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Rahimi M, Hosseini SM, Mohtarami SA, Mostafazadeh B, Evini PET, Fathy M, Kazemi A, Khani S, Mortazavi SM, Soheili A, Vahabi SM, Shadnia S. Prediction of acute methanol poisoning prognosis using machine learning techniques. Toxicology 2024; 504:153770. [PMID: 38458534 DOI: 10.1016/j.tox.2024.153770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 02/21/2024] [Accepted: 03/03/2024] [Indexed: 03/10/2024]
Abstract
Methanol poisoning is a global public health concern, especially prevalent in developing nations. This study focuses on predicting the severity of methanol intoxication using machine learning techniques, aiming to improve early identification and prognosis assessment. The study, conducted at Loghman Hakim Hospital in Tehran, Iran. The data pertaining to individuals afflicted with methanol poisoning was retrieved retrospectively and divided into training and test groups at a ratio of 70:30. The selected features were then inputted into various machine learning methods. The models were implemented using the Scikit-learn library in the Python programming language. Ultimately, the efficacy of the developed models was assessed through ten-fold cross-validation techniques and specific evaluation criteria, with a confidence level of 95%. A total number of 897 patients were included and divided in three groups including without sequel (n = 573), with sequel (n = 234), and patients who died (n = 90). The two-step feature selection was yielded 43 features in first step and 23 features in second step. In best model (Gradient Boosting Classifier) test dataset metric by 32 features younger age, higher methanol ingestion, respiratory symptoms, lower GCS scores, type of visual symptom, duration of therapeutic intervention, ICU admission, and elevated CPK levels were among the most important features predicting the prognosis of methanol poisoning. The Gradient Boosting Classifier demonstrated the highest predictive capability, achieving AUC values of 0.947 and 0.943 in the test dataset with 43 and 23 features, respectively. This research introduces a machine learning-driven prognostic model for methanol poisoning, demonstrating superior predictive capabilities compared to traditional statistical methods. The identified features provide valuable insights for early intervention and personalized treatment strategies.
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Affiliation(s)
- Mitra Rahimi
- Toxicological Research Center, Excellence Center of Clinical Toxicology, Department of Clinical Toxicology, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sayed Masoud Hosseini
- Toxicological Research Center, Excellence Center of Clinical Toxicology, Department of Clinical Toxicology, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyed Ali Mohtarami
- Department of Computer Engineering and Information Technology (PNU), Tehran, Iran
| | - Babak Mostafazadeh
- Toxicological Research Center, Excellence Center of Clinical Toxicology, Department of Clinical Toxicology, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Peyman Erfan Talab Evini
- Toxicological Research Center, Excellence Center of Clinical Toxicology, Department of Clinical Toxicology, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mobin Fathy
- Students Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Arya Kazemi
- Students Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Sina Khani
- Students Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyed Mohammad Mortazavi
- Students Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amirali Soheili
- Students Research Committee, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran; Rajaie Cardiovascular Medical and Research Center, Iran university of medical sciences, Tehran, Iran
| | | | - Shahin Shadnia
- Toxicological Research Center, Excellence Center of Clinical Toxicology, Department of Clinical Toxicology, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Amanollahi A, Shadnia S, Mehrabi Y, Etemad K. Association between intoxication with psychoactive substances and adverse effects occurrence in consumers. Front Public Health 2023; 11:1228854. [PMID: 37822541 PMCID: PMC10563510 DOI: 10.3389/fpubh.2023.1228854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 08/28/2023] [Indexed: 10/13/2023] Open
Abstract
Background The prevalence of psychoactive substance use is increasing worldwide and identifying adverse effects of these types of drugs is necessary in intoxicated patients. Objective We aimed to investigate the association of psychoactive substance intoxication with their adverse effects on the functioning of the bodily organs. Methods This was a single-center study between March 2019 and April 2022 on intoxicated patients with psychoactive substances. Inclusion criteria were intoxication with alcohol, opioids, and stimulants, and having available results of laboratory biomarkers. Demographic and clinical data of patients at the time of admission as well as during hospitalization were reviewed, retrospectively. Data were analyzed using a generalized linear mixed model in R software and the Adjusted Odds Ratio (AOR) was estimated. Results A total of 800 hospitalized patients in the ICU (n = 400) and general ward (n = 400) were divided into two groups of intoxicated with alcohol (n = 200) and opioids or stimulants (n = 200). Liver (AOR = 0.15, p = 0.033; AOR = 0.13, p = 0.007) and kidney (AOR = 0.46, p = 0.004; AOR = 0.24, p = 0.021) dysfunction occurred less in the ICU and general ward, respectively, in opioids or stimulants intoxication compared to alcohol. Cardiovascular dysfunctions occurred more in opioids or stimulants intoxication compared to alcohol in both ICU (AOR = 10.32, p < 0.0001) and general ward (AOR = 4.74, p < 0.0001). Conclusion Kidney dysfunctions had a greater effect on mortality compared to other dysfunctions. During the follow-up, the incidence of dysfunctions increased in those intoxicated with opioids or stimulants. Men experienced more liver and kidney dysfunctions as well as mortality, but psychoactive substance experience was a protective factor in cardiovascular dysfunctions and mortality.
