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Faisal H, Qamar F, Hsu ES, Xu J, Lai EC, Wong ST, Masud FN. Prevalence of Delirium After Abdominal Surgery and Association With Ketamine: A Retrospective, Propensity-Matched Cohort Study. Crit Care Explor 2024; 6:e1032. [PMID: 38222873 PMCID: PMC10786598 DOI: 10.1097/cce.0000000000001032] [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] [Indexed: 01/16/2024] Open
Abstract
IMPORTANCE Delirium is a common postoperative complication for older patients in the ICU. Ketamine, used primarily as an analgesic, has been thought to prevent delirium. OBJECTIVE Determine the prevalence and association of delirium with low-dose ketamine use in ICU patients after abdominal surgery. DESIGN Single-center, retrospective, propensity-matched cohort study. SETTING Eight hospital academic medical center. PATIENTS Cohort comprising 1836 patients admitted to the ICU after abdominal surgery between June 23, 2018 and September 1, 2022. MAIN OUTCOMES AND MEASURES Propensity score matching (PSM) with a 3:1 ratio between no-ketamine use and ketamine use was performed through a greedy algorithm (caliper of 0.005). Outcomes of interest included: delirium (assessed by Confusion Assessment Method-ICU), mean pain score (Numeric Pain Scale or Critical Care Pain Observation Tool score as available), mean opioid consumption (morphine milligram equivalents), length of stay (d), and mortality. RESULTS Prevalence of delirium was 47.71% (95% CI, 45.41-50.03%) in the cohort. Of 1836 patients, 120 (6.54%) used low-dose ketamine infusion. After PSM, the prevalence of delirium was 56.02% (95% CI, 51.05-60.91%) in all abdominal surgery patients. The ketamine group had 41% less odds of delirium (odds ratio [OR] = 0.59; 95% CI, 0.37-0.94; p = 0.026) than patients with no-ketamine use. Patients with ketamine use had higher mean pain scores (3.57 ± 2.86 vs. 2.21 ± 2.09, p < 0.001). In the subgroup analysis, patients in the ketamine-use group 60 years old or younger had 64% less odds of delirium (OR = 0.36; 95% CI, 0.13-0.95; p = 0.039). The mean pain scores were higher in the ketamine group for patients 60 years old or older. There was no significant difference in mortality and opioid consumption. CONCLUSIONS AND RELEVANCE Low-dose ketamine infusion was associated with lower prevalence of delirium in ICU patients following abdominal surgery. Prospective studies should further evaluate ketamine use and delirium.
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Affiliation(s)
- Hina Faisal
- Department of Surgery, Houston Methodist, Houston, TX
- Department of Surgery, Weill Cornell Medicine, New York, NY
| | - Fatima Qamar
- Department of Cardiothoracic Surgery, Houston Methodist, Houston, TX
| | - En Shuo Hsu
- Center for Health Data Science and Analytics, Houston Methodist, Houston, TX
| | - Jiaqiong Xu
- Center for Health Data Science and Analytics, Houston Methodist, Houston, TX
| | - Eugene C Lai
- Stanley H. Appel Department of Neurology, Houston Methodist, Houston, TX
| | - Stephen T Wong
- Department of Systems Medicine and Bioengineering and Houston Methodist Neal Cancer Center, Houston Methodist, Houston, TX
| | - Faisal N Masud
- Center for Critical Care, Houston Methodist, Houston, TX, USA
- Department of Anesthesiology, Weill Cornell Medical College, New York, NY
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Ankravs MJ, McKenzie CA, Kenes MT. Precision-based approaches to delirium in critical illness: A narrative review. Pharmacotherapy 2023; 43:1139-1153. [PMID: 37133446 DOI: 10.1002/phar.2807] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 03/08/2023] [Accepted: 03/21/2023] [Indexed: 05/04/2023]
Abstract
Delirium occurs in critical illness and is associated with poor clinical outcomes, having a longstanding impact on survivors. Understanding the complexity of delirium in critical illness and its deleterious outcome has expanded since early reports. Delirium is a culmination of predisposing and precipitating risk factors that result in a transition to delirium. Known risks range from advanced age, frailty, medication exposure or withdrawal, sedation depth, and sepsis. Because of its multifactorial nature, different clinical phenotypes, and potential neurobiological causes, a precise approach to reducing delirium in critical illness requires a broad understanding of its complexity. Refinement in the categorization of delirium subtypes or phenotypes (i.e., psychomotor classifications) requires attention. Recent advances in the association of clinical phenotypes with clinical outcomes expand our understanding and highlight potentially modifiable targets. Several delirium biomarkers in critical care have been examined, with disrupted functional connectivity being precise in detecting delirium. Recent advances reinforce delirium as an acute, and partially modifiable, brain dysfunction, and place emphasis on the importance of mechanistic pathways including cholinergic activity and glucose metabolism. Pharmacologic agents have been assessed in randomized controlled prevention and treatment trials, with a disappointing lack of efficacy. Antipsychotics remain widely used after "negative" trials, yet may have a role in specific subtypes. However, antipsychotics do not appear to improve clinical outcomes. Alpha-2 agonists perhaps hold greater potential for current use and future investigation. The role of thiamine appears promising, yet requires evidence. Looking forward, clinical pharmacists should prioritize the mitigation of predisposing and precipitating risk factors as able. Future research is needed within individual delirium psychomotor subtypes and clinical phenotypes to identify modifiable targets that hold the potential to improve not only delirium duration and severity, but long-term outcomes including cognitive impairment.
