نتایج جستجو برای: forced expiratory volume in one second
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Background and purpose: Pulmonary problem is one of the non-cardiac causes of exertional chest pain in children. The aim of this study was to evaluate and compare pulmonary function in children with exertional chest pain during rest. Materials and methods: This descriptive analytical cross sectional study was conducted in 200 children aged 10-15 years old in Arak, Iran 2018. The case group (...
Abbreviations: chronic obstructive pulmonary disease, COPD; forced expiratory volume in 1 second, FEV1; patient reported outcomes, PROs; St. George’s Respiratory Questionaire, SGRQ; transition dyspnea index, TDI Citation: Donohue JF. Editorial: Forced expiratory volume in 1 second and patient-reported outcomes: closer than you think. Chronic Obstr Pulm Dis (Miami). 2016; 3(2):512-514. doi: http...
The effects of an upper respiratory infection on some commonly measured spirometric indices have been determined in this study. The forcod vital capacity, forced expiratory volume in one second, forced expiratory flow in the middle half of the vital capacity and the peak expiratory flow were significantly lower during the infection. This stresses the need in cross sectional and longitudinal pul...
OBJECTIVES The purpose of this study was to quantify the time-varying changes in pulmonary function with exposure to prolonged sitting. METHODS Twenty-one healthy volunteers were recruited. The pulmonary function of all participants was measured three times in order to assess changes over time; pulmonary function was measured before sitting, after participants had been seated for 1 hour, and ...
The objective of this study was to develop new spirometric reference equations for the Korean population using the raw data of the fourth Korea National Health and Nutrition Examination Survey (KNHANES IV, 2007-2009). A total of 4,753 healthy lifelong nonsmokers without respiratory diseases and symptoms were selected as the reference population. Spirometric reference equations were derived thro...
BACKGROUND Genome-wide association studies have identified numerous genetic regions that influence cross-sectional lung function. Longitudinal decline in lung function also includes a heritable component but the genetic determinants have yet to be defined. OBJECTIVES We aimed to determine whether regions associated with cross-sectional lung function were also associated with longitudinal decl...
Air purifiers are marketed to asthmatics and others to improve breathing. However, some air purifiers emit harmful ozone—a key component of smog. This study examines the hypothesis that ozone-generating air purifiers and other household devices that generate ozone may have a negative effect on pulmonary function. According to a recent study by the California Air Resources Board, 10% of Californ...
In the European Community Respiratory Health Study (ECRHS), airway responsiveness to methacholine was determined using the Mefar dosimeter protocol. Elsewhere, the 2-min tidal breathing method has become the preferred standardized method. The relationship between measurements of responsiveness by these two methods is not well established. This study measured airway responsiveness to methacholin...
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