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Affiliation(s)
- Alireza Amanollahi
- Department of Epidemiology, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Shahin Shadnia
- Department of Clinical Toxicology, Toxicological Research Center, Loghman Hakim Hospital, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Yadollah Mehrabi
- Department of Epidemiology, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Koorosh Etemad
- Department of Epidemiology, School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Günay N, Taheri S, Memiş M, Yilmaz Şükranli Z, Şahin T, Demiryürek Ş, Ekici Günay N, Aslan YE, Demiryürek AT. Male- and female-specific microRNA expression patterns in a mouse model of methanol poisoning. Food Chem Toxicol 2023; 174:113666. [PMID: 36780935 DOI: 10.1016/j.fct.2023.113666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/29/2023] [Accepted: 02/09/2023] [Indexed: 02/13/2023]
Abstract
The aims of this study were to determine the miRNAs involved in the methanol poisoning, and identify the male- and female-specific miRNA expression patterns in mice. Methanol was applied orally at the doses of 4 g/kg and 8 g/kg to induce mild and severe methanol poisoning in Balb/c mice. miRNA expression levels were detected at 3 different time periods (30, 60, and 180 min) following methanol exposure. miRNA expression profiles were determined using the high-throughput Fluidigm BioMark real-time PCR. We observed that serum miR-206 expression in male mice and miR-6357 expression in female mice could be an indicator of methanol poisoning. miR-9-3p downregulation and miR-1187 upregulation could be important for liver tissue. miR-3106-5p and miR-133a-5p upregulations and miR-122-3p downregulation could be poison biomarkers for ocular tissue in male mice. However, miR-194-5p downregulation could be a biomarker for ocular tissue in female mice. miR-122-5p and miR-124-3p downregulations and miR-499a-5p upregulation appeared to be important for kidney tissue in male mice. miR-543 and miR-6342 upregulations could be potential candidate biomarkers for kidney tissue in female mice. Our study is the first to report that differential miRNA expressions are involved in blood and tissues in male and female mice after methanol treatment.
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Affiliation(s)
- Nurullah Günay
- Department of Emergency Medicine, Faculty of Medicine, Erciyes University, Kayseri, 38039, Turkey.
| | - Serpil Taheri
- Department of Medical Biology, Faculty of Medicine, Erciyes University, Kayseri, 38280, Turkey; Erciyes University, Betül-Ziya Eren Genome and Stem Cell Center (GENKOK), Kayseri, 38280, Turkey
| | - Mehmet Memiş
- Erciyes University, Betül-Ziya Eren Genome and Stem Cell Center (GENKOK), Kayseri, 38280, Turkey; Erciyes University, Gevher Nesibe Genome and Stem Cell Institute, Department of Medical Biology and Genetics, Kayseri, 38280, Turkey
| | - Zeynep Yilmaz Şükranli
- Erciyes University, Betül-Ziya Eren Genome and Stem Cell Center (GENKOK), Kayseri, 38280, Turkey
| | - Taner Şahin
- Kayseri City Hospital, Clinics of Emergency Medicine, Kayseri, 38080, Turkey
| | - Şeniz Demiryürek
- Department of Physiology, Faculty of Medicine, Gaziantep University, Gaziantep, 27310, Turkey
| | - Nahide Ekici Günay
- Kayseri City Hospital, Clinics of Medical Biochemistry, Kayseri, 38080, Turkey
| | - Yusuf Ertugrul Aslan
- Department of Emergency Medicine, Faculty of Medicine, Erciyes University, Kayseri, 38039, Turkey
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KARAER BÜBERCİ R, KARAHİSAR ŞİRALİ S, DURANAY M. The predictors of mortality in patients with methyl alcohol intoxication. J Health Sci Med / JHSM 2022. [DOI: 10.32322/jhsm.1102111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Aim: Methanol intoxication is a worldwide public health problem. Mortality rates are quite high unless there is early intervention and diagnosis. The aim of this study was to investigate the predictors of mortality in patients with methyl alcohol intoxication.
