An evaluation of the microbial retention performance of three ventilator-circuit filters

Abstract

The 3 types of HME filter were effective microbial filters and comparable in their microbial retention.

Anesthesia breathing circuits protected by the DAR Barrierbac S® breathing filter have a low bacterial contamination rate

“…[19][20][21][22] However, it is difficult to compare laboratory studies to a clinical study like this one. First the conditions encountered in the clinical anesthetic setting where the filters are submitted to moisture, secretions, cough, bidirectional airflow and pressure changes differ from the laboratory settings.…”

Evaluation of Filters for the Sampling and Quantification of RNA Phage Aerosols

“…For these reasons, the coliphage MS2 (Golmohammadi et al 1993), a small non-enveloped bacterial virus (Leviviridae family) with a capsid diameter of 25 nm and a genome made of a single-stranded RNA (ssRNA) molecule (3569 nucleotides), has been used as an airborne viral model in many aerosol studies (Barker and Jones 2005;Burton et al 2007;Eninger et al 2009;Grinshpun et al 2007;Hogan et al 2005;Hogan et al 2006;Hogan et al 2004;Holton and Webb 1994;Kettleson et al 2009;Li et al 2009;Perrott et al 2009;Tseng and Li, 2005;Walker and Ko, 2007;Wang and Brion 2007). The Pseudomonas syringae virulent phage phi 6 is another well characterized bacterial virus that has some interesting features as a surrogate for RNA viruses, although it has been used only sporadically in aerosol studies (Ellis and Schlegel 1974).…”

Bacterial filters in respiratory circuits: An unnecessary cost?

“…There exist many experimental studies that verify the capacity of bacterial filters to avoid the crossing of microorganisms (12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30).…”