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Figure 3 | Critical Care

Figure 3

From: Effects of earplugs and eye masks on nocturnal sleep, melatonin and cortisol in a simulated intensive care unit environment

Figure 3

Urinary excretion of 6-SMT for different study conditions. Nocturnal urine 6-SMT concentration during baseline, NL and NLEE nights were 26.5 ± 20.0, 15.1 ± 13.6, and 22.3 ± 22.9 μg/kg, respectively. 6-SMT, 6-sulphatoxymelatonin; NL, recorded ICU noise and light exposure; NLEE, recorded ICU noise and light, subjects wore earplugs and eye masks.

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Critical Care

ISSN: 1364-8535