Observation on Administration of Propofol at Different Titration Endpoints

Summary

Propofol has a rapid onset and short duration of action, making it widely used for induction of general anesthesia. However, its prominent drawback is circulatory depression. Our research team previously proposed an individualized dosing method for the titration of propofol. We then compared the effects of different titration rates of propofol on hemodynamics and stress during general anesthesia induction. It was found that the incidence of hypotension during the induction period was lower in the 0.5 mg/kg/min group, with lower stress levels and faster postoperative recovery. However, this group still had a 25.3% incidence of hypotension. Therefore, we plan to further study the differences in hemodynamics, depth of anesthesia, stress response, and postoperative recovery in three groups of patients induced with a constant infusion rate of propofol at 0.5 mg/kg/min titrated to an OAA/S score of 1, an OAA/S score of 2, and BIS ≤ 60, combined with remifentanil 2 μg/kg. This study aims to explore the appropriate propofol titration endpoint during general anesthesia induction to maintain stable perioperative haemodynamics and achieve rapid postoperative recovery.

Conditions

• Anesthesia, General
• Hemodynamics

Interventions

PROCEDURE

Titrated administration of propofol to an OAA/S score of 1 as the endpoint

Propofol is titrated at a rate of 0.5 mg/kg/min to achieve an OAA/S score of 1, followed by a maintenance dose of 2-4 mg/kg/h, concurrently with remifentanil 2 ug/kg and rocuronium 0.6 mg/kg for anesthesia induction.

PROCEDURE

Titrated administration of propofol to an OAA/S score of 2 as the endpoint

Propofol is titrated at a rate of 0.5 mg/kg/min to achieve an OAA/S score of 2, followed by a maintenance dose of 2-4 mg/kg/h, concurrently with remifentanil 2 ug/kg and rocuronium 0.6 mg/kg for anesthesia induction.

PROCEDURE

Titrated administration of propofol to a BIS value ≤ 60 as the endpoint

Propofol is titrated at a rate of 0.5 mg/kg/min to achieve a BIS value ≤ 60, followed by a maintenance dose of 2-4 mg/kg/h, concurrently with remifentanil 2 ug/kg and rocuronium 0.6 mg/kg for anesthesia induction.

Sponsors & Collaborators

• SanQing Jin

  lead OTHER

Principal Investigators

• SanQing Jin, MD · The Sixth Affiliated Hospital, Sun Yat-sen University

Study Design

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

TRIPLE

Model

PARALLEL

Eligibility

Min Age

18 Years

Max Age

60 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2025-02-20

Primary Completion

2025-06-20

Completion

2025-08-20

Countries

• China

Study Locations