Inner ear and retrocochlear pathology on magnetic resonance imaging for sudden and progressive asymmetrical sensorineural hearing loss.

Background: In sudden and asymmetrical progressive sensorineural hearing loss (SNHL), magnetic resonance imaging (MRI) is required to evaluate retrocochlear pathology and, with recent advances in MRI techniques, inner ear pathology. Given the limited literature regarding inner ear pathology associated with SNHL, we aimed to assess the incidence of retrocochlear and inner ear pathology, and congenital malformation on MRI in sudden SNHL (SSNHL) and progressive SNHL.

Methods: A total of 987 acoustic neuroma (AN) protocol MRI internal acoustic meatus studies performed at our institution to investigate SNHL between January 2013 and December 2015 inclusive were identified.

Two-dimensional assessment of the nasal valve area cannot predict minimum cross-sectional area or airflow resistance.

Background: Clinicians who manage nasal obstruction often comment on the shape and size of the nasal valve (NV) area. However, correlation of the symptoms of obstruction, nasal airflow dynamics, and the endoscopic appearance of the anatomic cross-sectional area of the NV is poorly understood. Endoscopic imaging and calculation of the NV area is investigated as a tool for either clinical or research use.

Topical concentrated epinephrine (1:1000) does not cause acute cardiovascular changes during endoscopic sinus surgery.

Background: Topical epinephrine is used in endoscopic sinonasal surgery for local vasoconstriction. Potential for cardiovascular complications remains a concern for some due to the possibility of systemic absorption. Topical vs injected epinephrine was examined in a prospective analysis of perioperative cardiovascular effects, and in an audit of cardiovascular complications during endoscopic sinonasal surgery.