The Comparison of the Effect of Handmade Del Nido and St. Thomas Cardioplegia Solutions on Quantitative Levels of Troponin I and Creatine Kinase-Myocardial Band (CPK-MB) in Repair of Pediatric Ventricular Septal Defect

The most common cardioplegic solutions in pediatric cardiac surgery are Del Nido and St. Thomas. The aim of this study was to compare of the effect of these two solutions on cardiac protection, and prevention of myocardial injury during the aortic clamp time.

This randomize clinical trial study was accomplished on 60 children under 12 years who were candidates for large ventral septal defect (VSD) repair surgery at Shahid Chamran hospital in Isfahan, Iran. One of handmade St. Thomas or Del Nido cardioplegic solutions was used randomly for electromechanical cardiac arrest in each children. Quantitative levels of cardiac troponin I and creatine kinase-myocardial band (CPK-MB) was measured and recorded before and 6 and 12 hours after the surgery.

There was no significant difference between the two markers of troponin I and CPK-MB in both groups (P > 0.050). There was no difference regarding the duration of cardiopulmonary bypass (P = 0.120) and cardiac rhythm return time (P = 0.200) after removal of aortic clamp in both groups. The time of aortic clamp was significantly shorter in Del Nido group (P = 0.009).

Due to the lack of statistically significant difference in quantitative levels of troponin I and CPK-MB between the two groups, it seems that efficiency of both solutions are similar.