Vitamin C will be given before admission in the immediate preoperative preceding 7 days (the dose 30 -45 mg per day ) in oral drops preparations
Inflammatory markers including CRP , TLC ,PNI , GPS NLR will be checked on admission and on discharge and compared between cases and controls Hospital length stay will also be compared between the two groups
Children in the first two years who will be for corrective surgery for heart diseases congenital heart diseases
Pediatric patients whose parents or caregivers agree to be enrolled in the study.
Risk Adjustment for Congenital Heart Surgery -1 (RACHS-1) for Evaluation of Mortality in Children Undergoing Cardiac Surgery : the first two categories (Thiagarajan and C. Laussen 2015)
Pediatric patients with associated comorbid conditions.