Ambient sound levels in a state psychiatric hospital.

High environmental and psychosocial stress contribute to the onset and relapse of major psychiatric disorders. High sound levels in general hospitals are common and may be indirectly associated with negative physical effects because of increased physiological stress on the body. Excessive sound also interferes with cognitive functioning, especially affecting prefrontal cortical processes, but no information about sound levels in psychiatric hospitals was available. This study critically examines literature on sound stress and reports findings from an exploratory study of sound levels in a tertiary care psychiatric hospital. An overall mean sound level of 75.68 dB was found, with peak sound levels as high as 85 to 90 dB, in the range that causes hearing loss. These levels, higher than sound levels on medical, surgical, and intensive care units, suggest the need for more attention to the effect that environmental sound has on the behavior of patients hospitalized with acute psychiatric symptoms.

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