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Wilcox ME, Burry L, Englesakis M, Coman B, Daou M, van Haren FM, Ely EW, Bosma KJ, Knauert MP. Intensive care unit interventions to promote sleep and circadian biology in reducing incident delirium: a scoping review. Thorax 2024; 79:988-997. [PMID: 38350730 DOI: 10.1136/thorax-2023-220036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 01/26/2024] [Indexed: 02/15/2024]
Abstract
RATIONALE/OBJECTIVES Despite plausible pathophysiological mechanisms, research is needed to confirm the relationship between sleep, circadian rhythm and delirium in patients admitted to the intensive care unit (ICU). The objective of this review is to summarise existing studies promoting, in whole or in part, the normalisation of sleep and circadian biology and their impact on the incidence, prevalence, duration and/or severity of delirium in ICU. METHODS A sensitive search of electronic databases and conference proceedings was completed in March 2023. Inclusion criteria were English-language studies of any design that evaluated in-ICU non-pharmacological, pharmacological or mixed intervention strategies for promoting sleep or circadian biology and their association with delirium, as assessed at least daily. Data were extracted and independently verified. RESULTS Of 7886 citations, we included 50 articles. Commonly evaluated interventions include care bundles (n=20), regulation or administration of light therapy (n=5), eye masks and/or earplugs (n=5), one nursing care-focused intervention and pharmacological intervention (eg, melatonin and ramelteon; n=19). The association between these interventions and incident delirium or severity of delirium was mixed. As multiple interventions were incorporated in included studies of care bundles and given that there was variable reporting of compliance with individual elements, identifying which components might have an impact on delirium is challenging. CONCLUSIONS This scoping review summarises the existing literature as it relates to ICU sleep and circadian disruption (SCD) and delirium in ICU. Further studies are needed to better understand the role of ICU SCD promotion interventions in delirium mitigation.
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Affiliation(s)
- M Elizabeth Wilcox
- Department of Critical Care Medicine, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - Lisa Burry
- Department of Pharmacy, Sinai Health System, Toronto, Ontario, Canada
- Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
| | - Marina Englesakis
- Library and Information Services, University Health Network, Toronto, Ontario, Canada
| | - Briar Coman
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Marietou Daou
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Frank Mp van Haren
- School of Medicine, Australian National University, Canberra, Australian Capital Territory, Australia
- University of New South Wales Medicine and Health, Sydney, New South Wales, Australia
- Intensive Care Unit, St George Hospital, Sydney, New South Wales, Australia
| | - E Wes Ely
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
- Critical Illness, Brain Dysfunction, and Survivorship (CIBS) Center, Vanderbilt University Medical Center, Nashville, TN, USA
- Geriatric Research, Education and Clinical Center (GRECC), Department of Veterans Affairs Medical Center, Tennessee Valley Health Care System, Nashville, TN, USA
| | - Karen J Bosma
- Department of Medicine, Schulich School of Medicine and Dentistry, London, Ontario, Canada
- Lawson Health Research Institute, London Health Sciences Centre, London, Ontario, Canada
- Department of Anesthesia and Perioperative Medicine, Schulich School of Medicine and Dentistry, London, Ontario, Canada
| | - Melissa P Knauert
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA
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Shorofi SA, Dadashian P, Arbon P, Moosazadeh M. The efficacy of earplugs and eye masks for delirium severity and sleep quality in patients undergoing coronary artery bypass grafting in cardiac intensive care units: A single-blind, randomised controlled trial. Aust Crit Care 2024; 37:74-83. [PMID: 37802695 DOI: 10.1016/j.aucc.2023.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 07/31/2023] [Accepted: 08/26/2023] [Indexed: 10/08/2023] Open
Abstract