Material and Method: The study included 18 patients admitted to emergency department of our hospital in 2019-2020, who were diagnosed with methanol intoxication. Laboratory parameters and basic features of the patients were recorded. According to the criteria of 2012 Clinical Practice Guideline for Acute Kidney Injury (AKI), patients were diagnosed with AKI.
Results: The mean age of the patients was 45.7±15.21 years and 72.2% of those were male. The mortality and AKI rate were 38.9% and 44.4%, respectively. In regression analyses, delay in admission to hospital, low Glasgow coma scale score, AKI development and high lactate level were independent predictors of mortality. According to ROC analyses when lactate level was more than 5.75 mmol/L, mortality rate increased more rapidly.
Conclusion: Mortality rate is very high in methanol intoxication. Patients with AKI and high lactate levels should be intervened faster.
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Affiliation(s)
- Refika KARAER BÜBERCİ
- Sağlık Bilimleri Üniversitesi, Ankara Eğitim ve Araştırma Hastanesi, Nefroloji Kliniği
| | | | - Murat DURANAY
- Sağlık Bilimleri Üniversitesi, Ankara Eğitim ve Araştırma Hastanesi, Nefroloji Kliniği
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DOĞAN M. Examination of patients admitted to a university hospital with methanol intoxication. J Health Sci Med / JHSM 2022. [DOI: 10.32322/jhsm.1107285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Objective: The aim of this study is to evaluate the demographic data, clinical features and laboratory findings of patients followed up with methanol poisoning in our internal medicine clinic. In addition, to examine the data of the patients followed in our intensive care unit and to contribute to the literature in this direction.
Material and Method: In this study, 21 patients diagnosed with methanol intoxication who were hospitalized in the internal medicine clinic of our hospital between 01.01.2019 and 01.04.2022 were included. Demographic information of the patients, initial complaints, accompanying symptoms, laboratory results, blood gas values, intensive care unit requirements, mechanical ventilation needs, length of hospital stay and whether they received hemodialysis treatment were recorded from the hospital automation system.
Results: 21 patients were included in the study. The mean time for patients to apply to the hospital after drinking alcohol was calculated as 31.42±4.27 hours. The mean hospital stay was 3.0±1.02 days. While 12 patients were followed up in the intensive care unit, it was found that 6 patients needed mechanical ventilation and 9 patients needed hemodialysis. Glucose, creatinine, acetyl aminotransferase (AST), partial carbon dioxide pressure (PaCO2), lactate, anion gap and base gap were found to be statistically significantly higher in the group treated in the intensive care unit (p
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Affiliation(s)
- Murat DOĞAN
- Çorum Hitit Üniversitesi EAH İç Hastalıkları
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Zhu BT. Biochemical mechanism underlying the pathogenesis of diabetic retinopathy and other diabetic complications in humans: the methanol-formaldehyde-formic acid hypothesis. Acta Biochim Biophys Sin (Shanghai) 2022; 54:415-51. [PMID: 35607958 DOI: 10.3724/abbs.2022012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Hyperglycemia in diabetic patients is associated with abnormally-elevated cellular glucose levels. It is hypothesized that increased cellular glucose will lead to increased formation of endogenous methanol and/or formaldehyde, both of which are then metabolically converted to formic acid. These one-carbon metabolites are known to be present naturally in humans, and their levels are increased under diabetic conditions. Mechanistically, while formaldehyde is a cross-linking agent capable of causing extensive cytotoxicity, formic acid is an inhibitor of mitochondrial cytochrome oxidase, capable of inducing histotoxic hypoxia, ATP deficiency and cytotoxicity. Chronic increase in the production and accumulation of these toxic one-carbon metabolites in diabetic patients can drive the pathogenesis of ocular as well as other diabetic complications. This hypothesis is supported by a large body of experimental and clinical observations scattered in the literature. For instance, methanol is known to have organ- and species-selective toxicities, including the characteristic ocular lesions commonly seen in humans and non-human primates, but not in rodents. Similarly, some of the diabetic complications (such as ocular lesions) also have a characteristic species-selective pattern, closely resembling methanol intoxication. Moreover, while alcohol consumption or combined use of folic acid plus vitamin B is beneficial for mitigating acute methanol toxicity in humans, their use also improves the outcomes of diabetic complications. In addition, there is also a large body of evidence from biochemical and cellular studies. Together, there is considerable experimental support for the proposed hypothesis that increased metabolic formation of toxic one-carbon metabolites in diabetic patients contributes importantly to the development of various clinical complications.
