exceed 24. Therefore, once the patients return of spontaneous ventilation, an anesthesiologist turns on oxygen 1 l/ min, nitrous oxide 1 l/ min, and desflurane 12 vol% for 1-2 minutes. When the end-tidal desflurane reaches 3-3.5% (approximately 0.5 MAC), the anesthesiologist will decrease oxygen and nitrous oxide to each 0.5 l/ min and desflurane to 6 vol% (1 MAC). Desflurane concentration will be adjusted to maintain the end-tidal desflurane around 3-6% (0.5-1 MAC).
Desflurane is the volatile agent with low blood: gas partition coefficient (0.42), its uptake and elimination from the body of a patient are rapid, which results in a fast onset of anesthesia and a fast recovery from anesthesia. This property provides desflurane as an ideal agent for the ambulatory anesthesia. However, its pungent odor is concerned to irritate the upper airway and may cause significant respiratory complications.
Other Names:
  • Des
Active Comparator: Sevoflurane
Sevoflurane group: The oxygen and nitrous oxide each 1 l/min will be turned on with sevoflurane 4 vol% for 1-2 minutes or until the end-tidal sevoflurane reach 1-1.2% (approximately 0.5 MAC). After that, the flow of oxygen and nitrous oxide is reduced to each 0.5 l/ min and concentration dial of sevoflurane is set to 2 vol% (1 MAC). During the operation, sevoflurane concentration will be adjusted to maintain the end-tidal sevoflurane around 1-2% (0.5-1 MAC)
Sevoflurane has a blood: gas partition coefficient of 0.65, which is slightly greater than desflurane. The major advantage over desflurane is the better scented. It is considered to be less airway irritation in LMA anesthesia with smooth induction and recovery.
Other Names:
  • Sev

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Occurrence of respiratory complications
Time Frame: From the beginning of operation until 30 minutes after the operation
Respiratory complications are coughing, breath holding, laryngospasm, bronchospasm, and desaturation
From the beginning of operation until 30 minutes after the operation

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Time of eye opening
Time Frame: Within 30 minutes after the end of operation
It is the time from discontinuation of anesthetic to the eye opening on verbal command.
Within 30 minutes after the end of operation
Time to follow motor command
Time Frame: Within 30 minutes after the end of operation
It is the time from discontinuation of anesthetic to hand squeezing.
Within 30 minutes after the end of operation
Time of LMA removal
Time Frame: Within 30 minutes after the end of operation
It is the time from discontinuation of anesthetic to removal of LMA.
Within 30 minutes after the end of operation
Frequency of postoperative nausea and vomiting (PONV)
Time Frame: Within 2 hours after operation
It is a number of patients with PONV in the early post-anesthetic period.
Within 2 hours after operation
Changes of blood pressure during anesthesia
Time Frame: Every 15 minutes, from the beginning of operation until 30 minutes after the operation
Non-invasive blood pressure will be recorded at the beginning of anesthesia, every 15 minutes during anesthetic maintenance, and at the time of LMA removal.
Every 15 minutes, from the beginning of operation until 30 minutes after the operation
Changes of heart rate during anesthesia
Time Frame: Every 15 minutes, from the beginning of operation until 30 minutes after the operation
Heart rate will be recorded at the beginning of anesthesia, every 15 minutes during anesthetic maintenance, and at the time of LMA removal.
Every 15 minutes, from the beginning of operation until 30 minutes after the operation

Other Outcome Measures

Outcome Measure
Measure Description
Time Frame
Time to achieve a satisfied Modified Aldrete score
Time Frame: Within 2 hours after operation
It is the time that the patient is ready to be discharged from post-anesthetic care unit.
Within 2 hours after operation
Number of Patients with high satisfaction to anesthesia
Time Frame: At 12-24 hour after surgery
The satisfaction is graded using a 5-point rating scale.
At 12-24 hour after surgery

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: Pathomporn Pin-on, M.D., Maharaj Nakorn Chiang Mai Hospital

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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

August 1, 2016

Primary Completion (Anticipated)

July 1, 2019

Study Completion (Anticipated)

July 1, 2019

Study Registration Dates

First Submitted

July 24, 2016

First Submitted That Met QC Criteria

December 26, 2016

First Posted (Estimate)

December 30, 2016

Study Record Updates

Last Update Posted (Actual)

December 28, 2018

Last Update Submitted That Met QC Criteria

December 26, 2018

Last Verified

December 1, 2018

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

IPD Plan Description

The investigators don't have a plan to share data. The investigators plan to make an individual participant data available only in site.

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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