BACKGROUND A study was carried out to determine whether subjects with respiratory symptoms are more likely to have impaired lung function or increased airway lability, and to quantify these relationships in a population of adults. METHODS Data were collected from 511 participants (aged 20-70 years) from the Dutch part of the European Community Respiratory Health Survey (ECRHS). The symptoms a...

BACKGROUND Currently, functional assessment to monitor therapeutic response in feline lower airway disease (FLAD) has limited application. OBJECTIVES To evaluate if expiratory indices derived from pseudo-tidal breathing flow-volume loop (pTBFVL) representing lower airway obstruction would decrease after clinical improvement and to investigate the correlation between functional phenotype and i...

To better characterize airway hyperresponsiveness reported in cardiac patients questionnaire-recorded symptoms, bronchial responsiveness to methacholine (Mch) and to ultrasonically nebulized distilled water (UNDW), diurnal oscillations of peak expiratory flow (PEF) rate were evaluated in 32 patients with moderate mitral stenosis. Twenty patients were responsive to Mch (defined as provocative do...

In a multicentre parallel group study we studied 176 adult patients (53% men) with severe acute asthma (peak expiratory flow (PEF), 15-50% of predicted values). The effect of two doses of inhaled salbutamol (0.15 mg.kg-1 x 2; 30 min apart) (n = 87) was compared with that of one dose of salbutamol given intravenously (5 micrograms.kg-1) (n = 89). There was a significantly larger increase in peak...

abstract introduction: yoga as an exercise to improve the physical, psychological, social health condition, and promote the feeling of health in healthy people in the medical education community is considered. the aim of this research was to find the effect of 8 weeks yoga training on respiratory function and heart rate of non-athlete females. methods: 30 students of khorasgan azad university w...

The within subject variability of forced vital capacity (FVC), forced expiratory volumes in one second (FEV1) and half a second (FEV0.5), peak expiratory flow (PEF), and flow rates at 25-75%, 75-85%, 25%, 50%, and 75% of expired FVC were assessed among 7 year old children from the general population. Within occasion variability in 232 children was lowest for FVC (coefficient of variation (CV) 5...

Whilst the trials quoted in the Cochrane reviews [5–7] provide various degrees of quality of evidence, the key information that is missing from these studies is an understanding of the physiological principles by which these different techniques work. Physiologically, the techniques need to do the following. 1) Increase absolute peak expiratory flow (PEF) to move secretions towards the orophary...

BACKGROUND Exercise-induced bronchoconstriction (EIB), which describes acute airway narrowing that occurs as a result of exercise, is associated with eosinophilic airway inflammation, bronchial hyperresponsiveness. The forced expiratory volume in one second (FEV1) is the most commonly used spirometric test in the diagnosis of EIB in exercise challenge in asthma. Other parameters such as forced ...

Laboratory animal workers are at risk of developing allergic symptoms, of which asthmatic symptoms are the most severe. The aim was to study the relationship between allergic symptoms due to working with rats and variability and changes in peak expiratory flow (PEF). Several indices were used on the basis of the amplitude of the PEF or the differences in PEF between days with and without exposu...