Skip to main content

Table 4 Sleep parameters during NIV and during spontaneous breathing in study 2 patients

From: Sleep continuity: a new metric to quantify disrupted hypnograms in non-sedated intensive care unit patients

Parameters

During NIV (number = 24)

During SB (number = 24)

P value

TST (minutes)

250 (166 to 330)

98 (42 to 176)

0.0003

Stage N1 (%)

6 (3 to 13)

15 (10 to 26)

0.003

Stage N2 (%)

36 (25 to 52)

49 (23 to 63)

0.6

Stage N3 (%)

38 (12 to 47)

6 (0 to 26)

0.003

REM (%)

13 (3 to 21)

1 (0 to 5)

0.005

Fragmentation (n/h)

26 (14 to 35)

39 (28 to 58)

0.002

  1. Fragmentation, number of arousals and awakenings per hour of sleep. Values are median (25th to 75th percentiles). P values from the Wilcoxon rank test. NIV: non-invasive ventilation; REM: rapid eye movement sleep; SB: spontaneous breathing; TST, total sleep time.
Back to article page

Critical Care

ISSN: 1364-8535