BACKGROUND AND PURPOSE Delirium is a neuropsychiatric syndrome with a wide range of possible causes and multiple complications in patients admitted to intensive care units. It is, therefore, necessary to seek appropriate and safe strategies to prevent and manage delirium. This study is intended to examine the efficacy of eye masks and earplugs for delirium severity and sleep quality in patients with coronary artery bypass grafting in a cardiac intensive care unit. MATERIALS AND METHODS This single-blind, randomised controlled trial was conducted on 114 patients who were consecutively enrolled and randomly assigned to either the experimental group or the control group. The experimental group received routine care plus eye masks and earplugs, and the control group received only routine care. The delirium severity and sleep quality were measured with the Neelon and Champagne confusion scale and the Verran and Snyder-Halpern sleep scale. RESULTS The mean delirium severity score differed significantly between the two groups on the second, third, and fourth postoperative days (p < 0.001). Although the trend of changes in the mean delirium severity score from the first postoperative day (before the intervention) to the second, third, and fourth postoperative days was downward in the two groups (trending towards higher delirium severity), the control group experienced greater changes than the experimental group. An intragroup analysis of delirium severity detected a statistically significant difference in both the experimental and control groups (p < 0.001). The sleep quality domains (sleep disturbance, sleep effectiveness, sleep supplementation) showed a statistically significant difference between the two groups across the three intervention days (p < 0.001). CONCLUSION The overnight use of eye masks and earplugs were found to have positive effects on sleep quality domains (sleep disturbance, sleep effectiveness, sleep supplementation) and delirium severity in coronary artery bypass grafting patients admitted to the cardiac intensive care unit for several days. It was also found that a significant interaction effect between the sleep disturbance subscale and delirium severity exists. CLINICAL TRIAL REGISTRATION NUMBER (https://en.irct.ir): IRCT20210523051370N2.
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Affiliation(s)
- Seyed Afshin Shorofi
- Traditional and Complementary Medicine Research Center, Addiction Institute, Mazandaran University of Medical Sciences, Sari, Iran; Adjunct Research Fellow, Flinders University, Adelaide, Australia.
| | - Pooneh Dadashian
- Student Research Committee, School of Nursing and Midwifery, Mazandaran University of Medical Sciences, Sari, Iran
| | - Paul Arbon
- Torrens Resilience Institute, Flinders University, Adelaide, Australia
| | - Mahmood Moosazadeh
- Health Sciences Research Center, Addiction Institute, Mazandaran University of Medical Sciences, Sari, Iran
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Elliott R, Delaney L. Does improving sleep for the critically ill reduce the incidence and duration of delirium? An evidence-based review. Nurs Crit Care 2023; 28:738-743. [PMID: 37012638 DOI: 10.1111/nicc.12906] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 02/27/2023] [Accepted: 03/16/2023] [Indexed: 04/05/2023]
Abstract
Delirium is associated with poor patient outcome. Critical-care nurses maintain that patients with disrupted sleep appear to develop delirium. We sought to explore whether improving sleep in the critically ill patients reduced the incidence and duration of delirium. Our review of five relevant studies suggests that there is low-quality evidence that improving sleep may reduce the incidence of delirium. The bidirectional association between delirium and sleep stymies research in this area, and thus, establishing cause and effect, is difficult. Research exploring other patient-centred outcomes, such as pain intensity, suggests that enhancing sleep may improve these outcomes.
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Affiliation(s)
- Rosalind Elliott
- Intensive care unit, Royal North Shore Hospital, Northern Sydney Local Health District, St Leonards, 2065, Australia
- Nursing and Midwifery Directorate, Northern Sydney Local Health District, St Leonards, 2065, Australia
- Faculty of Health, University of Technology Sydney, Ultimo, 2007, Australia
| | - Lori Delaney
- Faculty of Health, Queensland University of Technology, George St, Brisbane, 4000, Australia
- College of Medicine and Health, Australian National University, Acton, Capital Hill, 2601, Australia
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Tiwari AM, Zirpe KG, Khan AZ, Gurav SK, Deshmukh AM, Suryawanshi PB, Kapse US, Wankhede PP, Bamne SN, Bhoyar AP, Malhotra RV, Sontakke SM, Borade PB. Incidence, Subtypes, Risk factors, and Outcome of Delirium: A Prospective Observational Study from Indian Intensive Care Unit. Indian J Crit Care Med 2023; 27:111-118. [PMID: 36865510 PMCID: PMC9973060 DOI: 10.5005/jp-journals-10071-24407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 01/13/2023] [Indexed: 02/05/2023] Open
Abstract
