Microbiological conditions of hospital beds before and after terminal cleaning

Abstract

The hospital's environment keeps a close relationship with hospital infection, which may promote focus of contact and transmission. The terminal cleaning of patient unit represents one way to control microbiological environmental contamination. The study has as its main objective to evaluate the microbiological conditions of hospital mattresses before and after cleaning. Rodac plates were utilized for specimen collection with culture medium - blood agar plate. The patients beds were chosen by criteria established before hand and the places for specimen collection in the mattress were chosen by aleatory drawing. To the study of numerical alteration related to the positivity of plates before and after cleaning, Goodman' statistics tests were used. From 52 mattress investigated, 520 culture plates were done from which 514 (98,8%) had a positive culture, 259 before cleaning and 255 after cleaning showing a reduction of positive cultures in only 4 plates after cleaning. The number of plates with countable and countless colonies suggests that the cleaning, as it is done, instead of reducing the microorganism is dislocating it to other areas of the mattress keeping the microbiological condition as it was before the cleaning process.