The Science Journal of the American Association for Respiratory Care
Background: PVs are designed for use during transport and subacute care. LTV 1000 (Pulmonetic Systems, Inc.) is a new PV that uses a internal flow generator. We evaluated the LTV 1000 in laboratory and clinical settings.
Methods: Lab) Ability of LTV1000 to deliver and measure set tidal volume (VT) during changing compliance (C) was evaluated. Gas consumption, batt duration, accuracy and response to changing FIO2, and alarm systems were assessed. A two-chamber lung model was used to evaluate triggering at different PEEP levels. Clin) Six pts requiring transport were ventilated with LTV 1000 at same settings as the ICU vent. Measured respiratory parameters and ABGs were compared between the LTV 1000 and ICU vent.
Results: Lab) There were small decreases in VT as C changed from 0.1 to 0.02 L/cmH2O. Measured VT was within 10% of actual VT at all conditions. An E-tank was used until ?low inlet pressure? alarm was activated (83
Conclusions: LTV 1000 is a versatile, reliable PV capable of maintaining gas exchange and respiratory mechanics comparable to current ICU ventilators.