About this trial
This prospective observational study aims to evaluate the relationship between ultrasound-derived rectus abdominis muscle thickness and thickening fraction and postoperative opioid consumption in geriatric patients undergoing abdominal surgery. Preoperative ultrasonographic measurements will be performed during routine clinical care, and postoperative pain scores and analgesic requirements will be recorded within the first 24 hours. The findings may help improve individualized analgesic strategies by identifying patient-specific predictors of postoperative opioid needs.
Eligibility criteria
Qualifiers
Age ≥65 years
Scheduled for elective midline abdominal surgery
ASA physical status I-III
Planned to receive bilateral ultrasound-guided rectus sheath block as part of routine clinical practice
Disqualifiers
Known allergy or hypersensitivity to local anesthetics
Infection or skin lesion at the injection site
Systemic infection or sepsis
Coagulopathy (INR >1.5 or platelet count <100,000/mm³)
Trial design
Treatments tested in this trial
- Ultrasound-Guided Rectus Sheath Block