[Endonasal microsurgery by Heermann++. Part II].

Endonasal sinus surgery in the case of inflammatory disease is of increasing importance. The maxillary, ethmoid, sphenoid and frontal sinus operations as well as the septumplasty are performed microsurgically. There are only few indications, when the intranasal procedure cannot be applied. We prefer all intranasal operations with the patient placed in semi-Fowler's position with hypotensive anaesthesia. Out of a total of 310 cases in which endonasal microsurgery was performed, 251 were submitted to a retrospective study 12-36 months after the operation. In our study there was an operative success rate of 92.8%. No complications such as: CSF leakage, persisting postoperative visual or ocular disturbance or vascular complications were observed. Compared with transfacial or external sinus surgery, the advantage of the transantral microsurgical technique are better functional results, fewer complications an a reduced duration of hospitalization.