Using ANI-guided analgesia to improve bowel recovery after colorectal surgery

Effects of Analgesia Nociception Index (ANI)-Guided Analgesia on Postoperative Bowel Function Recovery in Laparoscopic Colorectal Surgery: A Prospective Randomized-controlled Study

Not applicable Interventional Gangnam Severance Hospital · NCT05122078

This study tests if adjusting pain medication based on a special monitoring system can help people recover their bowel function faster after colorectal surgery compared to regular monitoring methods.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment80 (estimated)
Ages19 Years and up
SexAll
SponsorGangnam Severance Hospital Academic / other
Locations1 site (Seoul)
Trial IDNCT05122078 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the impact of Analgesia Nociception Index (ANI)-guided analgesia on the recovery of bowel function following laparoscopic colorectal surgery. Patients will be randomly assigned to either an ANI group, where the remifentanil infusion rate is adjusted based on ANI monitoring, or a Control group, where adjustments are made using traditional blood pressure and heart rate monitoring. The study aims to evaluate and compare bowel function recovery between these two groups post-surgery.

Who should consider this trial

Good fit: Ideal candidates are adults over 19 years old scheduled for laparoscopic colorectal surgery due to colorectal cancer.

Not a fit: Patients undergoing emergency surgery or those with certain medical histories, such as arrhythmias or chronic opioid use, may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could lead to improved bowel recovery times for patients undergoing colorectal surgery.

How similar studies have performed: While the ANI-guided approach is relatively novel, similar studies have shown promising results in optimizing analgesia and improving postoperative outcomes.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients over 19 years who undergo laparoscopic colorectal surgery for colorectal cancer at Gangnam Severance Hospital, Seoul, South Korea.

Exclusion Criteria:

* Emergency surgery
* Patients with history of open abdominal surgery
* Patients with arrhythmia
* Patients with pacemaker insertion
* Patients with history of heart transplantation
* Patients taking medications that may affect ANI (antimuscarinics, alpha-agonists, beta blockers)
* Patients with chronic opioid medication.
* Cognitive impairment
* Unable to read consent form (eg illiterate, foreigner, etc.)

Where this trial is running

Seoul

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Postoperative Bowel Function RecoveryAnalgesia Nociception Index
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.