Analgesic Strategies After Mastectomy: RIB vs RIB + DPIPB

This retrospective observational study evaluates postoperative pain outcomes in patients undergoing elective mastectomy who received systemic analgesia, rhomboid intercostal block (RIB), or combined rhomboid intercostal block with deep parasternal intercostal plane block (RIB + DPIPB). Medical records from October 2024 to October 2025 will be reviewed. Primary outcomes include pain scores within the first 24 hours, with secondary outcomes including opioid consumption, additional analgesic requirements, patient satisfaction, and early postoperative complications. All data will be analyzed retrospectively and anonymously.

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Key information

Conditions

Postoperative Pain Neurologic Manifestations Pain Pain, Postoperative Pathologic Processes Pathological Conditions, Signs and Symptoms Postoperative Complications Signs and Symptoms

Age range

18 year–70 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Istinye Üniversity

Istanbul, Merkez Mahallesi, 34250, Turkey (Türkiye)

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Female patients aged 18-70 years
Elective mastectomy performed between October 2024 and October 2025
ASA physical status I-III
Complete postoperative pain and analgesia records for the first 24 hours
Clearly documented analgesic technique (systemic analgesia, RIB, or RIB + DPIPB)

Exclusion criteria

Incomplete or missing medical records
Emergency mastectomy or emergency surgery
Reoperation within the first 24 hours postoperatively
Major intraoperative complications preventing standard analgesia
Neurological or psychiatric conditions interfering with pain assessment

Treatment and study plan

Analgesic Strategy

Other

Systemic Analgesia:

Postoperative pain was managed using standard systemic analgesic medications as part of routine clinical care.

Rhomboid Intercostal Block (RIB):

Postoperative analgesia was provided using an ultrasound-guided rhomboid intercostal block performed as part of routine clinical practice.

RIB + Deep Parasternal Intercostal Plane Block (DPIPB):

Postoperative analgesia was provided using a combination of ultrasound-guided rhomboid intercostal block and deep parasternal intercostal plane block as part of routine clinical care.

Primary outcomes

Postoperative Pain Score (VAS)

Time frame: Within the first 24 hours after surgery (postoperative 1, 6, 12, and 24 hours).

Postoperative pain intensity assessed using the Visual Analog Scale (VAS) based on routinely recorded clinical data.

Study contacts

Contact information is provided by the study sponsor or research team.

Ilke Dolgun

CONTACT

[email protected]

+905555485632

Sponsors and collaborators

Lead sponsor

Istinye University

Other

Registry information

Official study title

A Retrospective Evaluation of Systemic Analgesia, Rhomboid Intercostal Block, and Combined Rhomboid Intercostal Block With Deep Parasternal Intercostal Plane Block After Mastectomy

Important dates

Study start: 2026
Primary completion: 2026
Study completion: 2026
First posted: Feb 10, 2026
Registry last updated: Feb 10, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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