Transverse vs. Longitudinal Serratus Anterior Plane Block in Breast Surgery

Sponsor
Ankara Etlik City Hospital
Study ID
NCT07739277
Status
Recruiting
Apply to this trial

Conditions

  • Acute Pain
  • Breast Surgery
  • Fascial Plane Block
  • Mastectomy
  • Pain, Postoperative

Eligibility Criteria

Sex
ALL
Age
18 Years - 65 Years
Healthy Volunteers
Not accepted

Interventions

  • Transverse SAP Block — PROCEDURE
    Transverse serratus anterior plane block will be performed on the patients using 20 mL of 0.375% bupivacaine under ultrasound guidance.
  • Longitudinal SAP Block — PROCEDURE
    Longitudinal serratus anterior plane block will be performed on the patients using 20 mL of 0.375% bupivacaine under ultrasound guidance.

Study Details

The aim of this prospective, randomized controlled trial is to compare the analgesic efficacy of transverse versus longitudinal ultrasound probe orientations during Serratus Anterior Plane (SAP) block in patients undergoing breast surgery. The study hypothesizes that the longitudinal approach (probe parallel to the ribs) may provide better craniocaudal spread of the local anesthetic, thereby resulting in lower postoperative Visual Analog Scale (VAS) scores and reduced opioid consumption compared to the standard transverse approach.

Key Dates

First listed
Jul 31, 2026
Start date
Aug 6, 2026
Status verified
Aug 2026
Primary completion
Feb 8, 2027
Completion
Feb 19, 2027

Study Design

Enrollment
70 participants (estimated)
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT

Arms

  • Active Comparator: Transverse SAP Block
    Patients will receive an ultrasound-guided Serratus Anterior Plane (SAP) block at the 4th rib level. The ultrasound probe will be placed in a transverse orientation (perpendicular to the ribs). A total of 20 mL of 0.375% bupivacaine will be injected into the fascial plane.
  • Active Comparator: Longitudinal SAP Block
    Patients will receive an ultrasound-guided Serratus Anterior Plane (SAP) block at the 4th rib level. The ultrasound probe will be placed in a longitudinal orientation (parallel to the ribs in the craniocaudal axis). A total of 20 mL of 0.375% bupivacaine will be injected into the fascial plane.

Primary Outcome Measure

Postoperative Pain Intensity [ Time Frame: 4 hour after surgery ]

Central Contacts

Related Studies