VENTILATORY FUNCTION TESTS. I. VOLUNTARY VENTILATION CAPACITY
نویسندگان
چکیده
منابع مشابه
Reference values for lung function tests. II. Maximal respiratory pressures and voluntary ventilation.
The strength of the respiratory muscles can be evaluated from static measurements (maximal inspiratory and expiratory pressures, MIP and MEP) or inferred from dynamic maneuvers (maximal voluntary ventilation, MVV). Although these data could be suitable for a number of clinical and research applications, no previous studies have provided reference values for such tests using a healthy, randomly ...
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In some forms of cardiac disease an abnormally high ventilatory response to exercise contributes to the production of disability and impairment of exercise tolerance (Campbell, 1934). In this paper we record the results of a standardized exercise test, relating ventilatory response to the work done, in a series of 163 patients with congenital and acquired cardiac disease. The findings are consi...
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The goal of mechanical ventilation is to maintain adequate gas exchange by opening and stabilizing alveolar units with minimal detriment to the pulmonary and circulatory systems. The optimal ventilatory strategy may be difficult to achieve, especially in patients with respiratory failure. Total liquid ventilation is a process whereby a liquid perfluorocarbon (PFC) replaces both the functional r...
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BACKGROUND Nocturnal hypoventilation is associated with chronic ventilatory insufficiency (CVI). Noninvasive mechanical ventilation (NIV) performed overnight relieves symptoms of hypoventilation and improves daytime blood gases in CVI. In order to test whether the efficacy of NIV depends on its being applied during sleep we conducted a prospective case controlled study comparing daytime mechani...
متن کاملNormal standards for single breath tests of ventilatory capacity in children.
Tests of ventilatory capacity based on the recording of a maximum forced expiration after a full inspiration are becoming increasingly widely used. They are quicker to perform and require less cooperation and effort on the part of the subject than the conventional maximum breathing capacity estimation, and the results are more informative because three indices of ventilatory capacity, each of d...
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ژورنال
عنوان ژورنال: Journal of Clinical Investigation
سال: 1950
ISSN: 0021-9738
DOI: 10.1172/jci102304