Benedict-Roth spirometer

Ben·e·dict-Roth spi·rom·e·ter

(bĕn'ĕ-dikt-rawth spī-rom'ĕ-tĕr)
Closed-circuit instrument used to determine oxygen consumption over time and to calculate basal metabolic rate. Each liter of oxygen consumed represents 4.825 calories.
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Other lung parameters like tidal volume ([V.sub.T] or T.V), Inspiratory reserve volume (I.R.V), Expiratory reserve volume (E.R.V), Vital capacity (V.C), Forced expiratory volume in first second ([FEV.sub.1]%) were recorded using the Benedict-Roth Spirometer.