The Science Journal of the American Association for Respiratory Care

1999 OPEN FORUM Abstracts

EVALUATION OF THE PULMONETICS LTV-900 HOME VENTILATOR IN PEDIATRIC VENTILATOR DEPENDENT CHILDREN.

Elizabeth A. McCleary, R.R.T., Kathleen M. Barnum, R.R.T., Mary K Dekeon, R.R.T., Norma J. Maxvold, M.D., University of Michigan Medical Center, Mott Children's Hospital, Ann Arbor, MI

Background: The response in pressure triggered ventilators is frequently inadequate to meet the needs of a rapidly breathing pediatric patient. Currently, additional equipment is required in conventional home ventilators to provide continuous flow for this population. This additional equipment makes the conventional home ventilator more cumbersome and heavy. The size and portability of conventional home ventilators are frequently cited as barriers to developmental milestones in small patients who are learning to roll, crawl or walk. Additionally, ambulatory pediatric and young adult patients are also impacted by decreased portability.

Methods: The LTV-900 is an FDA approved home ventilator. The advantages of the LTV-900 over conventional home ventilators include portability and continuous flow capability. The purpose of this study was to evaluate the LTV-900 in a pediatric home ventilator population (8.0-80.0 kg). The evaluation took place at a summer camp for ventilator dependent children run by our medical center. Individual patients were placed on the LTV-900 during all aspects of camp activity (fishing, recreation, meals, etc) to replicate activities of daily living in these children. Caregivers assessed patient comfort and issues of portability during this trial.

Results: Physical characteristics of the LTV-900 are presented in the table below.

Dimensions 3 in ´ 10 in ´ 12 in
Weight 12.6 Ibs.
Features Control, A/C, SIMV, Pressure Support, CPAP, Apnea back-up, Variable rise time, Termination sensitivity, Variable time sensitivity, NPPV
Triggering Mechanism Flow
Battery Capability Internal, External
Monitoring Capability Peak Inspiratory Pressure
PEEP
Mean airway pressure
Total breath rate
Exhaled tidal volume
I/E ratio
Calculated peak flow
Inspiratory time 0.3-9.9 seconds
Retail Cost $11,333.00

No patient discomfort was noted during any activities or by any patient who participated in this trial. Assessment of portability was deemed superior to conventional home ventilators by all caregivers. User acceptance and ease of use (setup, adjustment, etc.) was also deemed superior.

Conclusions: Home ventilator units, which incorporate the additional features of the newer modes of ventilation, can provide a robust spectrum of support for infants through adults. The LTV-900 provides improved characteristics, which improve patient comfort, satisfaction and participation in activities of daily living even in the most diverse of environments.

OF-99-158

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