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The Effect of Desflurane Versus Sevoflurane Versus Propofol on Postoperative Delirium (RAPID-II)

Primary Purpose

Postoperative Delirium, Major Noncardiac Surgery, Postoperative Cognitive Dysfunction

Status
Recruiting
Phase
Phase 4
Locations
Austria
Study Type
Interventional
Intervention
Desflurane
Sevoflurane
Propofol
Sponsored by
Medical University of Vienna
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional prevention trial for Postoperative Delirium focused on measuring Propofol, Sevoflurane, Desflurane

Eligibility Criteria

65 Years - undefined (Older Adult)All SexesDoes not accept healthy volunteers

Inclusion Criteria: Provide written informed consent ≥65 years of age Scheduled for elective major noncardiac surgery with estimated time of surgery ≥ 2 hours Exclusion Criteria: Patients undergoing emergency surgery BMI > 45 kg/m^2 History of diagnosed dementia Language, vision, or hearing impairments that may compromise cognitive assessments History of malignant hyperthermia History of structural muscle disease History of organ transplantation (kidney, liver, lung, heart) Patients undergoing hyperthermic intraperitoneal chemotherapy ICU patients undergoing surgery

Sites / Locations

  • Medical University of ViennaRecruiting

Arms of the Study

Arm 1

Arm 2

Arm 3

Arm Type

Experimental

Active Comparator

Active Comparator

Arm Label

Desflurane Group

Sevoflurane Group

Propofol Group

Arm Description

After induction of anesthesia, maintenance of anesthesia will be performed using goal-directed administration of desflurane with an intraoperative goal of bispectral index (BIS) 50±10.

After induction of anesthesia, maintenance of anesthesia will be performed using goal-directed administration of sevoflurane with an intraoperative goal of bispectral index (BIS) 50±10.

After induction of anesthesia, maintenance of anesthesia will be performed using goal-directed administration of propofol with an intraoperative goal of bispectral index (BIS) 50±10.

Outcomes

Primary Outcome Measures

Incidence of postoperative delirium
Delirium will be assessed via 3D-cognitive assessment method (3D-CAM) test as early in the morning as practical and in the early evening for the initial five postoperative days while the patients remain hospitalized according to current recommendations. In patients in the intensive care unit (ICU), we will perform the 3D-CAM-ICU. Any positive CAM test will be considered evidence of delirium, which will be analyzed dichotomously.

Secondary Outcome Measures

Digit Symbol-Substitution-Test for the incidence of postoperative cognitive dysfunction (POCD)
POCD will be assessed using the Digit-Symbol-Substitution-Test (DSST). The occurrence of POCD will be defined when a patient has a Z score on two or all tests or the combined Z score is below -1.96 standard deviation (SD).
Trail Making Test (TMT) for the incidence of postoperative cognitive dysfunction (POCD)
POCD will be assessed using the Trail Making Test (TMT). The occurrence of POCD will be defined when a patient has a Z score on two or all tests or the combined Z score is below -1.96 standard deviation (SD).
Postoperative need of supplemental oxygen
We will record postoperative need for administration of supplemental oxygen to maintain a SpO2 of 93% during PACU or ICU stay.
Length of stay in ICU
Length of stay in ICU after surgery.
Incidence of Postoperative nausea and vomiting in the early postoperative period
Episode of nausea and/or vomiting within the first two hours after surgery
Incidence of Postoperative nausea and vomiting in the late postoperative period
Episode of nausea and/or vomiting from two hours after surgery until the fifth postoperative day.
Intraoperative hypotension
Intraoperative duration of mean arterial pressure <65mmHg and overall amount of intraoperatively administered catecholamines (including phenylephrine, norepinephrine, epinephrine, etilefrine, ephedrine).
Death within 5 days after surgery
Mortality in the first five postoperative days.

