5. The balloon is slowly inflated up to the desired rise:
1 mL = 11 mm of rise
1,5 mL = 13 mm of rise
2,0 mL = 16 mm of rise
The balloon must remain expanded for 3-5 minutes so that to give the time to the elastic component of the membrane to settle in.
In this phase it will be possible to make a rx , thanks to theradio-opaque balloon, which will show the success of the procedure.