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Affiliation(s)
- Melissa J Ankravs
- Pharmacy Department and Intensive Care Unit, Royal Melbourne Hospital, Parkville, Victoria, Australia
- Department of Critical Care, Melbourne Medical School, The University of Melbourne, Parkville, Victoria, Australia
| | - Cathrine A McKenzie
- School of Medicine, Perioperative and Critical Care Theme, University of Southampton, National Institute of Health and Social Care Research (NIHR), Biomedical Research Centre, Southampton, UK
- NIHR Wessex Applied Research Collaborative (ARC), Southampton Science Park, Southampton, UK
- Pharmacy and Critical Care, University Hospital, Southampton, Southampton, UK
- School of Cancer and Pharmacy, Institute of Pharmaceutical Sciences, King's College London, London, UK
| | - Michael T Kenes
- Department of Clinical Pharmacy, College of Pharmacy, University of Michigan, Ann Arbor, Michigan, USA
- Department of Pharmacy, Michigan Medicine Hospital, Ann Arbor, Michigan, USA
- The Max Harry Weil Institute for Critical Care Research and Innovation, University of Michigan, Ann Arbor, Michigan, USA
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Asai Y, Yanagawa T, Takahashi M. Effect of pharmacist-led intervention protocol on preventing postoperative delirium after elective cardiovascular surgery. PLoS One 2023; 18:e0292786. [PMID: 37824500 PMCID: PMC10569577 DOI: 10.1371/journal.pone.0292786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 09/08/2023] [Indexed: 10/14/2023] Open
Abstract
Postoperative delirium (PD) is an acute brain dysfunction, with a particularly high incidence after cardiovascular surgery. Pharmacist-led interventions show limited evidence in attenuating PD in cardiovascular surgery. In this retrospective cohort study, we aimed to clarify the risk factors of PD for cardiovascular surgery focused on pharmacotherapy and elucidate the effect of pharmacist-led intervention on the PD attenuation rate based on protocol-based pharmaceutical management (PBPM). This study included 142 adult patients who underwent elective valve replacement or valvuloplasty. The risk factors for PD were investigated using multivariate logistic regression analysis. Taking risk factors into consideration, a protocol was developed to discontinue benzodiazepines prescriptions by ward pharmacists, and replace with ramelteon and suvorexant if all the following factors apply: 1) number of medications ≥ 6 drugs, 2) number of doses to take ≥ 4 times, and 3) regular use of benzodiazepines or insomnia. Subsequently, the PD rate was compared during a period of two years and 6 months between the pre-PBPM (n = 39) and post-PBPM (n = 62). The PD rate for elective valve replacement or valvuloplasty was 25% (35/142). The adjusted odds ratio for polypharmacy was 3.3 (95% confidence interval: 1.2-8.9, p = 0.016), suggesting that preoperative risk assessment may be essential for patients with polypharmacy. The PD rate significantly decreased to 13% (8/62) in the post-PBPM group compared with 33% (13/39) in the pre-PBPM group (p = 0.014). There was a significant decrease in benzodiazepines use in post-PBPM compared with pre-PBPM (p = 0.026); however, the rate of ramelteon and orexin receptor antagonists use increased by PBPM introduction (p < 0.001). Although the present PBPM still requires further modification, it is simple and potentially useful for pharmacists to assess the risk of patients undergoing any elective cardiovascular surgery.
