The Impact of Video-assisted Thoracic Surgery and Regional Anaesthesia on Postoperative Opioid Consumption and Pain Scores

May 6, 2026 updated by: Antalya Training and Research Hospital

The Effect of Paravertebral Block, Intertransverse Block, and Erector Spinae Plane Block on Postoperative Opioid Consumption and Pain Scores in Video-assisted Thoracic Surgery: a Prospective Observational Study

This present study aims is to compare the effects of ultrasound-guided paravertebral block, intertransverse process block, and erector spinae plane block on postoperative opioid consumption, and pain scores in patients undergoing VATS.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Video-assisted thoracic surgery (VATS) has become increasingly popular in Thoracic Surgery due to faster recovery and less postoperative pain compared to thoracotomy. However, although VATS has been reported to cause less postoperative pain than thoracotomy, it has also been shown to significantly increase the risk of acute and chronic postoperative pain, which negatively impacts postoperative pain recovery. Inadequate postoperative pain management can reduce the quality of a patient's recovery and increase the risk of postoperative pulmonary complication. Therefore, controlling pain in patients undergoing VATS is key to ensuring early mobilisation, and minimising the risk of pulmonary complications. Regional anaesthesia techniques are an important part of multimodal analgesia approach in patients undergoing VATS. The aim of the present study is to compare the effects of ultrasound-guided regional anaesthesia techniques on postoperative opioid consumption, and pain scores in patients undergoing VATS.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
96

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

  • Name: Batuhan Kilic
  • Phone Number: +905319001549

Study Locations

  • Turkey (Türkiye)
    • Muratpaşa
      • Antalya, Muratpaşa, Turkey (Türkiye)
        • Recruiting
        • University of Health Sciences, Antalya Training and Research Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

It is planned to include ASA score I-III adult patients who are planned to undergo elective VATS

Description

Inclusion Criteria:

  • aged 18-75 years
  • American Society of Anaesthesiology (ASA) score I-III
  • body mass index (BMI) <35kg/m2
  • scheduled for elective VATS

Exclusion Criteria:

  • ASA score ≥4
  • BMI ≥35 kg/m2
  • declining to give written informed consent
  • controendications for block application
  • inability to undergo block application
  • history neurological disease or peripheral nerve disease
  • history of chronic opioid use
  • history of severe liver or kidney failure
  • patients admitted to the intensive care unit postoperatively intubated

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Erector spinae plane block group
Before the surgery, ultrasoud-guided erector spinae plane block will be performed
Other: Erector spinae plane block group
Before the surgery, ultrasoud-guided erector spinae plane block will be performed before the surgery under standart anaesthesia monitoring
Paravertebral block group
Before the surgery, ultrasoud-guided paravertebral block will be performed
Other: Paravertebral block group
Before the surgery, ultrasoud-guided paravertebral block will be performed before the surgery under standart anaesthesia monitoring
İntertransverse process block group
Before the surgery, ultrasoud-guided intertransverse process block will be performed
Other: İntertransverse process block group
Before the surgery, ultrasoud-guided intertransverse process block will be performed before the surgery under standart anaesthesia monitoring

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Postoperative opioid consumption
Time Frame: 24 hours
All patients will receive a standard patient analgesia (PCA) protocol after operation. The postoperative opioid consumption will only be recorded.
24 hours

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Postoperative Numerical Rating Scale (NRS) pain scores
Time Frame: postoperative 24 hours
The postoperative pain intensity will be assessed with the Numerical Rating Scale (NRS) score (0=no pain; 10=most severe pain).
postoperative 24 hours
Chronic pain
Time Frame: 3 months
Patients will be telephoned 3 months after the surgery and the presence, localization, intensity of the pain , its character, and its relation with rest and/or activity will be recorded by asking only verbally.
3 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Antalya Training and Research Hospital

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Sadik Ozmen, University of Health Sciences, Antalya Training and Research Hospital
  • Principal Investigator: Batuhan Kılıc, University of Health Sciences, Antalya Training and Research Hospital
  • Principal Investigator: Hacer Boztepe Yesilcay, University of Health Sciences, Antalya Training and Research Hospital

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
May 4, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 4, 2026

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
November 4, 2026

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
April 21, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 6, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
May 11, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
May 11, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 6, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 7/24

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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