Ultrasound Guided Bilateral Pectoral Nerve Block Versus Bilateral Transverse Thoracic Plane Block In Pediatric Patients Undergoing Corrective Cardiac Surgeries Requiring Cardiopulmonary Bypass Via Median Sternotomy

Patients will receive o.5 ug/kg/hr fentanyl infusion all through the whole operation.

This group will receive fentanyl infusion at a dose of (0.5 μg/kg/hr) all through the whole operation, plus ultrasound guided bilateral pectoral nerves (PECS) Block which will be done by injecting 0.4 ml/kg (1:1 solution of bupivacaine 0.25% and lidocaine 1%) at each side .

This group will receive fentanyl infusion at a dose of (0.5 μg/kg/hr) all through the whole operation, plus Ultrasound guided bilateral transversus thoracic muscle plane block (TTPB) which will be done by injecting 0.4 ml/kg (1:1 solution of bupivacaine 0.25% and lidocaine 1%) at each side .