The serratus anterior plane block (SAPB) is an anterolateral thoracic wall block that was described in 2013 by Blanco et al. who presented it as an alternative to other regional anesthetic techniques. It has been described in adults as an adjunct to general anesthesia or as a primary anesthetic technique for breast surgery, it has not been widely utilized as a primary anesthetic technique in the pediatric population. It was designed to block primarily the thoracic intercostal nerves and to provide complete analgesia of the lateral part of the thorax. It provides a viable alternative to paravertebral blockade and central neuraxial block in this patient population The investigators believe that the bilateral two-level injection technique may provide effective analgesia as its efficacy was not properly investigated in corrective heart surgeries with median sternotomy in the pediatric population.

Inclusion Criteria:

• Risk Adjustment for Congenital Heart Surgery (RACHS) category 1,2 and 3 Pediatric patients undergoing corrective congenital cardiac surgeries via a median sternotomy

Exclusion Criteria:

• Refusal of legal guardian.
• Patient with congestive heart failure .
• Patient undergoing Redo cardiac surgery.
• Known allergy to local anesthetics.
• Infection at injection site.
• Bleeding disorders (drug induced i.e., coumadin; or genetic i.e. hemophilia; or acquired i.e. DIC), coagulopathy: PTT > 40 seconds, INR > 1.4, platelet count < 100x10⁹.
• severe renal impairment (estimated Glomerular filtration rate less than 30ml/min/1.73m2) or hepatic insufficiency (Child-Pugh Class B and C).
• Neurological disorders because it will be difficult to assess their pain score (e.g. cerebral palsy).