Vries, J. de

patient space emphysema patients volume value emphysema control slope 1 l vt space estimates alveolar breath relationship frequency breathing alveolar plateau asthma expiratory estimate curve breathing frequency increase airways obstruction asthma patients phase variable alveolar plateaux phase 3 airway group obstruction analysis pco 2 plateau breathsmin height intercept difference plateaux patient groups carbon expiratory volume function study dioxide bates dv fowler pre-interface expirate change ventilation diagnosis distribution table litre discriminant discriminant analysis volume curve capacity phase 2 decrease breath volumes physiol exacerbation disease reference values pneumotachometer head measurement regression analysis indices expiratory pco 2 /natural breathing frequency 5 min expiratory flow perfusion fev 1/vc pressure wolff subject 20 breathsmin result