نتایج جستجو برای: acoustic rhinometry
تعداد نتایج: 85938 فیلتر نتایج به سال:
Objective: Aim of the study is to evaluate subjective outcomes and objective postoperatively investigate correlations between these measurements. Material Methods: This prospective before after surgical was conducted with patients admitted symptomatic nasal septum deviation (NSD) who underwent Cottle’s septoplasty. Morphometric diameters cavity were measured using a multi-detector computed tomo...
INTRODUCTION Upper airway measurement can be important for the diagnosis of breathing disorders. Acoustic reflection (AR) is an accepted tool for studying the airway. Our objective was to investigate the differences between cone-beam computed tomography (CBCT) and AR in calculating airway volumes and areas. METHODS Subjects with prescribed CBCT images as part of their records were also asked ...
Acoustic rhinometry could numerically describe upper airway condition of air draft by drawing a graph plotting the distance from the nostril vs. the crosssectional area. Some decreases on the graph correspond to the typical anatomic structures of human nasal cavity. The 3-dimensional, computing fluid dynamic model of the same person was developed based on computed tomography scans. The veracity...
The ragweed- and histamine-induced decreases in nasal patency in cohorts of ragweed-sensitized and nonsensitized dogs were assessed. The volume of nasal airways (V(NA)) was assessed by acoustic rhinometry and resistance to airflow (R(NA)) by anterior rhinomanometry. Histamine delivered to the nasal passages of five dogs caused a rapid and prolonged increase in R(NA) (0.75 +/- 0.26 to 3.56 +/- 0...
Adequate perception of nasal airflow (i.e., nasal patency) is an important consideration for patients with nasal sinus diseases. The perception of a lack of nasal patency becomes the primary symptom that drives these patients to seek medical treatment. However, clinical assessment of nasal patency remains a challenge because we lack objective measurements that correlate well with what patients ...
The planning of experimental studies for evaluation of nasal airflow is particularly challenging given the difficulty in obtaining objective measurements in vivo. Although standard rhinomanometry and acoustic rhinometry are the most widely used diagnostic tools for evaluation of nasal airflow, they provide only a global measurement of nasal dynamics, without temporal or spatial details. Further...
UNLABELLED The area above the nasal cavity plays a role in respiratory physiology. AIM To analyze, during a period of growth, a possible change in the minimum cross sectional area (MCA) and nasal volume of the anterior nasal cavity. MATERIALS AND METHODS We evaluated 29 children (14 boys and 15 girls) with a mean age of 7.81 years at first examination (M1) and 11.27 years in the second exam...
OBJECTIVES We evaluated the effect of external nasal dilator strips and local decongestants used either alone or in combination on the nasal airway. SUBJECTS AND METHODS The study included 23 volunteer males (mean age 24.3 years; range 21 to 36 years) with no complaints of nasal obstruction. Nasal airway dimensions were measured by acoustic rhinometry after the following applications: (i) no ...
Methods In this controlled multicentre phase IV study, HDM adult allergic patients were randomized to receive subcutaneous immunotherapy with a 10 IR/ml depot extract plus symptomatic treatment (group A) or only symptomatic treatment (group B) (2:1). Acoustic rhinometry after nasal provocation test (NPT) was selected to objectively assess the efficacy of this treatment by measuring the nasal vo...
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