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Performance Evaluation of the ADS 1000 Ventilator Using a Lung Model
Author(s) -
Faudskar L.S.,
Raffe M. R.,
Randall D. A.,
Bing D. R.
Publication year - 1997
Publication title -
journal of veterinary emergency and critical care
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.886
H-Index - 47
eISSN - 1476-4431
pISSN - 1479-3261
DOI - 10.1111/j.1476-4431.1997.tb00044.x
Subject(s) - medicine , tidal volume , peak inspiratory pressure , ventilation (architecture) , respiratory minute volume , pulmonary compliance , anesthesia , endotracheal tube , respiratory physiology , lung , respiratory system , physics , intubation , thermodynamics
Summary A laboratory evaluation was performed to evaluate the performance characteristics of a new veterinary ventilator. The ventilator studied was configured according to manufacturer's directions and attached to a test lung via a pneumotachograph and differential pressure transducer interfaced to a pulmonary mechanics analyzer system. Constant resistance (R=10 cm H 2 O/L/sec) and compliance (C=3 ml/cm H 2 O) factors were maintained for all trials. The ventilator operated at the manufacturer's preprogrammed parameters. In the first trial, body weight was the only variable. In the second trial, an endotracheal tube was placed in series between the ventilator's breathing circuit and the pneumotachograph. Body weights from 1–20 kgs were evaluated. Mean values for respiratory rate (RR), minute ventilation (VE), inspiratory time (Ti), peak inspiratory pressure (PIP), and peak inspiratory flow (Fpki) displayed on the ventilator control panel; tidal volume (VT), calculated from the displayed minute volume, and identical parameters measured by the pulmonary mechanics system at each body weight, were compared using a two factor analysis of variance. Significant differences (P< 0.05) were found between mean displayed and measured values for RR, PIP, and Fpki.