The effect of earplugs during the night on the onset of delirium and sleep perception: a randomized controlled trial in intensive care patients.

Abstract:

INTRODUCTION:This study hypothesised that a reduction of sound during the night using earplugs could be beneficial in the prevention of intensive care delirium. Two research questions were formulated. First, does the use of earplugs during the night reduce the onset of delirium or confusion in the ICU? Second, does the use of earplugs during the night improve the quality of sleep in the ICU? METHODS:A randomized clinical trial included adult intensive care patients in an intervention group of 69 patients sleeping with earplugs during the night and a control group of 67 patients sleeping without earplugs during the night. The researchers were blinded during data collection. Assignment was performed by an independent nurse researcher using a computer program. Eligible patients had an expected length of stay in the ICU of more than 24 hours, were Dutch- or English-speaking and scored a minimum Glasgow Coma Scale of 10. Delirium was assessed using the validated NEECHAM scale, sleep perception was reported by the patient in response to five questions. RESULTS:The use of earplugs during the night lowered the incidence of confusion in the studied intensive care patients. A vast improvement was shown by a Hazard Ratio of 0.47 (95% confidence interval (CI) 0.27 to 0.82). Also, patients sleeping with earplugs developed confusion later than the patients sleeping without earplugs. After the first night in the ICU, patients sleeping with earplugs reported a better sleep perception. CONCLUSIONS:Earplugs may be a useful instrument in the prevention of confusion or delirium. The beneficial effects seem to be strongest within 48 hours after admission. The relation between sleep, sound and delirium, however, needs further research. TRIAL REGISTRATION:Current Controlled Trials ISRCTN36198138.

journal_name

Crit Care

authors

Van Rompaey B,Elseviers MM,Van Drom W,Fromont V,Jorens PG

doi

10.1186/cc11330

subject

Has Abstract

pub_date

2012-05-04 00:00:00

pages

R73

issue

3

eissn

1364-8535

issn

1466-609X

pii

cc11330

journal_volume

16

pub_type

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