Skip to main content
. 2012 Nov 8;270(3):1157–1160. doi: 10.1007/s00405-012-2243-9

Fig. 1.

Fig. 1

The balloon catheter was pushed 2 cm into the ET. After the balloon had been positioned correctly, the dilation was applied to a pressure of 10 bars for 2 min (using saline solution)