1. Forced exhalations performed from volumes below total lung capacity, so-called partial expiratory flow-volume curves, are suggested to be more sensitive in detecting airways bronchoconstriction than maximal expiratory flow-volume curves begun at total lung capacity. 2. In eight healthy men both maximal and partial expiratory flow-volume curves were measured where breath was held at total lun...

Our objective was to determine if the menstrual cycle affected expiratory resistance developed during progressive incremental exercise in females. Eleven females (age = 19.7 ± 1.1 yr., body mass = 58.9 ± 8.8 Kg, height = 1.65 ± 0.3 m) gave consent to participate in the study. Participants were studied during the follicular (day 7 ± 2 days following onset of menses) and luteal (day 21 ± 2 days f...

OBJECTIVE To examine correlates of peak expiratory flow rate in people with type 1 diabetes and to evaluate the relationship of peak expiratory flow rate to mortality. RESEARCH DESIGN AND METHODS A cohort study that was originally designed to determine the prevalence, incidence, and severity of diabetic retinopathy also provided the opportunity to measure peak expiratory flow rate. This was f...

a randomized, double-blind, crossover trial was designed to compare the acute effects of combivent and salbutamol on spirometric parameters in patients with moderate to severe asthma. nineteen patients with a mean baseline forced expiratory volume in 1 sec. (fev]) less than 65% predicted, were randomized on two separate days to receive two puffs of salbutamol (200 µg) or two puffs of combivent ...

Use of affordable and simple tools for screening chronic obstructive pulmonary disease (COPD) is limited. In recent years, measurement forced expiratory volume in the 6 s (FEV6) has been researched as a substitute to replace vital capacity measurements. This work was performed analyze effectiveness simplified handheld flowmeter device search an optimal cutoff value FEV1/FEV6 detect airflow narr...

introduction adenotonsillar hypertrophy is a common disorder among children which, without proper treatment, may lead to considerable problems. although the consequences of this disorder have been studied in other articles, we decided to evaluate the changes in pulmonary function tests in these children after adenotonsillectomy, and the correlation between clinical and spirometric parameters.  ...

asthma management is a major concern because some asthmatic patients either do not respond or else hardly respond to treatment. therefore in the present study, an attempt has been made to determine the predictors of treatment response in asthmatic patients. thirty six asthmatic adults including 13 male and 23 female were studied dur¬ing a 3 month treatment period. asthma symptom score (ss) and ...

cromolyn sodium, a mast cell stabilizing agent, provides an immediate protective effect against the exercise-induced bronchoconstriction while being used before the exercise. however, cromolyn is ineffective in reversing asthmatic bronchospasm; it is used as a maintenance therapy and has a prophylactic role in chronic asthma.    the purpose of this study was to determine the extent of change in...

Introduction: The forced expiratory flow at 25 and 75% of the pulmonary volume/forced vital capacity ratio (FEF25-75/FVC) as a spirometry parameter has been successful in the early diagnosis of chronic obstructive pulmonary disease (COPD) and the methacholine challenge test for assessing airway responsiveness.To determine the accuracy of FEF25-7...

introduction: renal failure affects the mechanical and the ventilatory function of the lungs. a few studies have evaluated the ventilatory and pulmonary function in dialysis patients. the present study aimed to compare pulmonary function test (pft) results in patients undergoing hemodialysis (hd) and peritoneal dialysis (pd). materials and methods: we conducted a cross-sectional study on 50  pa...