Variability of relaxed expiratory volume and forced inspiratory volume
نویسندگان
چکیده
منابع مشابه
Variability of relaxed expiratory volume and forced inspiratory volume.
Measurements of relaxed expiratory volume in one second (REV1.0) and forced inspiratory volume in one second (FIV1.0) were made on 50 subjects on two occasions to know the variability of these procedures in the individual subject. The mean coefficients of variation for REV1.0 and FIV1.0 were 6740' and 892%, respectively. The 95% confidence limit of difference between highest readings obtained o...
متن کاملForced expiratory volume before and after isoprenaline.
Improvement in the results of tests of ventilatory function in response to a bronchodilator drug, given by inhalation or by injection, is now widely used to indicate the presence of reversible " bronchospasm" (Rossier, 1949; Gilson and Hugh-Jones, 1955; Kennedy and Thursby-Pelham, 1956). Frequent repetition of some of these tests in a small series of patients has revealed an interesting relatio...
متن کاملPrecipitous fall of the forced expiratory volume.
Patients attending hospital on account of chronic airways obstruction usually present with breathlessness. Most, at this stage, are found to have a severe reduction of the forced expiratory volume (F.E.V.), but little is known about the nature of the deterioration in ventilatory function in earlier phases of the illness. Two patients are described to show how precipitous this deterioration may ...
متن کاملSpirometry versus flow volume inspiratory and expiratory loop.
P SPIROMETRY VERSUS FLOW VOLUME INSPIRATORY AND EXPIRATORY LOOP To the Editor: I would like to comment on the excellent CME article, “Vocal Cord Dysfunction: An Update” by Leslie M. Gimenez, MD, and Heidi Zafra, MD (Ann Allergy Asthma Immunol. 2011;106:267–275). I compliment the authors on the very thorough review and analysis of the literature. I am concerned by the nomenclature they used in d...
متن کاملEffort and the forced expiratory volume in one second (FEV).
1. The relationship between volumes expired and the maximum intrathoracic pressures developed within the first second of expiration was examined in a group of healthy subjects and patients with airways obstruction who exhaled with varying degrees of effort. 2. The body plethysmographic method was used to ensure that expirations started from total lung capacity. 3. Three different types of volum...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Thorax
سال: 1970
ISSN: 0040-6376
DOI: 10.1136/thx.25.2.178