NCT05147714

Brief Summary

Postoperative pain management has an important role in anesthesia practice. In order to ensure postoperative patient comfort, postoperative rehabilitation should start early and be managed effectively1. It is known that if adequate analgesia is not provided before the patient wakes up, the severity of pain and the total opioid consumption increases. This increased opioid use causes complications such as nausea, vomiting, constipation, increased sleepiness and respiratory depression2. For this reason, the provision of adequate analgesia before the patient is awakened from general anesthesia has an important place in the process. Measurement of pain has different characteristics in patients under sedation or general anesthesia compared to conscious patients. However, since it is not possible for the patient to define pain under general anesthesia, different measurement and evaluation methods are needed. In order to monitor the intraoperative balance between nociception and antinociception, several non-invasive methods with different physiological approaches have been researched and made available for use in the last decade. The aim of these methods is individualize the intraoperative and postoperative opioid dose3. In this context, it has been suggested that the Surgical Pleth Index (SPI) method can be used in the evaluation of the analgesic component of anesthesia.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
52

participants targeted

Target at P25-P50 for all trials

Timeline
Completed

Started Jan 2019

Typical duration for all trials

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

January 1, 2019

Completed
2.4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

June 1, 2021

Completed
5 months until next milestone

Study Completion

Last participant's last visit for all outcomes

November 8, 2021

Completed
28 days until next milestone

First Submitted

Initial submission to the registry

December 6, 2021

Completed
1 day until next milestone

First Posted

Study publicly available on registry

December 7, 2021

Completed
Last Updated

June 12, 2026

Status Verified

December 1, 2021

Enrollment Period

2.4 years

First QC Date

December 6, 2021

Last Update Submit

June 10, 2026

Conditions

Keywords

Surgical pleth indexCraniotomy

Outcome Measures

Primary Outcomes (1)

  • Acute Postoperative Pain

    Postoperative pain intensity was assessed using the Numeric Rating Scale (NRS). The NRS is an 11-point scale ranging from 0 to 10, where 0 indicates no pain and 10 indicates the worst pain imaginable. Higher scores indicate greater pain intensity.

    Postoperative 30 minutes

Interventions

SPI data were recorded at one-minute intervals during the last five minutes (6 times in total) until the entropy value reached 60

Eligibility Criteria

Age18 Years - 65 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)
Sampling MethodNon-Probability Sample
Study Population

Patients aged 18 to 65 years with ASA physical status I-III who received craniotomy and intracranial mass excision in the ITF Neurosurgery Clinic were enrolled in the study after providing written informed consent

You may qualify if:

  • Aged 18 to 65 years
  • ASA physical status I-III
  • Who received craniotomy and intracranial mass excision

You may not qualify if:

  • Diagnosed diabetic neuropathy
  • Using pacemaker
  • Needing vasoactive agent during the observation
  • Using ketamine
  • Using agents such as beta-blockers, beta-agonists, sympatholytic agents, atropine, neostigmine that will affect the sympatho-vagal balance during the observation period
  • The patients who could not provide sufficient cooperation for scoring were not included in the study.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Istanbul University

Istanbul, 34093, Turkey (Türkiye)

Location

MeSH Terms

Conditions

Acute PainAgnosia

Condition Hierarchy (Ancestors)

PainNeurologic ManifestationsSigns and SymptomsPathological Conditions, Signs and SymptomsPerceptual DisordersNeurobehavioral ManifestationsNervous System Diseases

Study Officials

  • Mukadder Orhan Sungur, Prof.

    Istanbul University

    STUDY DIRECTOR

Study Design

Study Type
observational
Observational Model
COHORT
Time Perspective
PROSPECTIVE
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Resident at Anesthesiology and Reanimation

Study Record Dates

First Submitted

December 6, 2021

First Posted

December 7, 2021

Study Start

January 1, 2019

Primary Completion

June 1, 2021

Study Completion

November 8, 2021

Last Updated

June 12, 2026

Record last verified: 2021-12

Data Sharing

IPD Sharing
Will not share

Locations