Aim

To assess the hemodilution during mitral valve surgery performed using St Thomas cardioplegia versus Del Nido cardioplegia. We also compared the volume of cardioplegia required, cross clamp time and cardiopulmonary bypass (CPB) time in each group.

Methods and Materials

Patients admitted between the period of January 2015 to June 2018 for mitral valve disease were included in this retrospective study. Patients were divided into two groups each comprising of 50 patients according to type of cardioplegia received during surgery.

Results

The hemodilution was much lesser in the patients who underwent mitral valve surgery using St Thomas cardioplegia (Haematocrit 26.3 ± 2.5%) as compared to those patients underwent the same surgery using del Nido Cardioplegia (Haematocrit 24.8 ± 2.2%). The volume of cardioplegia, cross clamp time and cardiopulmonary bypass time was less with del Nido cardioplegia as compared to St. Thomas cardioplegia (922.6 ± 95.4 vs 1854 ± 228.1 ml; 65.5 ± 8.2 vs 71.52 ± 8.8 minutes and 99.3 ± 13.1 vs 110.6 ± 14.6 minutes respectively).

Conclusion

The use of St Thomas Cardioplegia in patients during mitral valve replacement surgery has less hemodilution on CPB as compared to del Nido cardioplegia. But the patients who received del Nido cardioplegia has less requirement of number and volume of cardioplegia required during surgery with shorter cross clamp and CPB time.