Tevfik Metin Önerci

OBJECTIVE: To investigate body fat composition, measured by bioelectrical impedance assay (BIA), for predicting the presence and severity of obstructive sleep apnea-hypopnea syndrome (OSAHS). Body fat composition was also compared with other well-known OSAHS predictors such as body mass index (BMI), neck circumference, and abdominal visceral fat.

STUDY DESIGN: A prospective study was designed. Fifty-one patients (41 male, 10 female), who were referred to Hacettepe University Faculty of ...

OBJECTIVES: Juvenile nasopharyngeal angiofibroma (JNA) is a highly vascular and locally invasive tumor with a high incidence of persistence and recurrence. The classical treatment of this tumor is surgery and/or radiotherapy. Use of endoscopic techniques seems to be on the rise in treatment of these lesions. We tried to explore the roles and limits of endoscopic surgery alone or with classical surgical techniques in treatment of these tumors.

METHODS: Retrospective case review was ...

Our aim in this work is to define the importance of anatomical knowledge in septoplasty operation and to prevent complications. Septoplasty is one of the most common operations in otorhinolaryngology to treat the nasal obstruction caused by septal deviation. During and after septoplasty, there are some recorded complications, such as hemorrhage, hematoma, septal abscess, septal perforation, saddle nose, infection, anosmia, visual disturbances, cavernous sinus thrombosis, meningitis, ...

Acute invasive fungal rhinosinusitis (AIFR) is a potentially fatal infection that affects immunocompromised patients. Early diagnosis and treatment, including aggressive surgical debridement, antifungal medication, and correction of underlying predisposing factors are essential for recovery. The aim of this study was to review our experience with AIFR. The records of 19 patients histopathologically diagnosed with invasive fungal rhinosinusitis were retrospectively reviewed. Demographic ...

PURPOSE: Heart rate variability (HRV) is a noninvasive and sensitive method used to evaluate autonomic function of the heart based on specific polysomnographic parameters. This study aimed to determine the effect of expansion sphincter pharyngoplasty (ESP) on HRV and the apnea-hypopnea index (AHI) in patients with obstructive sleep apnea (OSA).

MATERIALS AND METHODS: This retrospective cohort study included patients who presented to the Department of Otorhinolaryngology, Hacettepe ...

OBJECTIVE: To investigate the association of high septal deviation with the olfactory fossa depth and Gera angle.

METHODS: Fifty-four computed tomography scans of patients with high septal deviation were evaluated. The olfactory fossa depth and Gera angle were measured. The values of the deviated and nondeviated sides were compared.

RESULTS: No association between high septal deviation and the olfactory fossa depth and Gera angle was found.

CONCLUSION: High septal deviation does not ...

Congenital choanal atresia is an uncommon disease occurring in approximately 1 in 7,000-8,000 births. It can present as an emergency during the neonatal period in bilateral cases. Classical surgical methods of treatment of this entity are widely replaced by endoscopic techniques.

Sneeze is a coordinated protective respiratory reflex which arises due to stimulation of the upper respiratory tract, particularly the nasal cavity. Actually, activation of the central and peripheral nervous system plays a major role in the pathophysiology of this process. In fact, little is known about the sneeze reflex action, which sometimes becomes a sign associated to a series of different medical conditions. In this chapter, we aimed to review the physiology, pathophysiology, ...

There are many factors contributing to lacrimal elimination, but the most important mechanism is canalicular and sac pump mechanism. Canalicular pump is probably more important than the sac pump because following DCR, tears are still drained through the canaliculi to the nose. The pressure gradient between the canaliculi and the sac cannot be produced if the canaliculus is slit open. Therefore, the lacrimal canaliculi should be preserved and should not be damaged. Tear elimination is ...