 The balloon was pulled more proximally and then inflated again at 6 atmospheres for approximately 20 seconds, with the proximal end of the balloon positioned distal to the origin of the third diagonal so as to not compromise the ostium. 
The balloon was pulled more proximally and then inflated again at 6 atmospheres for approximately 20 seconds , with the proximal end of the balloon positioned distal to the origin of the third diagonal so as to not compromise the ostium .