Ultrasound-guided Erector Spinae Plane Block Versus Paravertebral Block for Perioperative Analgesia in Patients Undergoing Open Splenectomy

Ultrasound-guided Erector Spinae Plane Block Versus Paravertebral Block for Perioperative Analgesia, a Randomized Double Blinded Controlled Trial

There are very few randomized controlled trials in open splenectomy surgery, which compare paravertebral block with ESP block. The purpose of this randomized controlled trial is to compare the efficacy of ultrasound-guided paravertebral block with ESP block for perioperative analgesia in open splenectomy .

Inclusion Criteria:

• patients who will be scheduled for indicated open splenectomy surgery in the supine position via left subcostal ,midline or letf subcostal with midline extention incisions
• physical status American Society of Anesthesiologists (ASA) II or III.

Exclusion Criteria:

• Patients who refuse to participate
• patients with body mass index (BMI) >35 kg/m2
• infection at the site of injection
• coagulopathy, severe thrombocytopenia <50×103
• spine deformity
• history of opioid dependence
• polytrauma patients with dorsal spine fracture
• urgent abdominal exploration for splenectomy in heamodynamically unstable patients
• history of allergy to opioids or local anesthetics
• history of allergy to opioids, or local anaesthetics.