 Both U-shaped scalp incisions were opened exposing both the left and the right ventricular catheters as well as the old low pressure reservoir, which might have been leading to the coaptation of the ventricles. 
Both U - shaped scalp incisions were opened exposing both the left and the right ventricular catheters as well as the old low pressure reservoir , which might have been leading to the coaptation of the ventricles .