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A control‐free ventilator alarm
Author(s) -
FODOR I.,
BLOOMFIELD D.,
FISHER A.,
KERR J.H.
Publication year - 1977
Publication title -
anaesthesia
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.839
H-Index - 117
eISSN - 1365-2044
pISSN - 0003-2409
DOI - 10.1111/j.1365-2044.1977.tb09969.x
Subject(s) - alarm , medicine , ventilation (architecture) , battery (electricity) , positive end expiratory pressure , breathing , respirator , intermittent positive pressure ventilation , medical emergency , intensive care medicine , anesthesia , mechanical ventilation , electrical engineering , mechanical engineering , materials science , quantum mechanics , composite material , engineering , power (physics) , physics
An alarm for use with positive-pressure lung ventilators is described. The device gives audible warning if the pressure in the patient circuit fails either to exceed or to fall below 15 cmH2O within a period of 20 seconds or if the batteries are running low. No external controls are provided and the alarm is activated when a probe connected to the breathing circuit is inserted into the alarm. The probe whistles if incorrectly connected during intermittent positive pressure ventilation. Battery life in clinical practice is longer than 6 months.