Full Information

First Posted
July 17, 2023
Last Updated
September 4, 2023
Sponsor
Medical University of Vienna
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1. Study Identification

Unique Protocol Identification Number
NCT05990790
Brief Title
The Effect of Desflurane Versus Sevoflurane Versus Propofol on Postoperative Delirium
Acronym
RAPID-II
Official Title
The Effect of Desflurane Versus Sevoflurane Versus Propofol on Postoperative Delirium in Elderly Patients Undergoing Moderate- to High-risk Major Noncardiac Surgery - a Prospective, Observer-blinded, Randomized, Clinical Trial
Study Type
Interventional

2. Study Status

Record Verification Date
September 2023
Overall Recruitment Status
Recruiting
Study Start Date
September 3, 2023 (Actual)
Primary Completion Date
December 31, 2027 (Anticipated)
Study Completion Date
December 31, 2028 (Anticipated)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Principal Investigator
Name of the Sponsor
Medical University of Vienna

4. Oversight

Studies a U.S. FDA-regulated Drug Product
No
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
Yes

5. Study Description

Brief Summary
Patients over the age of 65 years are at increased risk for developing delirium after noncardiac surgeries, resulting in increased morbidity and mortality. The prevention of postoperative delirium has been classified as a public health priority. However, so far data regarding possible intraoperative interventions to reduce the incidence of postoperative delirium is very scarce. Due to the more rapid wash-in and wash-out times of desflurane as compared to sevoflurane or propofol it seems reasonable that desflurane might be beneficial for the prevention of postoperative delirium. Therefore, we evaluate the effect of maintenance of anesthesia using desflurane, sevoflurane or propofol on postoperative delirium in elderly patients undergoing moderate- to high-risk major noncardiac surgery.
Detailed Description
Background: Postoperative delirium occurs in approximately 25% of patients over the age of 60 years undergoing major noncardiac surgery and is significantly associated with an increase in postoperative neurocognitive decline, morbidity, and mortality. The prevention of postoperative delirium has been classified as a public health priority. However, so far data regarding possible intraoperative interventions to reduce the incidence of postoperative delirium is very scarce. Previous small studies compared the effect of administration of sevoflurane versus propofol for maintenance of anesthesia on postoperative delirium and found beneficial effects of volatile anesthesia for the prevention of postoperative delirium. Furthermore, in small studies the administration of desflurane led to significantly shorter recovery periods after noncardiac surgery as compared to sevoflurane. Due to the more rapid wash-in and wash-out times of desflurane as compared to sevoflurane or propofol it seems reasonable that desflurane might be beneficial for the prevention of postoperative delirium. Therefore, we evaluate the effect of maintenance of anesthesia using desflurane, sevoflurane or propofol on postoperative delirium in elderly patients undergoing moderate- to high-risk major noncardiac surgery. Methods: We will include 1332 patients ≥ 65 years of age undergoing moderate- to high-risk major noncardiac surgery lasting at least two hours in this prospective observer-blinded randomized controlled clinical trial. After induction of anesthesia patients will be randomly assigned to receive desflurane, sevoflurane or propofol for maintenance of anesthesia. Our primary outcome will be the incidence of postoperative delirium in the first five postoperative days. Postoperative delirium will be diagnosed using the 3D-CAM or 3D-CAM-ICU in the morning and evening of the first five postoperative days as appropriate assessed by blinded study personnel. Two-interim analyses after 1/3 and 2/3 of recruitment are pre-planned. Statistics: The primary outcome, the incidence of postoperative delirium in the first five postoperative days, will be compared between the groups using a Chi-Square-test as well as a logistic regression model for the incidence of postoperative delirium will be performed accounting for randomized group, age and other possible confounding factors. Level of originality: Data regarding possible intraoperative interventions for the prevention of postoperative delirium are scarce. In detail, the effects of commonly used anesthetics on the incidence of postoperative delirium and neurocognitive dysfunction have only been studied in retrospective analyses or small prospective studies, which showed inconsistent results. Nevertheless, delirium is a major event after surgery and is associated with postoperative complications, worse neurocognitive recovery and increased mortality, especially in elderly patients. Thus, the results of this trial will help to choose the right anesthetic according to individual patients' requirements to reduce the risk for postoperative delirium in future.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Postoperative Delirium, Major Noncardiac Surgery, Postoperative Cognitive Dysfunction
Keywords
Propofol, Sevoflurane, Desflurane

