Bacterial filters — are they necessary on anaesthetic machines?

Ping, F. C.; Oulton, J. L.; Smith, John A.; Skidmore, A G; Jenkins, Leonard C.

doi:10.1007/bf03006457

Cited by 22 publications

(2 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several researchers found low bacterial colonization of anesthetic machines after ventilating patients with pulmonary infection (11)(12)(13). However, the effect of prolonged mechanical ventilation of patients with pneumonia on ventilator has not yet been investigated.…”

Section: Introductionmentioning

confidence: 99%

Bacterial Contamination of Ventilators in the Intensive Care Unit

Motamedi¹,

Jarineshin²,

Mehrvarz³

et al. 2017

Trauma Mon

View full text Add to dashboard Cite

Objectives:To investigate the level of bacterial contamination in ventilation devices after being connected to head trauma patients with confirmed ventilator-associated pneumonia. Methods: This prospective, cross sectional study was carried out at Shahid Mohammadi hospital, Bandar-e Abbas, Iran. Samples for assessing the contamination of ventilators were obtained from expiratory and inspiratory tube insertion sites before connecting the device to the patients. The patients were then observed for the development of ventilator-associated pneumonia and were enrolled in the study if considered eligible. Sampling was repeated right after disconnecting the patient. The following variables were obtained from each patient: gender, age, Glasgow Coma Scale upon hospitalization, length of stay in the intensive care unit (ICU), and mortality. Results: A total of 33 patients, including 26 men and 7 women, were enrolled in the study. There was no significant association between ventilation contamination and time of sampling (before or after ventilation) in the evaluated sites (P > 0.05). However, based on McNemer's test for equality of frequencies, the prevalence of positive culture after disconnecting the device from the patients (60.6%) was not the same as the prevalence before being connected to the patients (21.2%) in inspiratory tube insertion sites (P = 0.002). Also, in both sites, the variety and pathogenicity of microorganisms after disconnecting the device were higher than those of microorganisms, colonized from samples which were obtained before connecting the device. Conclusions:The findings of the present study showed that mechanical ventilation of patients with pulmonary infection leads to the contamination of ventilators. These findings suggest the need for designing and implementing new measures, which are easily available in developing and resource-deficient countries in order to reduce the contamination of ventilation devices and prevent cross-contamination.

show abstract

Section: Introductionmentioning

confidence: 99%

Bacterial Contamination of Ventilators in the Intensive Care Unit

Motamedi¹,

Jarineshin²,

Mehrvarz³

et al. 2017

Trauma Mon

View full text Add to dashboard Cite

show abstract

“…They concluded that 'the use of bacterial filters was unnecessary when a strict regimen of cleaning and pasteurization of equipment was followed'. 11 Despite this, filters proliferated on the market, many combined with heat and moisture exchangers. Then, in 1993, five patients on a single operating list in New South Wales developed hepatitis C. 12 Subsequent investigations revealed that these patients had been operated on sequentially, using the same anaesthetic circuit, with the first of the patients having significant risk factors for the virus.…”

mentioning

confidence: 99%