Effective Strategies to Reduce Noise and Noise Related Distractions in the ICU : a Stepped Wedge Cluster Randomized Controlled Trial

Patients admitted to the intensive care unit (ICU) undergo complex critical care treatment and are consequently surrounded by equipment and monitors contributing to high sound pressure levels. In addition, many medical and nursing ICU staff members work together with numerous visiting consultants resulting in an additional sound burden. As is already known, in the ICU environment, many activities carried out by healthcare professionals, require a high level of concentration. So, the noisy ICU environment causes interruptions in activities that require concentration and induce in this way, a higher potential for errors. The World Health Organization (WHO) and the Environmental Protection Agency (EPA) set standards for sound levels in hospitals with a recommendation for patient treatment areas. There is a clear trend for increasing hospital noise since the sixties. According to healthcare professionals, one of the strongest contributing factors of noise in the ICU environment are monitoring alarms as they occur very frequently. Additionally, ICU nurses experience high levels of stress towards clinical alarms and are becoming alarm fatigue, which means that the staff becomes desensitized because of an excessive number of alarms and may disable or silence alarms without checking the patient . Consensus dictates the importance of reducing sound pressure levels and the numerous alarm signals from monitor alarms in the ICU. In the study, we focus on busy predetermined areas in the ICU.

This study aims to determine the effect of an intervention bundle, aimed at the reduction of "noise" (decibels) and its effect on health care professionals.