Background Delirium is a common, under-recognized, and often fatal condition in critically ill patients, characterized by acute disorder of attention and cognition. The global prevalence varies with a negative impact on outcomes. A paucity of Indian studies exists that have systematically assessed delirium. Objective A prospective observational study designed to determine the incidence, subtypes, risk factors, complications, and outcome of delirium in Indian intensive care units (ICUs). Patients and methods Among 1198 adult patients screened during the study period (December 2019-September 2021), 936 patients were included. The confusion assessment method score (CAM-ICU) and Richmond agitation sedation scale (RASS) were used, with additional confirmation of delirium by the psychiatrist/neurophysician. Risk factors and related complications were compared with a control group. Results Delirium occurred in 22.11% of critically ill patients. The hypoactive subtype was the most common (44.9%). The risk factors recognized were higher age, increased acute physiology and chronic health evaluation (APACHE-II) score, hyperuricemia, raised creatinine, hypoalbuminemia, hyperbilirubinemia, alcoholism, and smoking. Precipitating factors included patients admitted on noncubicle beds, proximity to the nursing station, requiring ventilation, as well as the use of sedatives, steroids, anticonvulsants, and vasopressors. Complications observed in the delirium group were unintentional removal of catheters (35.7%), aspiration (19.8%), need for reintubation (10.6%), decubitus ulcer formation (18.4%), and high mortality (21.3% vs 5%). Conclusion Delirium is common in Indian ICUs with a potential effect on length of stay and mortality. Identification of incidence, subtype, and risk factors is the first step toward prevention of this important cognitive dysfunction in the ICU. How to cite this article Tiwari AM, Zirpe KG, Khan AZ, Gurav SK, Deshmukh AM, Suryawanshi PB, et al. Incidence, Subtypes, Risk factors, and Outcome of Delirium: A Prospective Observational Study from Indian Intensive Care Unit. Indian J Crit Care Med 2023;27(2):111-118.
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Affiliation(s)
- Anand Mohanlal Tiwari
- Department of Neuro Trauma Unit, Ruby Hall Clinic, Pune, Maharashtra, India,Anand Mohanlal Tiwari, Department of Neuro Trauma Unit, Ruby Hall Clinic, Pune, Maharashtra, India, Phone: +91 7798255626, e-mail:
| | | | | | | | | | | | | | | | | | | | | | | | - Pankaj B Borade
- Department of Psychiatry, Ruby Hall Clinic, Pune, Maharashtra, India
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Kang J, Cho YS, Lee M, Yun S, Jeong YJ, Won YH, Hong J, Kim S. Effects of nonpharmacological interventions on sleep improvement and delirium prevention in critically ill patients: A systematic review and meta-analysis. Aust Crit Care 2022:S1036-7314(22)00062-5. [PMID: 35718628 DOI: 10.1016/j.aucc.2022.04.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 04/01/2022] [Accepted: 04/01/2022] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE Sleep disturbance and delirium are common problems experienced by critically ill patients in the intensive care unit (ICU). These interrelated issues increase the length of stay in the ICU but might also negatively affect long-term health outcomes. The objective of this study was to identify the nonpharmacological interventions provided to improve sleep or prevent delirium in ICU patients or both and integrate their effect sizes. REVIEW METHODS This study was a registered systematic review and meta-analysis. We searched MEDLINE, CINAHL, EMBASE, Web of Science, and Cochrane Library from their inception until December 2021. We included randomised controlled trials and nonrandomised controlled trials-(RCT) that provided nonpharmacological interventions and reported sleep or delirium as outcome variables. Studies not published in English or whose full text was not available were excluded. The quality of the evidence was assessed with version 2 of the Cochrane risk-of-bias tool for RCTs and the Risk Of Bias In Non-randomised Studies of Interventions (ROBINS-I). RESULTS The systematic review included 118 studies, and the meta-analysis included 100 studies. Overall nonpharmacological interventions had significant effects on subjective sleep quality (standardised mean difference = 0.30, 95% confidence interval [CI] = 0.05 to 0.56), delirium incidence (odds ratio = 0.62, 95% CI = 0.53 to 0.73), and delirium duration (standardised mean difference = -0.68, 95% CI = -0.93 to -0.43). In individual interventions, aromatherapy, music, and massage effectively improved sleep. Exercise, family participation, information giving, cognitive stimulation, bright light therapy, architectural intervention, and bundles/protocols effectively reduced delirium. Light/noise blocking was the only intervention that ensured both sleep improvement and delirium prevention. CONCLUSIONS Our results suggest nonpharmacological interventions improve sleep and prevent delirium in ICU patients. We recommend that ICU nurses use nonpharmacological interventions that promote person-environment compatibility in their clinical practice. The results of our review can guide nurses in adopting interventions related to sleep and delirium. PROSPERO REFERENCE NUMBER CRD42021230815.
