نتایج جستجو برای: fvc
تعداد نتایج: 4963 فیلتر نتایج به سال:
D uring the past 50 yrs, the forced expiratory manoeuvre has formed the basis for the most extensively used lung function test. Although ''spirometry'' means measurement of breath and, therefore, should include all kinds of measurements related to breathing, it is now almost a convention that spirometry is synonymous with measurements involving a forced vital capacity (FVC). In his historical n...
زمینه و هدف: فعالیت ورزشی حاد ممکن است به عنوان یک عامل فیزیولوژیک استرسزا، منجر به پاسخ دستگاه ایمنی و در نتیجه افزایش معنیدار سطوح شاخصهای التهابی شود. هدف از این مطالعه مقایسه تأثیر یک جلسه فعالیت حاد هوازی همراه با مصرف مکمل ویتامین C بر عمکلرد ریوی ورزشکاران مبتلا به برونکواسپاسم ناشی از ورزش بود. روش تحقیق: در این مطالعه نیمه تجربی، 31 ورزشکار با تعیین حداکثر اکسیژن مصرفی بالای 45 میل...
Associations among dust exposure, smoking habits, and demographic factors and longitudinal changes of lung function were assessed among male steel workers. Cohort descriptive data analysis was conducted in 541 steel workers who had performed spirometry at least twice between 1982 and 1991 (mean follow-up, 6.1 years). The annual change (slope) in FVC, FEV1, FEV1/FVC%, and in body weight was dete...
INTRODUCTION AND OBJECTIVE The growing population of the elderly, as well as the occurrence of coexisting diseases and polypharmacy, is the reason why diseases of patients aged $65 years belong to the major issues of the contemporary medicine. Among the most frequent diseases of the elderly, there are respiratory system diseases. They are difficult to diagnose because of the patient group speci...
BACKGROUND Idiopathic pulmonary fibrosis (IPF) is a rare and serious disease characterized by progressive lung-function loss. Limited evidence has been published on the impact of lung-function loss on subsequent patient outcomes. This study examined change in forced vital capacity (FVC) across IPF patients in the 6 months after diagnosis and its association with clinical and healthcare resource...
We analyzed the FEV 1 /FEV 6 and FEV 1 /FVC results of 502 consecutive patients in the spirometric diagnosis of airway obstruction. We also examined the agreement between FEV 6 and FVC in the spirometric diagnosis of restriction. Technically acceptable test results were obtained from 337 subjects (67%). The sensitivity of FEV 1 /FEV 6 for diagnosing airway obstruction as defined by FEV 1 / FVC ...
OBJECTIVE To evaluate the use of the forced expiratory volume in one second/forced expiratory volume in six seconds (FEV1/FEV6) ratio as an alternative to the FEV1/forced vital capacity (FVC) ratio in the detection of mild airway obstruction. METHODS Reference equations for the Brazilian population in 2006 were used in order to determine the lower limits of normality for the FEV1/FEV6 and FEV...
STUDY OBJECTIVES To determine which respiratory function tests best predicted diaphragmatic strength in patients with amyotrophic lateral sclerosis. PATIENTS AND METHODS Patients referred for pulmonary evaluation were included (n = 25) if they underwent measurement of transdiaphragmatic pressure (Pdi) and one or more of the following on the same day: upright FVC, supine FVC, upright FEV(1), s...
OBJECTIVE We assessed associations between physical activity and lung function, and its decline, in the prospective population-based European Community Respiratory Health Survey cohort. METHODS FEV1 and FVC were measured in 3912 participants at 27-57 years and 39-67 years (mean time between examinations=11.1 years). Physical activity frequency and duration were assessed using questionnaires a...
The American Thoracic Society (ATS) and European Respiratory Society (ERS) recommend that spirometry prediction equations be derived from samples of similar race/ethnicity. Malagasy prediction equations do not exist. The objectives of this study were to establish prediction equations for healthy Malagasy adults, and then compare Malagasy measurements with published prediction equations. We enro...
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