Abstract
This was a cross-sectional study to compare the infection rate between laminar air flow and non-laminar air flow operation theater (OT). This was bi-center study and study places were the OT complexes of Sylhet Women’s Medical College Hospital (SWMCH) and Al Haramain Hospital Pvt. Ltd. of Sylhet. A Total 24 samples were collected from 12 OTs. Air and wall swab both types of samples were collected from each OT. Out of these 12 OTs 4 had laminar air flow system. Half of the air samples (50%) and 8.3% of wall samples were infected, whereas overall organism isolation rate was 29.17%. Among all the infected samples 25% were from laminar air flow OTs and the rest 75% were from non-laminar air flow OTs. Commonest isolated bacteria was staphylococcus epidermidis (62.5%) followed by bacillusspp (25%) and staphylococcus aureus (12.5%). staphylococcus epidermidis was predominantly found in General Surgery, Obstetrics and septic OTs. Distance from entry or toilet did not show any significant difference in infection rate in operation theaters.
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