7. Study Design

Primary Purpose
Prevention
Study Phase
Phase 4
Interventional Study Model
Parallel Assignment
Masking
ParticipantOutcomes Assessor
Allocation
Randomized
Enrollment
1332 (Anticipated)

8. Arms, Groups, and Interventions

Arm Title
Desflurane Group
Arm Type
Experimental
Arm Description
After induction of anesthesia, maintenance of anesthesia will be performed using goal-directed administration of desflurane with an intraoperative goal of bispectral index (BIS) 50±10.
Arm Title
Sevoflurane Group
Arm Type
Active Comparator
Arm Description
After induction of anesthesia, maintenance of anesthesia will be performed using goal-directed administration of sevoflurane with an intraoperative goal of bispectral index (BIS) 50±10.
Arm Title
Propofol Group
Arm Type
Active Comparator
Arm Description
After induction of anesthesia, maintenance of anesthesia will be performed using goal-directed administration of propofol with an intraoperative goal of bispectral index (BIS) 50±10.
Intervention Type
Drug
Intervention Name(s)
Desflurane
Intervention Description
After induction of anesthesia, maintenance of anesthesia will be performed using goal-directed administration of desflurane with an intraoperative goal of bispectral index (BIS) 50±10.
Intervention Type
Drug
Intervention Name(s)
Sevoflurane
Intervention Description
After induction of anesthesia, maintenance of anesthesia will be performed using goal-directed administration of sevoflurane with an intraoperative goal of bispectral index (BIS) 50±10.
Intervention Type
Drug
Intervention Name(s)
Propofol
Intervention Description
After induction of anesthesia, maintenance of anesthesia will be performed using goal-directed administration of propofol with an intraoperative goal of bispectral index (BIS) 50±10.
Primary Outcome Measure Information:
Title
Incidence of postoperative delirium
Description
Delirium will be assessed via 3D-cognitive assessment method (3D-CAM) test as early in the morning as practical and in the early evening for the initial five postoperative days while the patients remain hospitalized according to current recommendations. In patients in the intensive care unit (ICU), we will perform the 3D-CAM-ICU. Any positive CAM test will be considered evidence of delirium, which will be analyzed dichotomously.
Time Frame
First five postoperative days
Secondary Outcome Measure Information:
Title
Digit Symbol-Substitution-Test for the incidence of postoperative cognitive dysfunction (POCD)
Description
POCD will be assessed using the Digit-Symbol-Substitution-Test (DSST). The occurrence of POCD will be defined when a patient has a Z score on two or all tests or the combined Z score is below -1.96 standard deviation (SD).
Time Frame
First five postoperative days
Title
Trail Making Test (TMT) for the incidence of postoperative cognitive dysfunction (POCD)
Description
POCD will be assessed using the Trail Making Test (TMT). The occurrence of POCD will be defined when a patient has a Z score on two or all tests or the combined Z score is below -1.96 standard deviation (SD).
Time Frame
First five postoperative days
Title
Postoperative need of supplemental oxygen
Description
We will record postoperative need for administration of supplemental oxygen to maintain a SpO2 of 93% during PACU or ICU stay.
Time Frame
During PACU/ICU stay after surgery (max. of first 24 hours after surgery)
Title
Length of stay in ICU
Description
Length of stay in ICU after surgery.
Time Frame
First 30 days after surgery
Title
Incidence of Postoperative nausea and vomiting in the early postoperative period
Description
Episode of nausea and/or vomiting within the first two hours after surgery
Time Frame
First two hours after surgery
Title
Incidence of Postoperative nausea and vomiting in the late postoperative period
Description
Episode of nausea and/or vomiting from two hours after surgery until the fifth postoperative day.
Time Frame
First five postoperative days
Title
Intraoperative hypotension
Description
Intraoperative duration of mean arterial pressure <65mmHg and overall amount of intraoperatively administered catecholamines (including phenylephrine, norepinephrine, epinephrine, etilefrine, ephedrine).
Time Frame
During surgery
Title
Death within 5 days after surgery
Description
Mortality in the first five postoperative days.
Time Frame
First five postoperative days
Other Pre-specified Outcome Measures:
Title
Days at home in the first month after surgery
Description
Number of days at home within the first 30 postoperative days.
Time Frame
First 30 days after surgery
Title
Long-term postoperative cognitive dysfunction
Description
Long-term postoperative cognitive dysfunction will be assessed via Montreal cognitive assessment (MoCA). We will assess the baseline MoCA a day before surgery and one year after surgery via phone interview. Minimum score of the MoCA is 0 points. Maximum score of the MoCA is 22 points. Postoperative cognitive dysfunction is defined as a reduction of at least 2 points as compared to baseline.
Time Frame
One year after surgery
Title
Postoperative IL-6 concentrations (pg/ml)
Description
Postoperative area under the curve (AUC) within the first two postoperative days of concentrations of Interleukin 6 (IL-6).
Time Frame
First two postoperative days
Title
Postoperative PCT concentrations (ng/ml)
Description
Postoperative area under the curve (AUC) within the first two postoperative days of concentrations of Procalcitonin (PCT).
Time Frame
First two postoperative days
Title
Postoperative CRP concentrations (mg/dl)
Description
Postoperative area under the curve (AUC) within the first two postoperative days of concentrations of C-reactive protein (CRP).
Time Frame
First two postoperative days
Title
Postoperative Copeptin concentrations (pmol/L)
Description
AUC within the first two postoperative days of concentrations of Copeptin.
Time Frame
First two postoperative days
Title
Postoperative TnT concentrations (ng/L)
Description
AUC within the first two postoperative days of concentrations of TnT.
Time Frame
First two postoperative days
Title
Postoperative NT-proBNP concentrations (pg/ml)
Description
AUC within the first two postoperative days of concentrations of NT-proBNP.
Time Frame
First two postoperative days
Title
Postoperative S100-B concentrations (µg/L)
Description
AUC within the first two postoperative days of concentrations of S100-B.
Time Frame
First two postoperative days
Title
Postoperative NSE concentrations (µg/L)
Description
AUC within the first two postoperative days of concentrations of NSE.
Time Frame
First two postoperative days
Title
All-cause death within one year after surgery
Description
All cause one-year mortality.
Time Frame
One year after surgery

