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Year : 2012  |  Volume : 28  |  Issue : 2  |  Page : 230-231

Complete bacterial filter blockage by a plastic film

1 Department of Anesthesia, Jewish Hospital and St. Mary's Healthcare; Anesthesiology and Perioperative Medicine, University of Louisville, Louisville, KY, USA
2 Department of Anesthesiology and Perioperative Medicine, University of Louisville, Louisville, KY, USA

Correspondence Address:
Jiapeng Huang
200 Abraham Flexner Way, Louisville, KY 40202
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0970-9185.94902

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We describe a case where the expiratory bacterial filter was completely blocked by a plastic membrane. Significantly increased airway pressures and inability to deliver adequate tidal volume to the patient were experienced. The cause of machine failure could not be identified until a complete preanesthesia machine manual check was performed. All machines and circuits should be checked manually, even with the availability of new and advanced self-tests in machines. Backup ventilation equipments and familiarity with signs of expiratory and inspiratory limb obstruction should not be underestimated.

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