Fig. 1From: Sound level intensity severely disrupts sleep in ventilated ICU patients throughout a 24-h period: a preliminary 24-h study of sleep stages and associated sound levelsSound during the 24-h period in ICU. Key On the left, the respective percentages of total sound occurrences per decibel unit between 59 and 95 dBC, are shown. 70% of noises occurrences are between 65 and 95 dBC. On the right, the average dBC level every 10 s during the 24-h period is shownBack to article page