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Affiliation(s)
- Yuki Asai
- Pharmacy, National Hospital Organization Mie Chuo Medical Center, Hisaimyojin, Tsu, Mie, Japan
| | - Tatsuki Yanagawa
- Pharmacy, National Hospital Organization Mie Chuo Medical Center, Hisaimyojin, Tsu, Mie, Japan
| | - Masaaki Takahashi
- Pharmacy, National Hospital Organization Mie Chuo Medical Center, Hisaimyojin, Tsu, Mie, Japan
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Hart JL. Family presence during critical illness may protect against delirium. Evid Based Nurs 2023; 26:102. [PMID: 36669867 DOI: 10.1136/ebnurs-2022-103637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/30/2022] [Indexed: 01/22/2023]
Affiliation(s)
- Joanna L Hart
- Palliative and Advanced Illness Research Center, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
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Morishita S, Yamamoto R, Yamada Y. Potential Biases in Critical Care Observational Studies: Comments on an Observational Study on Association Between Family Presence and Delirium in Critically Ill Patients. Crit Care Med 2023; 51:e124-e125. [PMID: 37052446 DOI: 10.1097/ccm.0000000000005805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Affiliation(s)
- Shigemi Morishita
- Department of Surgery, Kagoshima Seikyo General Hospital, Kagoshima, Japan
| | - Ryohei Yamamoto
- Department of Healthcare Epidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
- Department of Intensive Care Medicine, Kameda Medical Center, Kamogawa, Japan
| | - Yoshie Yamada
- Department of Healthcare Epidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
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Mohsen ST, Stelfox HT, Fiest KM. The authors reply. Crit Care Med 2023; 51:e125-e126. [PMID: 37052447 DOI: 10.1097/ccm.0000000000005830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Affiliation(s)
- Samiha T Mohsen
- Department of Critical Care Medicine, Alberta Health Services & University of Calgary, Calgary, AB, Canada
- Department of Community Health Sciences & O'Brien Institute for Public Health, University of Calgary, Calgary, AB, Canada
| | - Henry T Stelfox
- Department of Critical Care Medicine, Alberta Health Services & University of Calgary, Calgary, AB, Canada
- Department of Community Health Sciences & O'Brien Institute for Public Health, University of Calgary, Calgary, AB, Canada
| | - Kirsten M Fiest
- Department of Critical Care Medicine, Alberta Health Services & University of Calgary, Calgary, AB, Canada
- Department of Community Health Sciences & O'Brien Institute for Public Health, University of Calgary, Calgary, AB, Canada
- Department of Psychiatry & Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
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Zhou H, Wu X, Yu L. The comforting companion: using AI to bring loved one's voices to newborns, infants, and unconscious patients in ICU. Crit Care 2023; 27:135. [PMID: 37024968 PMCID: PMC10080746 DOI: 10.1186/s13054-023-04418-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 03/27/2023] [Indexed: 04/08/2023] Open
Affiliation(s)
- Hongkun Zhou
- Hepatopancreatobiliary Surgery Department, The Affiliated Hospital of Jiaxing University, 1882 Central-South Road, Jiaxing, 314001, Zhejiang Province, People's Republic of China
| | - Xiaojun Wu
- Hepatopancreatobiliary Surgery Department, The Affiliated Hospital of Jiaxing University, 1882 Central-South Road, Jiaxing, 314001, Zhejiang Province, People's Republic of China
| | - Linghua Yu
- Gastroenterology and Hepatology Department, Institute of Liver Diseases, The Affiliated Hospital of Jiaxing University, 1882 Central-South Road, Jiaxing, 314001, Zhejiang Province, People's Republic of China.
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Modrykamien AM. Enhancing the awakening to family engagement bundle with music therapy. World J Crit Care Med 2023; 12:41-52. [PMID: 37034022 PMCID: PMC10075048 DOI: 10.5492/wjccm.v12.i2.41] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/19/2022] [Accepted: 02/02/2023] [Indexed: 03/07/2023] Open
Abstract
Survivors of prolonged intensive care unit (ICU) admissions may present undesirable long-term outcomes. In particular, physical impairment and cognitive dysfunction have both been described in patients surviving episodes requiring mechanical ventilation and sedation. One of the strategies to prevent the aforementioned outcomes involves the implementation of a bundle composed by: (1) Spontaneous awakening trial; (2) Spontaneous breathing trial; (3) Choosing proper sedation strategies; (4) Delirium detection and management; (5) Early ICU mobility; and (6) Family engagement (ABCDEF bundle). The components of this bundle contribute in shortening length of stay on mechanical ventilation and reducing incidence of delirium. Since the first description of the ABCDEF bundle, other relevant therapeutic factors have been proposed, such as introducing music therapy. This mini-review describes the current evidence supporting the use of the ABCDEF bundle, as well as current knowledge on the implementation of music therapy.
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Affiliation(s)
- Ariel M Modrykamien
- Department of Pulmonary and Critical Care, Baylor University Medical Center, Dallas, TE 75246, United States
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Decreasing Delirium Through Family Presence: It Is a Complex Equation. Crit Care Med 2022; 50:1683-1685. [PMID: 36227042 DOI: 10.1097/ccm.0000000000005663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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