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| Title: | MECHANICAL VENTILATOR FUNCTION UNDER HYPERBARIC CONDITIONS. |
| Authors: | Blanch, PB
Desautels, DA
Gallagher, TJ |
| Keywords: | Hyperbaric Oxygenation
hyperbaric conditions
Equipment Design
EQUIPMENT
ventilator
pneumatic time-cycled
pneumatic pressure-cycled
volume-cycled
piston
bellows
compression |
| Issue Date: | 1989 |
| Publisher: | Undersea and Hyperbaric Medical Society, Inc. |
| Citation: | Undersea Biomedical Research, Vol. 15, No. 1 Supplement, March 1989 |
| Abstract: | We studied whether hyperbaric conditions affected the function of 18 different mechanical ventilators. The ventilators studied were: Auto-vent (Life Support Products); Baby bird, IMV bird, Urgency bird, Mark 14 bird, and THE bird (Bird Products Corp.); BioMed IC 2A, BioMed ET--3, BioMed MVP--lO, and BioMed P--7 (BioMed Devices); Drager OxyLog (Drager Werk AG); Ohmeda Logic 7 (Ohmeda); PneuPac Model 2, PneuPac PNS 106, and Oxford Penlon (Bear Medical Systems);' Hydraulic Emerson (JH Emerson Co.); Monaghan 225 (Monaghan Medical Corp.); and Bennett PR--2 (Puritan-Bennett). One of each type of ventilator was set as close as possible to a rate of 10 breaths/min, a tidal volume of 1000 m1, and an inspiratory time of 1-2 seconds. Pressure in the chamber was then increased and output of the 3 settings was measured. The 18 ventilators were grouped for evaluation into three functional groups -- pneumatic time-cycled, pneumatic pressure-cycled, and volume-cycled (piston or bellows) ventilators. Function of these ventilators was consistent within each group with some minor exceptions, however, function varied between groups. The Oxford Penlon was the only commercially available ventilator to maintain rate, tidal volume, and inspiratory time during hyperbaric conditions. Use of other ventilators during hyperbaric oxygen therapy should be carefully considered because of the effects of compression. |
| Description: | Abstract of the Undersea and Hyperbaric Medical Society, Inc. Annual Scientific Meeting held 6-11 June 1989. Hawaiian Regent Hotel, Honolulu, Hawaii, USA (http://www.uhms.org) |
| URI: | http://archive.rubicon-foundation.org/6552 |
| Appears in Collections: | UHMS Meeting Abstracts
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