نتایج جستجو برای: airway space
تعداد نتایج: 577365 فیلتر نتایج به سال:
x Chapter 1: Introduction 1 1.1 Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Chapter 2: MRI Background 6 2.1 MRI Physics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.1.1 Basic Pulse Sequences . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.1.1.1 Excitation . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.1.1.2 Readou...
Objective: Asthma is an airway complex disease defined by reversible airway narrowing and obstruction, chronic airway inflammation, airway hyperresponsiveness, and tissue remodeling. The purpose of this study was to determine the effect of Brassica napus L. (B. napus) on airway pathologic changes in a rat model of asthma. Materials and Methods: Twenty-four rats were divided into 4 groups: contr...
Introduction: Adenoid hypertrophy is associated with high morbidity rate in children. Although surgical treatment is indicated in severe cases, but there are evidences that some medical interventions are effective in improvement. This study was conducted to evaluate the effectiveness of corticosteroid nasal spray on reduction of airway obstruction due to adenoid hypertrophy. Methods: In a clini...
BACKGROUND Deep neck infections are important otolaryngologic emergencies due to serious complications and the risk of airway compromise, which can lead to mortality. Although the most common causes among pediatric patients are tonsillitis and pharyngeal infections, odontogenic infections are an important cause in adults. CASE REPORT We present three patients with multiple deep neck space abs...
Airway management for patients with craniofacial disorders poses many challenges. The anaesthesiologist must be familiar with the normal bony and soft-tissue anatomy in the airway and how anatomy is altered by various congenital disorders. Specific areas to assess include the oral cavity, anterior mandibular space, maxilla, temporomandibular joint and vertebral column. Congenital conditions tha...
Introduction Oxygen therapy is generally provided via nasal cannula, non-rebreathing masks and masks with reservoir bags. These devices have various limitations. Despite showing clear benefits in certain conditions, non-invasive positive pressure ventilation (NIPPV) limits mobilization, restricts communication and oral nutrition and is poorly tolerated by some patients due to discomfort. High-f...
BACKGROUND Homogeneous ventilation is important for prevention of ventilator-induced lung injury. Electrical impedance tomography (EIT) has been used to identify optimal PEEP by detection of homogenous ventilation in non-dependent and dependent lung regions. We aimed to compare the ability of volumetric capnography and EIT in detecting homogenous ventilation between these lung regions. METHOD...
Objective Determine if anatomic dimensions of airway structures are associated with airway obstruction in obstructive sleep apnea (OSA) patients. Methods Twenty-eight subjects with (n = 14) and without (n = 14) OSA as determined by clinical symptoms and sleep studies; volunteer sample. Skeletal and soft tissue dimensions were measured from radiocephalometry and magnetic resonance imaging. The...
A prototype high-frequency ultrasonic nebulizer, coupled with a nebu lization chamber, has been designed specifically to overcome the problem of inefficient and unpredictable radioaerosol delivery. The objective was to reduce mean particle size, increase aerosol concentration, and minimize dead space. Thirty-nine patients were studied, including 15 patients in sig nificant respiratory distress....
Cricothyroid onabotulinum toxin A injection to avert tracheostomy in bilateral vocal fold paralysis.
IMPORTANCE More than half of children with bilateral vocal fold paralysis require a tracheostomy for airway management. We report an innovative, minimally invasive approach consisting of onabotulinum toxin A injection into the cricothyroid muscles. OBSERVATIONS Onabotulinum toxin A was injected under direct vision into the cricothyroid muscles of 6 pediatric patients with bilateral abductor v...
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