Abstract
Bacteria-carrying particles released by surgical staff are the main factors leading to surgical site infections (SSI). Operating rooms must be designed to reduce risks of such infections. In this numerical study, the effect of different ceiling heights on particle dispersion and deposition are studied for an operating room with laminar airflow (LAF) system. Two different particle diameters (12 and 20 ìm) are tested under three different ceiling heights (2.43–2.8–3.0 m) at a constant air change rate (ACH=20). Numerical predictions are performed by using the commercial software ANSYS Fluent 16.0. The results reveal that decreasing of the ceiling height reduces the amount of particle deposited on the surgical table.
Highlights
It is very important to provide sustainable hygienic environment along with clinical needs for operating rooms (OR)
Most surgical staff is located near the surgical table, which increase the possible transmission of bacteria carrying particles (BCPs) to the open tissue
As it is seen from the figure, the magnitude of the air velocity over the surgical table decreases with an increase in the ceiling height
Summary
It is very important to provide sustainable hygienic environment along with clinical needs for operating rooms (OR). Surgical staff is the main source of bacteria carrying particles (BCPs) in an operating room. Particle size considered as infection risk at the surgical staff and patient is from 4 μm to 20 μm [1]. Most surgical staff is located near the surgical table, which increase the possible transmission of BCPs to the open tissue. The amount of released particles from the staff depends on many factors like clothing, posture and activity level. Mean value of particles released from a surgical staff is 1.5 BCP/s [2]
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