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August 2021

TIMED VITAL CAPACITY A CORRELATION WITH MAXIMAL BREATHING CAPACITY AND USE AS A CLINICAL TEST OF VENTILATORY FUNCTION

Journal/Book: Brit. J. Dis. Chest ( 1960) 54 210.. 1960;

Abstract: From the Cardio-Pulmonary Laboratory Veterans Administration Hospital East Orange New Jersey (Received for publication December 7 I959) Summary The literature on timed vital capacity is reviewed. In 400 patients with various chronic pulmonary diseases the one-second timed vital capacity was compared with the maximal breathing capacity. It was found that the determination of the one-second timed vital capacity with the aid of the Gaensler-Collins vitalometer is an easy and reliable method. A good correlation exists between the one-second timed vital capacity and maximal breathing capacity. When the individuals are grouped as "normal" and patients with "restrictive" obstructive and "combined" ventilatory defect the ratio: M.B.C. L. per minute/one-second timed vital capacity L. differs significantly between the groups except between the "obstructive" and "combined" groups. For clinical evaluation of ventilatory function the determination of the one-second timed vital capacity appears to be satisfactory.


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