SESSION TITLE: Critical Care Posters I
SESSION TYPE: Original Investigation Poster
PRESENTED ON: Wednesday, October 28, 2015 at 01:30 PM - 02:30 PM
PURPOSE: Exposure to elevated levels of light and sound within the intensive care unit (ICU) has been associated with negative outcomes. Past analyses of continuous measurement of light and sound have been inconsistent. We conducted a pilot study on the feasibility of continuous recording of light and sound and their correlation with human activities in an ICU at a tertiary care cancer center.
METHODS: We used the IC Sentinel ® (Oberon, Inc. State College, PA), a continuous recording device, to measure sound and light levels during a 2-week period in March 2015 within a patient room and a staff workstation in the ICU at Memorial Sloan Kettering Cancer Center. Concomitantly, we recorded human activities hourly, including procedures, oxygen delivery modality, electronic devices, number of visitors in the patient room, and number of staff members at the workstation. We then correlated human activities to peaks of sound and light.
RESULTS: Light levels were high averaging 100 lux during the night at the staff workstation, rarely achieving moonlight levels of 1 lux recommended to facilitate sleep. Inside patient rooms, however, we were able to achieve darkness simulating nighttime. Human activities in both locations correlated with peaks of inappropriate sound levels. Patient handoffs, rounds, intubations, and line placement caused levels up to 65 dB. Noninvasive positive pressure ventilation generated the most noise at 70 dB, higher than ventilators which measured around 55 dB. At all times, noise levels in the ICU were above the Environmental Protection Agency and World Health Organization’s recommended guidelines of a maximum of 40 dB.
CONCLUSIONS: Continuous recording of light and sound is relatively easy and feasible in the ICU. Light levels were elevated at inappropriate times and sound levels were highest with human activities.
CLINICAL IMPLICATIONS: Staff and architect awareness of these data may curb the levels of light and sound that patients are exposed to in an ICU.
DISCLOSURE: The following authors have nothing to disclose: Kelly Reynolds, Louis Voigt, Maryam Mehryar, Natalie Kostelecky, Gleb Kirnicinii, Stephen Pastores, Neil Halpern
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