Scand J Work Environ Health 2009;35(5):376-383 pdf
https://doi.org/10.5271/sjweh.1347 | Published online: 25 Aug 2009, Issue date: 00 Oct 2009
Evaluation of respiratory effects related to high-pressure cleaning in a piggery with and without robot pre-cleaning
Objective Exposure in connection with cleaning piggeries induces airway inflammation. The aim of this study was to compare the health effects related to two different cleaning processes in a piggery.
Methods In a cross-over study design, 12 subjects were randomly exposed for three hours during the cleaning of a piggery with a high pressure water jet, with and without pre-cleaning using a robot. We assessed lung function, bronchial responsiveness, symptoms, body temperature, and exhaled nitric oxide, and performed blood sampling and nasal lavage before and after both exposures.
Results Compared with ordinary cleaning without the use of a robot, pre-cleaning with a robot significantly reduced the increase in bronchial responsiveness (P=0.049), total cell number (P=0.0029), and pro-inflammatory cytokines (IL-8 level [P=0.016]) in nasal lavage, and diminished the increase in neutrophils (P=0.0029) in the blood.
Conclusion Pre-cleaning of a piggery with a robot reduced exposure to dust and endotoxin, and resulted in an attenuation of the increase in bronchial responsiveness and the airway inflammatory response compared pre-cleaning without a robot.
Key terms airway inflammation; cleaning; evaluation; high-pressure cleaning; organic dust; piggery; pre-cleaning; respiratory effect; robot; robot pre-cleaning