A spirometric measurement device includes an arrangement for computation of a dynamic correction factor to compensate for temperature-related volume changes in time varying raw forced expiratory volume (FEV) data due to cooling of expired gas. The correction factor, which compensates for body-temperature-pressure-saturated...http://www.google.es/patents/US5277196?utm_source=gb-gplus-sharePatente US5277196 - Portable spirometer with improved accuracy
