The Effect of Premedication with Metoprolol on the Surgical Field during Endoscopic Stapedectomy.

Background: Otosclerosis is one of the most frequent causes of conductive hearing loss in adults. Surgical treatment is considered to be the gold standard for this disease. Endoscopic stapedectomy is a new approach for the treatment of otosclerosis that requires a bloodless field.

The effect of bony cochlear nerve canal (BCNC) diameter on the degree of sensorineural hearing loss.

Purpose: This study investigated the correlation between the diameter of the bony cochlear nerve canal (BCNC), as determined by Temporal bone CT, and MRI findings of cochlear nerves (CN) in children with sensorineural hearing loss (SNHL).

Materials And Methods: A prospective study design was followed. Radiological data (Temporal bone CT and MRI) of fifty children with sensorineural hearing loss (age <18 y) were included in the study.

Overexpression of Inducible Nitric Oxide Synthase in Allergic and Nonallergic Nasal Polyp.

Sinonasal polyps are very common benign lesions of the nasal mucosa. Most of nasal polyps (NP) are idiopathic, and the pathophysiology of this disease is still incompletely understood. Nitric oxide (NO) is a reactive molecule generated by nitric oxide synthase (NOS).

Differential Diagnosis of Post Auricular Swelling with Mastoid Bone Involvement.

Post auricular swelling with mastoid bone involvement most commonly occurs as a cranial complication of chronic or acute suppurative otitis media. Aim of this study, to detect etiology of postauricular swelling with mastoid bone involvement. This is a retrospective study which was done on all patients whom underwent mastoidectomy for post auricular swelling with mastoid bone involved in El Minia University Hospital from January 2014 to June 2017.