Very rarely do we hear from anyone within NHS Direct Wales about any issues to do with health, so that really is a bit of a guide as to how much awareness there is.
They ended up producing a flexible catheter tube that goes a bit of the way up the nostrils, then a guide wire is inserted into the targeted sinus. (In live patients this is done via an endoscope and fluoroscope.) A balloon catheter is advanced over the guide wire and positioned against the blocked ostium.
