Comparison of Postoperative Outcomes Between Surgeries Anaesthetized With Propofol and Inhalational Anaesthetics

The University of Hong Kong (HKU)

Status: Completed

Conditions: Acute Pain

Treatments: Drug: Propofol; Drug: inhalation anaesthetics

Study type: Observational

Funder types: Other

Identifiers

NCT03875872

UW19-182

Details and patient eligibility

About

Propofol used as anaesthesia in surgery had shown small postoperative analgesic benefits over inhalational anaesthetics in some meta-analyses. It was also associated with reduced risk of postoperative nausea and vomiting. Small sample of studies together with high heterogeneity prevented some meta-analyses to confirm propofol's effect for postoperative morphine consumption and other outcomes. Acute Pain Service data bank can provide an alternative way of evaluating postoperative outcomes of propofol anaesthetics through supplying a very large sample size in a more homogeneous setting. Retrospective study comparing propofol and inhalational anaesthetics on postoperative pain matched on patients' demographic and clinical data had been done for liver surgery. Propofol's benefits for postoperative pain and morphine consumption was confirmed but not for adverse effects.

This study plans to analyze the postoperative outcome data from an Acute Pain Service data bank in years 2015-17 to compare the anaesthetics of propofol and inhalational anaesthetics. Comprehensive regression adjustment for confounders are performed using all available patients' demographic, clinical and anaesthetic data. All major surgery types are included. Results will provide postoperative outcome differences between propofol and inhalational anaesthetics for all surgeries and for specific type of surgeries. The large sample bank will provide higher probability for detecting outcome difference between the anaesthetics for all the major surgical types.

Full description

Objective: To compare the postoperative outcomes between surgeries anaesthetized with propofol and inhalational anaesthetics in the Acute Pain Service records of Queen Mary Hospital for years 2015-17

Methods:

Retrospective

Data collection

1. Demographic data;
2. Type of surgery;
3. Type of anaesthetic techniques;
4. Postoperative NRS pain scores (Rest and Moving) for Postop Days 1, 2 & 3;
5. Accumulated amount of patient controlled analgesia (PCA) used in Postop Days 1, 2 & 3;
6. Postoperative incidence of nausea, vomitting, dizziness and pruritus.

Enrollment: 3,922 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Postoperative outcomes from Acute Pain Service data bank between Jan 2015 and Dec 2017 in Queen Mary Hospital would be retrieved;
2. Surgeries with general anaesthesia by either propofol or inhalational anaesthetics.

Exclusion criteria

1. Essential data missed;
2. Surgical types with small sample size below 30 for the data collection period.

Trial design

3,922 participants in 2 patient groups

Group propofol

Description:

Patients who had surgeries and were anaesthetized with propofol at Queen Mary Hospital, Hong Kong from Jan 2015 to Dec 2017

Treatment:

Drug: Propofol

Group inhalation anaesthetics

Description:

Patients who had surgeries and were anaesthetized via inhalation at Queen Mary Hospital, Hong Kong from Jan 2015 to Dec 2017

Treatment:

Drug: inhalation anaesthetics