{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,13]],"date-time":"2026-03-13T14:27:11Z","timestamp":1773412031334,"version":"3.50.1"},"reference-count":27,"publisher":"European Respiratory Society (ERS)","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Eur Respir J"],"accepted":{"date-parts":[[2000,12,12]]},"published-print":{"date-parts":[[2001,6]]},"abstract":"<jats:p>The elastic pressure\/volume (<jats:italic>P<\/jats:italic>\/<jats:italic>V<\/jats:italic>) curve obtained by the multiple linear regression (MLR) technique using a new model, was compared with the quasi-static<jats:italic>P<\/jats:italic>\/<jats:italic>V<\/jats:italic>points obtained by the rapid airway occlusion technique.<\/jats:p><jats:p>Seven infants were studied during mechanical ventilation using a pressure controlled mode. The resistive pressure was subtracted from airway opening pressure, thus determining the elastance related pressure, which was then plotted against the volume to make an MLR-elastance curve. Quasi-static<jats:italic>P<\/jats:italic>\/<jats:italic>V<\/jats:italic>curves of the rapid occlusion technique were constructed by plotting the different inspiratory and expiratory volumes against the corresponding values of the quasi-static airway pressure.<\/jats:p><jats:p>The calculated MLR-elastance curves closely fit the experimental quasi-static<jats:italic>P<\/jats:italic>\/<jats:italic>V<\/jats:italic>points obtained by the occlusion technique. There were, however, some discrepancies due to the viscoelastic behaviour of the respiratory system.<\/jats:p><jats:p>Although slightly altered by these discrepancies, the multiple linear regression-elastance curves did fit the observed quasi-static pressure\/volume characteristics for use in clinical practice. 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