Compare the Perioperative Analgesic Effect of Ultrasound Guided Thoracic Paravertebral Block and Ultrasound Guided Serratus Anterior Block in Patients Undergoing Thoracotomy

Analgesic Efficacy of Ultrasound-guided Serratus Anterior Plane Block Versus Thoracic Paravertebral Plane Block in Patients Undergoing Thoracotomy

The aim of this study is to compare the perioperative analgesic effect of ultrasound guided thoracic paravertebral block and ultrasound guided serratus anterior block in patients undergoing thoracotomy.

randomized, comparative study General anesthesia will be conducted

Inclusion Criteria:

• : Patients 20 to 60 years old
• ASA physical status of class II and III.

Exclusion Criteria:

Patients with severe respiratory disease

• preexisting neurologic deficit
• allergy to any of the study drug
• kypho-scoliosis
• presence of local infection
• on current chronic analgesic therapy, having history of opioid dependence'
• patient refusal
• inablity to communicate with the investigators
• who will require postoperative mechanical ventilation .