Format

Send to

Choose Destination
Anesth Analg. 2011 Dec;113(6):1416-21. doi: 10.1213/ANE.0b013e318230b3cc. Epub 2011 Sep 29.

Forced-air warming does not worsen air quality in laminar flow operating rooms.

Author information

1
Department of Outcomes Research, Cleveland Clinic, Cleveland, Ohio, USA.

Abstract

BACKGROUND:

Warm air released by forced-air covers could theoretically disturb laminar airflow in operating rooms. We thus tested the hypothesis that laminar flow performance remains well within rigorous and objective standards during forced-air warming.

METHODS:

We evaluated air quality in 2 laminar flow operating rooms using a volunteer "patient" and heated manikin "surgeons." Reduction in tracer background particle counts near the site of a putative surgical incision was evaluated as specified by the rigorous DIN 1946-4:2008-12 standard. Results were confirmed using smoke as a visual tracer.

RESULTS:

Background tracer particle concentrations were reduced 4 to 5 log by the laminar flow system, and there were no statistically significant or clinically important differences with a forced-air blower set to off, ambient air, and high temperature. All values remained well within the requirements of the DIN 1946-4:2008-12 standard. Activation of a forced-air warming system did not create an upward draft or interfere with normal and effective function of the laminar flow process.

CONCLUSIONS:

Our results, based on quantitative performance testing methods, indicate that forced-air warming does not reduce operating room air quality during laminar flow ventilation. Because there is no decrement in laminar flow performance, forced-air warming remains an appropriate intraoperative warming method when laminar flow is used.

PMID:
21965373
DOI:
10.1213/ANE.0b013e318230b3cc
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Wolters Kluwer
Loading ...
Support Center