 Retrograde cardioplegia cannula was attempted to be placed, but could not be fitted into the coronary sinus safely, therefore, it was banded and oversewn with 5-0 Prolene. 
Retrograde cardioplegia cannula was attempted to be placed , but could not be fitted into the coronary sinus safely , therefore , it was banded and oversewn with 5 - 0 Prolene .