Results 21 to 30 of about 96,005 (269)

Estimation of airway obstruction using oximeter plethysmograph waveform data

Respiratory Research, 2005
Background Validated measures to assess the severity of airway obstruction in patients with obstructive airway disease are limited. Changes in the pulse oximeter plethysmograph waveform represent fluctuations in arterial flow.
Desmond Renee' A, Spiro David M, Arnold Donald H, Hagood James S   +3 more
doaj   +1 more source

Fractional exhaled nitric oxide could identify early spirometry change in clinically suspected asthma patients without airway obstruction

European Journal of Inflammation, 2021
Fractional exhaled nitric oxide (FeNO) has been proposed as a non-invasive biomarker for allergic inflammation seen in asthma. The aim of this study was to assess the ability of FeNO to discriminate spirometry and lung volume measurements between those ...
Qingbo Gao, Qiaozhen Wu, Fei Li, Cheng Chen   +3 more
doaj   +1 more source

Airway obstruction time and outcomes in patients with foreign body airway obstruction: multicenter observational choking investigation

Acute Medicine & Surgery, 2022
Aim Foreign body airway obstruction (FBAO) is a major public health concern worldwide for infants and older adults. This study determines the association between airway obstruction time and neurological outcomes to plan an effective response for patients
Yutaka Igarashi, Tatsuya Norii, Kim Sung‐Ho, Shimpei Nagata, Yudai Yoshino, Takuro Hamaguchi, Riko Nagaosa, Shunichiro Nakao, Takashi Tagami, Shoji Yokobori   +9 more
doaj   +1 more source

Surface-tension-driven evolution of a viscoplastic liquid coating the interior of a cylindrical tube [PDF]

J. Fluid Mech. 944 (2022) A22, 2022
One mechanism for airway closure in the lung is the surface-tension-driven instability of the mucus layer which lines the airway wall. We study the instability of an axisymmetric layer of viscoplastic Bingham liquid coating the interior of a rigid tube, which is a simple model for an airway that takes into account the yield stress of mucus.
arxiv   +1 more source

Transmission factors and exposure to infections at work and invasive pneumococcal disease

American Journal of Industrial Medicine, Volume 66, Issue 1, Page 65-74, January 2023., 2023
Abstract Background Working in close contacts with coworkers or the general public may be associated with transmission of invasive pneumococcal disease (IPD). We investigated whether crowded workplaces, sharing surfaces, and exposure to infections were factors associated with IPD.
Kjell Torén, Maria Albin, Magnus Alderling, Linus Schiöler, Maria Åberg   +4 more
wiley   +1 more source

Efficacy of the exhalation delivery system with fluticasone in patients with chronic rhinosinusitis with nasal polyps whose symptoms recur after sinus surgery

International Forum of Allergy &Rhinology, Volume 13, Issue 1, Page 31-41, January 2023., 2023
Abstract Background Sinus surgery removes inflamed tissue, restores airflow, and improves delivery of medication into surgically opened spaces. The exhalation delivery system with fluticasone (EDS‐FLU; XHANCE®) uses a novel delivery system to create closed‐palate, positive‐pressure, bidirectional mechanics that significantly alter the deposition of the
Randall A. Ow, Zachary M. Soler, Raj Sindwani, Donald A. Leopold, Jivianne T. Lee, Ramy A. Mahmoud, Joseph K. Han   +6 more
wiley   +1 more source

Smoking Status Modifies the Relationship between Th2 Biomarkers and Small Airway Obstruction in Asthma

Canadian Respiratory Journal, 2021
Background. Cigarette smoking and Th2-inflammation are both crucial in the pathogenesis of asthma. However, it is unknown whether smoking can affect the association between Th2-inflammation and small airway obstruction in adults with asthma.
Shuyuan Chu, Libing Ma, Jianghong Wei, Jiying Wang, Qing Xu, Meixi Chen, Ming Jiang, Miao Luo, Jingjie Wu, Lin Mai, Guofang Tang, Biwen Mo   +11 more
doaj   +1 more source

Two-stage Contextual Transformer-based Convolutional Neural Network for Airway Extraction from CT Images [PDF]

arXiv, 2022
Accurate airway extraction from computed tomography (CT) images is a critical step for planning navigation bronchoscopy and quantitative assessment of airway-related chronic obstructive pulmonary disease (COPD). The existing methods are challenging to sufficiently segment the airway, especially the high-generation airway, with the constraint of the ...
arxiv  

Ultrasonographic Detection of Airway Obstruction in a Model of Obstructive Sleep Apnea

Ultrasound International Open, 2017
Purpose Obstructive sleep apnea (OSA) is a common clinical disorder characterized by repetitive airway obstruction during sleep. The gold standard for diagnosis of OSA, polysomnogram (PSG), cannot anatomically localize obstruction. Precise identification
Amal Isaiah, Reuben Mezrich, Jeffrey Wolf   +2 more
doaj   +1 more source

Negative pressure pulmonary edema: a case report

BMC Anesthesiology, 2019
Background The negative pressure pulmonary edema is rare clinical situation which caused mainly by upper airway obstruction. However except upper airway obstruction, there may be other pathophysiological disorders making patients more vulnerable to ...
Jun Xiong, Yongxing Sun
doaj   +1 more source