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Effect of Pupilometer Guided Analgesia on Postoperative Pain

NCT03794271 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 84

Last updated 2019-08-12

No results posted yet for this study

Summary

In this study, the investigators measure a pupil size every 5 minutes during the operation in patients undergoing laparoscopic cholecystectomy under general anesthesia. The investigators would compare the postoperative pain intensity between the group adjusted the anesthetic drug concentration based on the changes of the pupil (Pupil group) and the group based on the changes of a surgical pleth index (SPI group).

Conditions

  • Cholecystectomy, Laparoscopic
  • Anesthesia, General
  • Reflex, Pupillary

Interventions

PROCEDURE

Pupilometer guided anesthesia

At least 10 min after anesthesia induction by target-controlled infusion of propofol and remifentanil, baseline values for pupillary diameter is recorded before any surgical procedure. During the operation, propofol effect-site target concentration (Ce) is adjusted to maintain the bispectral index (BIS) value between 40 and 60. Remifentanil Ce is adapted every 5 min based on the changes of pupillary diameter. If the pupillary diameter is increased by more than 30% compared to baseline value, remifentanil concentration is increased by 0.5 ng/ml. If the pupillary diameter is maintained between 5 and 30 % change compared with baseline, remifentanil is not modified. In a case of pupillary diameter is decreased less than 5 % change of baseline, remifentanil concentration is decreased by 0.5 ng/ml.

PROCEDURE

SPI guided anesthesia

During the operation, SPI value should be maintained between 20 and 50 by changing the infusion rate of remifentanil. Even if the SPI is maintained within the target range, the remifentanil infusion rate is increased by 0.5 ng/ml in a case of the SPI value suddenly arises by more than 10.

Sponsors & Collaborators

  • Daegu Catholic University Medical Center

    lead OTHER

Principal Investigators

  • Eugene Kim, MD, PhD · Assistant professor

Study Design

Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
TRIPLE
Model
PARALLEL

Eligibility

Min Age
20 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2019-01-03
Primary Completion
2019-05-09
Completion
2019-05-10

Countries

  • South Korea

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03794271 on ClinicalTrials.gov