10. Eligibility

Sex
All
Minimum Age & Unit of Time
65 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria: Provide written informed consent ≥65 years of age Scheduled for elective major noncardiac surgery with estimated time of surgery ≥ 2 hours Exclusion Criteria: Patients undergoing emergency surgery BMI > 45 kg/m^2 History of diagnosed dementia Language, vision, or hearing impairments that may compromise cognitive assessments History of malignant hyperthermia History of structural muscle disease History of organ transplantation (kidney, liver, lung, heart) Patients undergoing hyperthermic intraperitoneal chemotherapy ICU patients undergoing surgery
Central Contact Person:
First Name & Middle Initial & Last Name or Official Title & Degree
Alexander Taschner, MD
Phone
0043 1 40400
Ext
20760
Email
alexander.taschner@meduniwien.ac.at
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Christian Reiterer, Prof. MD
Organizational Affiliation
Medical University of Vienna
Official's Role
Principal Investigator
Facility Information:
Facility Name
Medical University of Vienna
City
Vienna
ZIP/Postal Code
1090
Country
Austria
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Christian Reiterer, MD
Phone
0043 1 40400
Ext
20760
Email
christian.reiterer@meduniwien.ac.at

12. IPD Sharing Statement

Plan to Share IPD
No

Learn more about this trial

The Effect of Desflurane Versus Sevoflurane Versus Propofol on Postoperative Delirium

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