Comparison between Ultrasound guided External Oblique Intercostal Plane Block and Thoracic Erector Spinae block for Post Thoracotomy Pain

This prospective double-blinded randomized study will be conducted to evaluate the analgesic efficacy of Ultrasound-guided External Oblique Intercostal Plane Block (EOIB) versus The analgesia provided by erector spinal block after Thoracotomy incision and possible complications in both groups. This prospective double-blinded randomized study will be carried out in Tanta University Hospitals in the Cardiothoracic Surgery Department for 6 months from November 2022 to April 2023 on 60 patients of both genders scheduled for thoracic surgery operated through open thoracotomy incision.Study duration: 6 months from November 2022 to April 2023 Inclusion criteria:Patients scheduled for Thoracic surgery aged between 21- 65 years of both genders, and have ASA I and II.Exclusion criteria:Patient refusal, presence of Infection at the injection site and patients with a history of allergy to local anaesthetics.60 patients will be equally divided to two equal groups (30 patients for each group)Group 1: Ultrasound-guided External Oblique Intercostal Plane Block Group 2: Ultrasound-guided Erector Spinae Block (ESB) Block will be performed after General anaesthesia induction using the same anaesthetic mixture (30 ml plain bupivacaine 0.25%) injected at the level of the 5th rib in the post-axillary line. - the following will be measured:- 1- Demographic data as (age, sex, Weight, BMI, indication and duration of surgery). 2- Hemodynamic Parameters: mean arterial blood pressure, and heart rate (MAP & HR) will be recorded before block performance at T0 after surgery at T (0, 6, 12, 18, 24 hours) where T0 = before discharge from PACU.3- Total opioid consumption (morphine) at the first 24 h after surgery.4- Numeric Rating scale (NRS): NRS will be assessed after surgery over 24 hours during rest and with cough 5- Time to first rescue analgesic requirement after surgery 6- Adverse events as Pneumothorax, and local Anaesthetic systemic toxicity.