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Nikoo MH, Estedal A, Pakfetrat M, Abtahi F, Heydari ST. Mortality-related electrocardiogram indices in methanol toxicity. World J Emerg Med 2022; 13:226-228. [PMID: 35646209 PMCID: PMC9108912 DOI: 10.5847/wjem.j.1920-8642.2022.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Accepted: 10/26/2021] [Indexed: 09/17/2023] Open
Affiliation(s)
- Mohammad Hossein Nikoo
- Non-communicable Diseases Research Center, Shiraz University of Medical Sciences, Shiraz 71345-1877, Iran
| | - Alireza Estedal
- Health Policy Research Center, Institute of Health, Shiraz University of Medical Sciences, Shiraz 71345-1877, Iran
| | - Maryam Pakfetrat
- Department of Internal Medicine, Shiraz Nephro-Urology Research Center, Shiraz University of Medical Sciences, Shiraz 71345-1877, Iran
| | - Firoozeh Abtahi
- Departement of Cardiology, Cardiovascular Research Center, Shiraz University of Medical Sciences, Shiraz 71345-1877, Iran
| | - Seyed Taghi Heydari
- Health Policy Research Center, Institute of Health, Shiraz University of Medical Sciences, Shiraz 71345-1877, Iran
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Zamani N, Gheshlaghi F, Haghighi-Morad M, Bahrami-Motlagh H, Alavi Darazam I, Hadeiy SK, McDonald R, Hassanian-Moghaddam H. Prevalence of clinical and radiologic features in methanol-poisoned patients with and without COVID-19 infection. Acute Med Surg 2021; 8:e715. [PMID: 34925862 PMCID: PMC8647202 DOI: 10.1002/ams2.715] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 11/05/2021] [Accepted: 11/16/2021] [Indexed: 02/05/2023] Open
Abstract
Aim The aim of the current study was to evaluate the prevalence of coronavirus disease (COVID‐19) in methanol‐poisoned patients admitted to two toxicology academic centers during the COVID‐19 outbreak and determine their clinical features and chest/brain computed tomography (CT) findings. Methods Methanol‐poisoned patients who had been referred during the COVID‐19 pandemic were evaluated for signs and symptoms of COVID‐19 by chest CT scans and/or polymerase chain reaction test. Results A total of 62 patients with confirmed methanol poisoning were enrolled in the study, with a median (interquartile range) age of 35 (28–44) years. Thirty‐nine (62.9%) survived. Nine (14.5%) were diagnosed to have COVID‐19, of whom four survived. There was a significant correlation between COVID‐19 disease and a history of alcohol consumption (p = 0.036; odds ratio 1.7; 95% confidence interval, 1.3–2.2). Univariate analysis showed significant differences between infected and noninfected patients regarding their urea and time for first and second hemodialysis sessions, as well as the duration of ethanol administration. Conclusions In conclusion, during the pandemic, specific attention should be paid to patients with a history of alcohol ingestion and elevated creatinine, loss of consciousness, and severe acidosis as these signs/symptoms could be present in both COVID‐19 and methanol poisoning, making differentiation between the two challenging.
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Affiliation(s)
- Nasim Zamani
- Social Determinants of Health Research Center Shahid Beheshti University of Medical Sciences Tehran Iran.,Department of Clinical Toxicology Loghman-Hakim Hospital School of Medicine Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Farzad Gheshlaghi
- Department of Clinical Toxicology Isfahan Clinical Toxicology Research Center School of Medicine Isfahan University of Medical Sciences Isfahan Iran
| | - Maryam Haghighi-Morad
- Department of Radiology Loghman-Hakim Hospital School of Medicine Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Hooman Bahrami-Motlagh
- Department of Radiology Loghman-Hakim Hospital School of Medicine Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Ilad Alavi Darazam
- Department of Infectious Diseases Loghman-Hakim Hospital School of Medicine Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Seyed Kaveh Hadeiy
- