Comparison of Combined (Superficial and Deep) and Isolated Deep Serratus Anterior Plane Blocks After Breast Surgery

September 1, 2026 updated by: Cemre Kahya Ozgunalp, SBU Ankara Egitim ve Arastirma Hastanesi

Investigation of the Effectiveness of Ultrasonography-Guided Deep Serratus Anterior Plane Block and Combined Superficial and Deep Serratus Anterior Plane Block on Postoperative Pain in Patients Undergoing Modified Radical Mastectomy and Breast-Conserving Surgery

The main purpose of this study is to compare the effectiveness of two different regional anesthesia techniques for pain management after oncological breast surgeries. The researchers will compare the combined (superficial and deep) serratus anterior plane block with the deep serratus anterior plane block. The study aims to evaluate which method provides better postoperative pain relief, reduces the total consumption of opioid analgesics, and improves patient comfort

Study Overview

Status

Status

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

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.

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 (Actual)

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.
76

Contacts and Locations

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

Study Locations

  • Turkey (Türkiye)
    • Ankara
      • Altındağ, Ankara, Turkey (Türkiye), 00000
        • Ankara 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

Patients undergoing elective modified radical mastectomy or breast-conserving surgery at SBU Ankara Egitim ve Arastirma Hastanesi

Description

Inclusion Criteria:

Patients aged 18-80 years.

Female patients with ASA physical status I, II, or III.

Patients scheduled for elective modified radical mastectomy or breast-conserving surgery.

Patients who provided written and verbal informed consent.

Exclusion Criteria:

Patients with ASA physical status IV-V.

Patients with a BMI ≥ 35 kg/m².

Patients with chronic pain, opioid/substance addiction, or long-term analgesic use.

Patients requiring emergency surgery.

Pregnant patients.

Known allergy to local anesthetics.

Severe cardiovascular, cerebrovascular, liver, or renal disease.

History of coagulopathy.

Infection at the injection site or systemic infection.

Patients who refuse the regional anesthesia technique, cannot speak the official language, or have mental disabilities/inability to cooperate.

Patients with a history of previous breast surgery or those scheduled for bilateral operations.

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.
Combined Serratus Anterior Plane Block Group
Patients receiving both superficial and deep serratus anterior plane block
Isolated Deep Serratus Anterior Plane Block Group
Patients receiving only deep serratus anterior plane block

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
Visual Analog Scale (VAS) Scores for Postoperative Pain
Time Frame: Postoperative 24 hours.
Assessment of postoperative pain using the Visual Analog Scale (VAS) (minimum score: 0, maximum score: 10, where higher scores indicate worse outcome).
Postoperative 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
Total Tramadol Consumption
Time Frame: Postoperative 24 hours.
Total amount of tramadol consumed by the patient as rescue analgesia.
Postoperative 24 hours.
Need for rescue analgesia
Time Frame: Postoperative 24 hours.
Requirement for additional analgesic medications beyond the standard protocol.
Postoperative 24 hours.
Time to first rescue analgesia
Time Frame: Postoperative 24 hours.
Time elapsed from the end of surgery until the first request for rescue analgesia.
Postoperative 24 hours.
Postoperative nausea and vomiting (PONV) scores
Time Frame: Postoperative 24 hours.
Assessment of postoperative nausea and vomiting severity.
Postoperative 24 hours.
Patient satisfaction
Time Frame: Postoperative 24 hours.
Patient satisfaction level regarding the pain management technique.
Postoperative 24 hours.
Block-related complications
Time Frame: Postoperative 24 hours.
Incidence of potential complications related to the block technique (e.g., hematoma, infection, local anesthetic toxicity).
Postoperative 24 hours.

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.
SBU Ankara Egitim ve Arastirma Hastanesi

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.
  • Study Director: Meltem Bektas, Associate Professor, SBU Ankara Egitim ve Arastirma Hastanesi
  • Study Director: Dilara Hatice Arican, MD, SBU Ankara Egitim ve Arastirma Hastanesi
  • Principal Investigator: Cemre Kahya Özgünalp, MD, SBU Ankara Egitim ve Arastirma Hastanesi

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.
April 21, 2025

Primary Completion (Actual)

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.
January 28, 2026

Study Completion (Actual)

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.
May 18, 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).
July 17, 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.
July 21, 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.
July 24, 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.
September 4, 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.
September 1, 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.
July 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.
  • E.25/447

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

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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