Reflexes originated from the supralaryngeal airways, larynx and lungs can affect upper airway calibre r 11. Specific receptors at the lnryngeal level have been thought to be involved 12J. N~tsal obstruction in normal men m<\y cause apnoeas allll in addition. more arousals and full awakenings from sleep [3]. The underlying mechanism remains unclear. It was demonstrated that nasal occlusion incre...

Introduction: Evidence for factors determining paediatric tracheostomy decannulation vary extensively; therefore, this prospective observational study aimed to investigate these factors.   Materials and Methods: In total, 67 consecutive paediatric patients (<12 years old) who referred to the Department of Otolaryngology, (Postgraduate Institute Medical Education and Research),(Chandigarh), ...

Rationale: Continuous positive airway pressure (CPAP) is the treatment of choice in patients with Symptomatic Obstructive Sleep Apnea Syndrome (OSAS). Recently, Mandibular Advancement Devices (MAD) are used in the treatment of OSAS. Objective: Investigate the efficacy of the Orthoapnea MAD in patients with mild or moderate OSAS in adults. Methods: This is a prospective study. Patients diagnosed...

OBJECTIVES/HYPOTHESIS The ideal animal experimental tracheostomy technique is one that is 1) safe and easy to perform, 2) requires no tracheostomy tube, and 3) requires minimal cleaning or suctioning to maintain patency. The leporine model for airway injury has been well established and offers an inexpensive and practical animal model for experimental evaluation. However, previous research has ...

This prospective, cohort study evaluated the role of sleep nasendoscopy (SNE) with simultaneous mandibular protrusion in predicting successful mandibular advancement splint (MAS) therapy in subjects with obstructive sleep apnoea (OSA). Nineteen OSA subjects diagnosed by overnight polysomnography were referred for MAS therapy, following SNE investigation. A Herbst MAS was fabricated for each sub...

Both mandibular advancement (MA) and stimulation of the genioglossus (GG) have been shown to improve upper airway patency, but neither one achieves the effect of continuous positive airway pressure (CPAP) treatment. In the present study we assessed the combined effect of MA and GG stimulation on the relaxed pharynx in patients with obstructive sleep apnea (OSA). We evaluated responses of upper ...

In snorers, the physiologic decrease of postural muscle tone during sleep results in increased collapsibility of the upper airway. Measurement of nasal pressure changes with prongs is increasingly used to monitor flow kinetics through a collapsing upper airway. This report presents a mathematical model to predict nasal flow profile from three critical components that control upper airway patenc...

INTRODUCTION Induction of general anesthesia in patients with superior vena cava (SVC) syndrome may cause airway obstruction and cardiovascular collapse. CASE PRESENTATION Herein, we introduced a patient with the diagnosis of dissecting aneurysm of the ascending aorta who was candidate for emergency surgery. He also had symptoms of SVC syndrome. To maintain airway patency during anesthetic ma...

There are many strategies available to treat palliation of airway obstruction due to benign or malignant conditions. The initial choice depends on the urgency of the situation, the extent of the disease process as assessed bronchoscopically, as well as the individual experience and preference of the physician. We present a rare case of complete tracheal transection following a traffic accident....

OBJECTIVES To assess whether an initial treatment with nasal continuous positive airway pressure (NCPAP) therapy, applied for one night, had any effect on airway patency. METHODS In 18 patients with obstructive sleep apnea syndrome (OSAS), we measured the total resistance of the respiratory system (Rrs) and their relevant lung functions before and after polysomnography, with and without NCPAP...