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Qiu H, Zador Z, Lannon M, Farrokhyar F, Duda T, Sharma S. Identification of clinically relevant patient endotypes in traumatic brain injury using latent class analysis. Sci Rep 2024; 14:1294. [PMID: 38221527 PMCID: PMC10788338 DOI: 10.1038/s41598-024-51474-0] [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: 07/07/2023] [Accepted: 01/05/2024] [Indexed: 01/16/2024] Open
Abstract
Traumatic brain injury (TBI) is a complex condition where heterogeneity impedes the advancement of care. Understanding the diverse presentations of TBI is crucial for personalized medicine. Our study aimed to identify clinically relevant patient endotypes in TBI using latent class analysis based on comorbidity data. We used the Medical Information Mart for Intensive Care III database, which includes 2,629 adult TBI patients. We identified five stable endotypes characterized by specific comorbidity profiles: Heart Failure and Arrhythmia, Healthy, Renal Failure with Hypertension, Alcohol Abuse, and Hypertension. Each endotype had distinct clinical characteristics and outcomes: The Heart Failure and Arrhythmia endotype had lower survival rates than the Renal Failure with Hypertension despite featuring fewer comorbidities overall. Patients in the Hypertension endotype had higher rates of neurosurgical intervention but shorter stays in contrast to the Alcohol Abuse endotype which had lower rates of neurosurgical intervention but significantly longer hospital stays. Both endotypes had high overall survival rates comparable to the Healthy endotype. Logistic regression models showed that endotypes improved the predictability of survival compared to individual comorbidities alone. This study validates clinical endotypes as an approach to addressing heterogeneity in TBI and demonstrates the potential of this methodology in other complex conditions.
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Affiliation(s)
- Hongbo Qiu
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, ON, Canada.
| | - Zsolt Zador
- Division of Neurosurgery, McMaster University, Hamilton, ON, Canada
| | - Melissa Lannon
- Division of Neurosurgery, McMaster University, Hamilton, ON, Canada
| | - Forough Farrokhyar
- Department of Health, Evidence and Impact, McMaster University, Hamilton, ON, Canada
| | - Taylor Duda
- Division of Neurosurgery, McMaster University, Hamilton, ON, Canada
| | - Sunjay Sharma
- Division of Neurosurgery, McMaster University, Hamilton, ON, Canada
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Bujaroska Perkovikj M, Anastasova L, Stankov A, Zhivikj Z, Poposka V, Petrusevska-Tozi L. The role of alcohol and patterns of alcohol-related deaths in Republic of North Macedonia within the period 2007-2020. Forensic Sci Med Pathol 2023:10.1007/s12024-023-00748-6. [PMID: 37946096 DOI: 10.1007/s12024-023-00748-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/02/2023] [Indexed: 11/12/2023]
Abstract
Excessive alcohol consumption is one of the most important factors in a substantial number of violent deaths. The aim of our study was to investigate alcohol-related deaths in the Republic of North Macedonia in the period from 2007 to 2020, in order to study the influence of elevated blood alcohol levels in violent deaths. Five hundred sixty-four post-mortem blood samples from alcohol-related death cases-natural deaths and violent deaths (suicides, accidents, and homicides)-were analyzed, and the results were evaluated according to sex, age, and cause of death. Among 564 cases, traffic accidents were the leading cause of violent death (54.3% of the cases) followed by suicides (19.9% of the cases). In the examined post-mortem samples, BAC values ranged from 0.15-6.20 g/L. The average age was 45 ± 16 years for the male and 49 ± 19 years for the female group. The biggest proportion of high BAC values was found in the group of accidents specifically road traffic accidents and accidental intoxication as well as in the group of bolus deaths. The analysis of BAC in the cases of violent deaths in the Republic of North Macedonia confirmed that consumption of alcohol is strongly related to violent deaths. The data obtained from this study could raise caution and give aid in a national strategy for the prevention of alcohol-related violent deaths.
