Canadian Medical Guide > Analytical, Diagnostic and Therapeutic Techniques and Equipment > Equipment and Supplies > Ventilators, Mechanical > Ventilators, Negative-Pressure Terms and Definitions

Ventilators, Negative-Pressure

Medical Definition:	Body ventilators that assist ventilation by applying intermittent subatmospheric pressure around the thorax, abdomen, or airway and periodically expand the chest wall and inflate the lungs. They are relatively simple to operate and do not require tracheostomy. These devices include the tank ventilators ("iron lung"), Portalung, Pneumowrap, and chest cuirass ("tortoise shell").
Also Called:	Tank Ventilators
Previously Indexed:	Respiration, Artificial (1966-1989),Ventilators, Mechanical (1966-1989)

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