The Effect of Two Different General Anesthesia Regimes on Postoperative Sleep Quality

February 5, 2023 updated by: Dr Kassiani Theodoraki, Aretaieion University Hospital
  • Major surgery can lead to postoperative disturbances in sleep patterns with subjective deterioration of sleep quality according to patients' reports as well as objective alterations of sleep architecture, as recorded by polysomnography
  • Factors implicated in postoperative sleep disturbances include but are not limited to the severity of the surgical procedure, the neuroendocrine response to surgery, inadequate treatment of postoperative pain and external factors interfering with sleep, such as light, noise and therapeutic procedures
  • There are differences in the molecular mechanisms inhalational anesthetics and intravenous agents affect different brain regions to induce anesthesia. Our hypothesis is that these differences may also be evident during the postoperative period, affecting brain functions which are involved in postoperative sleep architecture. So, the aim of this study will be to assess the effect of two different anesthetic techniques (propofol versus desflurane) of maintaining general anesthesia in patients subjected to similar major operations
  • Patients will be assessed with the Pittsburgh Sleep Quality Questionnaire (PSQI), regarding preoperative and long term postoperative sleep quality, sleep diaries regarding early postoperative sleep quality and biochemical markers (cortisol, prolactin and melatonin) regarding neuroendocrine response to surgery and disturbances in endogenous circadian secretion associated with sleep

Study Overview

Detailed Description

  • Major surgery can lead to postoperative disturbances in sleep patterns with subjective deterioration of sleep quality according to patients' reports as well as objective alterations of sleep architecture, as recorded by polysomnography
  • These disturbances include severe sleep fragmentation, rapid eye movement (REM) and slow wave sleep significant reductions in duration as well as an increase in non-REM sleep stages. Spontaneous awakenings are also frequently reported
  • After the third or fourth postoperative day, there is a substantial rebound in total REM activity, with frequent reports of vivid nightmares
  • Factors implicated in postoperative sleep disturbances include but are not limited to the severity of the surgical procedure, the neuroendocrine response to surgery, inadequate treatment of postoperative pain and external factors interfering with sleep, such as light, noise and therapeutic procedures
  • There are differences in the molecular mechanisms inhalational anesthetics and intravenous agents affect different brain regions to induce anesthesia. Our hypothesis is that these differences may also be evident during the postoperative period, affecting brain functions which are involved in sleep architecture, since sleep is an altered state of consciousness like anesthesia. So, the aim of this study will be to assess the effect of two different anesthetic techniques of maintaining general anesthesia in patients subjected to similar major operations
  • Patients taking part in the study will be evaluated regarding their preoperative sleep quality by the Pittsburgh Sleep Quality Questionnaire (PSQI). The PSQI examines seven components of sleep quality retrospectively over a period of four weeks: subjective sleep quality, sleep latency, sleep duration, habitual sleep efficiency, sleep disturbances, use of sleeping medication, and daytime dysfunction over the last month. The patient self-rates each of these seven areas of sleep. Scoring of answers is based on a 0-3 scale, whereby '3' reflects the negative extreme on the Likert scale. The global score is generated by summing up all seven component scores and ranges from 0 to 21, with higher values corresponding to reduced sleep quality.
  • Consequently, patients will be randomized to one of two groups: one group with general anesthesia maintenance based on an intravenous agent (propofol) and a second group with general anesthesia maintenance based on an inhalational agent (desflurane)
  • Patients will be assessed postoperatively with sleep diaries regarding potential sleep disturbances while they will be subjected to a long-term assessment of sleep quality by the use of the PSQI one and three months postoperatively
  • Since anesthetic-related differences in hormone profiles are expected, markers related to the neuroendocrine response to stress (cortisol, prolactin) will also be assessed to investigate differences between the two different anesthetic regimes
  • Impaired melatonin secretion has been proposed as one of the mechanisms involved in postoperative sleep disturbances. It is therefore expected that different methods of anesthetic maintenance may affect the endogenous circadian melatonin rhythm in a different way. Consequently, melatonin secretion will also be measured to investigate potential desynchronization of melatonin rhythm as well as differences in melatonin secretion between the two different anesthetic techniques
  • The clinical implications of this study lie in the fact that postoperative sleep disturbances can lead to postoperative hemodynamic instability, episodic hypoxemia and mental status deterioration, which can all untowardly affect the short and long-term postoperative outcome. It would be interesting to determine whether one of the two anesthetic regimes is superior to the other as far as postoperative disturbances in sleep architecture are concerned

Study Type

Interventional

Enrollment (Anticipated)

80

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

      • Athens, Greece, 115 28
        • Recruiting
        • ARETAIEION University Hospital
        • Principal Investigator:
          • Kassiani Theodoraki, PhD, DEAA
        • Principal Investigator:
          • Matthaios Stamelos, MD

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 to 80 years (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Adult patients, American Society of Anesthesiologists (ASA) distribution I-III, scheduled for elective upper major abdominal surgery

Exclusion Criteria:

  • Alcoholism
  • Mental disability
  • Psychiatric disease (depression, dementia)
  • Preoperative use of sleeping medication

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
  • Masking: SINGLE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
ACTIVE_COMPARATOR: maintenance with propofol
in patients allocated to the propofol group, general anesthesia will be maintained with propofol
in patients allocated to the propofol group, general anesthesia will be maintained with propofol
EXPERIMENTAL: maintenance with desflurane
in patients allocated to the desflurane group, general anesthesia will be maintained with desflurane
in patients allocated to the desflurane group, general anesthesia will be maintained with desflurane

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
change from preoperative status of subjective sleep quality (evaluated by Pittburgh Sleep Quality Index) at one month postoperatively
Time Frame: preoperative status, one month postoperatively
preoperative status, one month postoperatively

Secondary Outcome Measures

Outcome Measure
Time Frame
sleep diary
Time Frame: first postoperative week
first postoperative week
cortisol levels
Time Frame: within the first 24 hours postoperatively
within the first 24 hours postoperatively
prolactin levels
Time Frame: within the first 24 hours postoperatively
within the first 24 hours postoperatively
melatonin levels
Time Frame: within the first 48 hours postoperatively
within the first 48 hours postoperatively
change from preoperative status of subjective sleep quality (evaluated by Pittburgh Sleep Quality Index) at three months postoperatively
Time Frame: preoperative status, three months postoperatively
preoperative status, three months postoperatively

Collaborators and Investigators

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

Investigators

  • Study Chair: Eriphylli Argyra, PhD, ARETAIEION University Hospital
  • Principal Investigator: Matthaios Stamelos, MD, ARETAIEION University 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

March 1, 2014

Primary Completion (ANTICIPATED)

December 1, 2024

Study Completion (ANTICIPATED)

December 1, 2024

Study Registration Dates

First Submitted

February 7, 2014

First Submitted That Met QC Criteria

February 12, 2014

First Posted (ESTIMATE)

February 13, 2014

Study Record Updates

Last Update Posted (ACTUAL)

February 8, 2023

Last Update Submitted That Met QC Criteria

February 5, 2023

Last Verified

February 1, 2023

More Information

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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