Noise Levels in a Hospital

Abstract

Noise measurements were performed in eight patients’ rooms, three intensive care units (ICUs) and oiie operating theatre at a large hospital (1300 beds). Daytime and nighttime Lacq in patients’ rooms and in ICUs were higher than the recommended standards. The measured noise levels could interfere with normal sleep and could be dangerous for patients at greatest risk. The laminar flow ventilation system was the main source of noise in the operating room. The LAeq recorded during a surgical procedure was sufficiently high to mask speech communication. The measurement of A-weighted sound pressure levels disclosed that staflf activities were responsible for the loudest noises. Air-conditioning systems and electromechanical instruments were also important contributors to noise pollution in the hospital. © 1984, National Institute of Occupational Safety and Health. All rights reserved.