[Surgical options for treatment of snoring and sleep apnea]. / Chirurgische Behandlungsmöglichkeiten des Schnarchens und der Schlafapnoe.

Simple snoring and obstructive sleep apnea are part of a complex disease process with a high prevalence. Surgical treatment options have been developed by otolaryngologists over the last decades. Knowledge of different surgical procedures is required to address the various findings during preoperative assessment. Patients with nasal airway blockage due to septal deviation, large turbinates or polyps may benefit from endonasal surgery. Obstructive tonsils, palatal webbing, and an enlarged uvula require surgical approaches including the soft palate and tonsils. The controversy on indications and contraindications for the standard uvulopalatopharyngoplasty, laser-assisted uvulopalatoplasty and the use of radiofrequency is still ongoing. Dysgnathia may require maxillofacial surgery and macroglossia may be treated with reductive surgery of the tongue. Narrowing of the posterior airway space at the level of the tongue base may be addressed by advancement of the bony insertion of the genioglossus muscle and suspension of the hyoid. A new procedure is the suspension of the tongue with a non-resorbable suture fixed to a mandible anchored screw. Our first promising results need to be re-evaluated over time.

Contrast-enhanced MR of the facial nerve in patients with posttraumatic peripheral facial nerve palsy.

PURPOSE: To estimate the value of noncontrast and contrast-enhanced T1-weighted MR imaging in detecting the underlying mechanisms of injury and regeneration in immediate- or delayed-onset posttraumatic peripheral facial nerve palsy. METHODS: Twenty-four patients with posttraumatic peripheral facial nerve palsy were examined on a 1.5-T MR imaging unit with precontrast and postcontrast T1-weighted spin-echo and gradient-echo sequences. RESULTS: Abnormal enhancement of the distal intrameatal nerve segment was visible in 92% of the patients up to 2 years after their initial trauma. A hematoma within the geniculate ganglion was seen in 33% of the patients with a longitudinal fracture. The greater superficial petrosal nerve (in 32% of patients) and the geniculate ganglion (in 48% of patients) were thick and intensely enhancing. Hematoma within the cochlea/vestibule or enhancement of the cochlea/vestibule and the vestibulocochlear (eighth) nerve was observed in transverse fractures. CONCLUSION: MR images can show long-lasting abnormal nerve enhancement, especially in the distal intrameatal nerve segment, related to the long-lasting breakdown of the blood/peripheral nerve barrier associated with nerve degeneration and regeneration after traumatic stretching of the greater superficial petrosal nerve. Additionally, intraoperatively observed perineural and intraneural scar formation leads to thickening and intense enhancement of the affected nerve segments on MR images. A hematoma in the region of the geniculate ganglion can be seen in some but not all patients. Associated damage of the inner ear structures in patients with transverse fractures is also visible on MR images.

[The value of clinical examination methods in diagnosis of acoustic neuroma]. / Die Wertigkeit klinischer Untersuchungsmethoden in der Akustikusneurinomdiagnostik.

The diagnostic value of routine clinical tests for predicting the presence of an acoustic neuroma (AN) was assessed retrospectively in a group of 391 patients having magnetic resonance imaging (MRI) scans because of a suspected retrolabyrinthine lesion. An AN was found by MRI only in 9% of these patients. The positive predictive value of unilateral sensorineural hearing loss in a pure-tone audiogram (PTA) and unilaterally impaired caloric response was 9% and 12%, respectively. In contrast, AN was found in 36% of patients with pathological brainstem evoked response audiometry (BE-RA). A normal PTA or normal caloric response did not exclude the presence of AN (specificity 90% and 71%, respectively). A normal BERA was found in less than 5% of the patients with AN. According to these results, the following guidelines should be followed for the diagnosis of AN: (1) patients with a high suspicion for AN from history, PTA and caloric responses should be sent directly for MRI; (2) patients with low suspicion for AN from screening tests should have BERA performed to exclude a retrolabyrinthine lesion.