Effect of Different Volumes of Erector Spinae Plane Block on Postoperative Opioid Consumption After Total Abdominal Hysterectomy

Comparison of the Effectiveness of Erector Spinae Plane Block Administered at Different Volumes on Postoperative Opioid Consumption and Analgesia in Patients Undergoing Total Abdominal Hysterectomy: A Randomized, Prospective, Double-Blind Study

his study aims to investigate the effects of different volumes of ultrasound-guided erector spinae plane block (ESPB) on postoperative pain and opioid consumption in patients undergoing total abdominal hysterectomy. The researchers aim to determine whether varying the volume of local anesthetic in the ESPB can reduce the amount of morphine required by patients and improve pain scores during the first 24 hours after surgery.

Inclusion Criteria:

• Patients aged between 18 and 65 years.
• Patients with American Society of Anesthesiologists (ASA) physical status I-III.
• Patients scheduled to undergo elective total abdominal hysterectomy surgery.

Exclusion Criteria:

• Obese patients (Body Mass Index > 30 kg/m²).
• Patients with local skin infection at the site of needle insertion.
• Patients with a known allergy to any of the medications used in the study.
• Patients with coagulopathy.
• Patients with chronic opioid consumption.
• Patients with an inability to use the Patient-Controlled Analgesia (PCA) device.
• Patients with advanced hepatic or renal failure.
• Patients who refuse to participate in the study.