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Affiliation(s)
- Marija Bujaroska Perkovikj
- Institute of Forensic Medicine, Criminology and Medical Deontology, Medical Faculty, Ss. Cyril and Methodius University in Skopje, Mother Theresa 19, 1000, Skopje, Republic of North Macedonia.
| | - Liljana Anastasova
- Institute of Applied Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy, Ss. Cyril and Methodius University in Skopje, Mother Theresa 47, 1000, Skopje, Republic of North Macedonia
| | - Aleksandar Stankov
- Institute of Forensic Medicine, Criminology and Medical Deontology, Medical Faculty, Ss. Cyril and Methodius University in Skopje, Mother Theresa 19, 1000, Skopje, Republic of North Macedonia
| | - Zoran Zhivikj
- Institute of Applied Biochemistry, Faculty of Pharmacy, Ss. Cyril and Methodius University in Skopje, Mother Theresa 47, 1000, Skopje, Republic of North Macedonia
| | - Verica Poposka
- Institute of Forensic Medicine, Criminology and Medical Deontology, Medical Faculty, Ss. Cyril and Methodius University in Skopje, Mother Theresa 19, 1000, Skopje, Republic of North Macedonia
| | - Lidija Petrusevska-Tozi
- Institute of Applied Biochemistry, Faculty of Pharmacy, Ss. Cyril and Methodius University in Skopje, Mother Theresa 47, 1000, Skopje, Republic of North Macedonia
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Cvetković D, Živković V, Lukić V, Nikolić S. Unnatural and Violent Death in Cases with High Blood Alcohol Concentration- Autopsy Study. J Forensic Sci 2017; 62:1506-1511. [PMID: 28230897 DOI: 10.1111/1556-4029.13460] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 01/03/2017] [Accepted: 01/05/2017] [Indexed: 12/01/2022]
Abstract
The use of alcohol increases the risk of dying from unnatural or violent causes. The presented study explored the distribution of age, gender, cause, and circumstances of death in persons who died in an unnatural and violent manner, with a blood alcohol concentration (BAC) higher than 0.3 g/dL, and where the cause of death was not alcohol intoxication. We defined the control (0 < BAC < 0.3 g/dL) and study (BAC ≥ 0.3 g/dL) groups, as in subjects with these concentrations, there is a significant risk of gross intoxication, stupor, and death. The subjects from the study group were older, with no difference in gender distribution. Traffic accidents were the most common fatal event in both groups, followed by suicides. Other accidents (choking on food and exposure to fire) were more frequent in the study group. Compared to the control group, subjects from the study group were older persons whose deaths were mainly accidental.
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Affiliation(s)
- Danica Cvetković
- Institute of Forensic Medicine, University of Belgrade - School of Medicine, Belgrade, 11000, Serbia
| | - Vladimir Živković
- Institute of Forensic Medicine, University of Belgrade - School of Medicine, Belgrade, 11000, Serbia
| | - Vera Lukić
- Institute of Forensic Medicine, University of Belgrade - School of Medicine, Belgrade, 11000, Serbia
| | - Slobodan Nikolić
- Institute of Forensic Medicine, University of Belgrade - School of Medicine, Belgrade, 11000, Serbia
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Abstract
Alcohol abuse and dependence are serious public health problems worldwide, resulting in significant morbidity, mortality, and legal implications. Therefore, sudden unexpected, suspicious, or violent death in alcohol consuming persons are frequently seen in the forensic setting. Alcohol-induced brain damage is predominantly caused by nutritional deficiencies and repeated withdrawal syndrome. Brain lesions associated with heavy alcohol consumption include brain atrophy, hepatic encephalopathy, and central pontine myelinolysis. In addition, the dementing conditions Wernicke-Korsakoff syndrome, acquired hepatocerebral degeneration, Marchiafava-Bignami disease, and pellagrous encephalopathy are closely associated with chronic alcohol consumption. In neuroradiological and autopsy studies, cerebral and cerebellar atrophy has been demonstrated in alcoholics. There is a regional selectivity, with the frontal lobes being particularly affected. Moreover, a disproportionate loss of cerebral white matter relative to cerebral cortex suggests that a major neurotoxic effect of chronic alcohol consumption predominantly affects the white matter.
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Affiliation(s)
- Andreas Büttner
- Forensic Pathology and the Institute of Legal Medicine at the Medical University of Rostock, Germany
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