Bacteriologic evaluation of the Servo 150 hygroscopic condenser‐humidifier
作者:
DAVID POWNER,
CAROLYN SANDERS,
BRENDA BAILEY,
期刊:
Critical Care Medicine
(OVID Available online 1986)
卷期:
Volume 14,
issue 2
页码: 135-137
ISSN:0090-3493
年代: 1986
出版商: OVID
数据来源: OVID
摘要:
The Servo 150 hygroscopic condenser-humidifier was evaluated during use to determine if the inner foam core became contaminated and if a bacteria-laden aerosol was produced during the inspiratory cycle of the patient's mechanical ventilator. Cultures from the core and of inspired gas were obtained from seven patients with known culture-positive sputum, after 4, 8, 12 and 24 h of humidifier use. In each case, the inner foam core was grossly contaminated after 4 h of use and colony counts increased during the 24-h testing period. The bacteria recovered were the same as those cultured from sputum. Despite the core's heavy bacterial growth, a bacteria-laden aerosol occurred in only 43% of the samples obtained during humidifier use. The Servo humidifier does not appear to increase the risk of airway exposure to airborne bacteria during mechanical ventilation.
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