title: Determination of mode of ventilation using OSRE.
abstract: This study classifies the mode of ventilation using respiratory rate, inhaled and exhaled carbon dioxide concentrations in anaesthetised patients. Thirty seven patients were breathing spontaneously (SPONT) and 50 were on a ventilator (intermittent positive pressure ventilation, IPPV). A data-based methodology for rule inference from trained neural networks, orthogonal search-based rule extraction, identified two sets of low-order Boolean rules for differential identification of the mode of ventilation. Combining both models produced three possible outcomes; IPPV, SPONT and 'Uncertain'. The true positive rates were approximately maintained at 96% for IPPV and 93% for SPONT, with false positive rates of 0.4% for each category and 4.3% 'Uncertain' inferences.
authors.affiliation: Department of Anaesthesia and Perioperative Medicine, Auckland City Hospital, Auckland, New Zealand. DanF@adhb.govt.nz
authors.forename: D
authors.initials: D
authors.lastname: Faulke
authors.forename: T A
authors.initials: TA
authors.lastname: Etchells
authors.forename: M J
authors.initials: MJ
authors.lastname: Harrison
authors.forename: P J G
authors.initials: PJ
authors.lastname: Lisboa
mesh_terms: D016022:Case-Control Studies; D006801:Humans; D012121:Respiration, Artificial; D012143:Respiratory Physiological Phenomena