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Affiliation(s)
- Jiyeon Kang
- College of Nursing, Dong-A University, Busan, South Korea
| | - Young Shin Cho
- Department of Nursing, Youngsan University, Gyeongnam, South Korea.
| | - Minju Lee
- Department of Nursing, Youngsan University, Gyeongnam, South Korea.
| | - Seonyoung Yun
- Department of Nursing, Youngsan University, Gyeongnam, South Korea
| | - Yeon Jin Jeong
- Department of Nursing, Dongju College, Busan, South Korea
| | - Youn-Hui Won
- Department of Nursing, Dong-A University Medical Center, Busan, South Korea
| | - Jiwon Hong
- College of Nursing, Dong-A University, Busan, South Korea
| | - Soogyeong Kim
- Surgery Intensive Care Unit, Kosin University Gospel Hospital, Busan, South Korea
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Topcu N, Tosun Z. Efforts to improve sleep quality in a medical intensive care unit: effect of a protocol of non-pharmacological interventions. Sleep Breath 2022; 26:803-810. [PMID: 35146570 DOI: 10.1007/s11325-022-02570-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 01/12/2022] [Accepted: 01/19/2022] [Indexed: 10/19/2022]
Abstract
PURPOSE This study aimed to evaluate the effect of a protocol of nonpharmacological interventions to improve sleep quality in the intensive care unit (ICU). Due to its close relationship with sleep quality, the effects of the same interventions on noise levels and delirium rates were also evaluated in this study. METHODS This pretest-posttest design with a control group was carried out in a medical ICU over 8 months. Data were collected using Acute Physiology and Chronic Health Evaluation II, the Glasgow Coma Scale, the Richmond Agitation-Sedation Scale, the Richards-Campbell Sleep Questionnaire (RCSQ), the Confusion Assessment Method for the Intensive Care Unit, and noise measurement devices. In the first phase of the study, patients receiving standard care in the ICU were followed. After the first stage, a training session was held for nurses to raise awareness and information. Then, the sleep-promoting protocol created by the researchers was applied. The ambient noise level was measured continuously. RESULTS A total of 78 patients with a mean age of 70.0 ± 13.2 years were followed in the ICU for an average of 7.3 ± 3.8 days. With protocol implementation, the ambient noise level in the ICU was reduced from 70.9 ± 3.8 dB(A) to 62.7 ± 3.5 dB(A) (p < 0.01); the RCSQ scores of the patients increased from 48.3 ± 1.4 to 62.1 ± 1.8 (p < 0.01). Although statistically nonsignificant, efforts to improve sleep quality also reduced the development of delirium by 15%. CONCLUSION It is possible to improve sleep quality and reduce noise levels in an ICU with a protocol consisting of multicomponent nonpharmacological interventions.
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Affiliation(s)
- Nihal Topcu
- Tekirdag Dr. Ismail Fehmi Cumalıoğlu City Hospital, Tekirdag, Turkey
| | - Zeynep Tosun
- Tekirdag Namik Kemal University Health College Nursing Department, Tekirdag, Turkey.
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Wibrow B, Martinez FE, Myers E, Chapman A, Litton E, Ho KM, Regli A, Hawkins D, Ford A, van Haren FMP, Wyer S, McCaffrey J, Rashid A, Kelty E, Murray K, Anstey M. Prophylactic melatonin for delirium in intensive care (Pro-MEDIC): a randomized controlled trial. Intensive Care Med 2022; 48:414-425. [DOI: 10.1007/s00134-022-06638-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 01/28/2022] [Indexed: 12/16/2022]
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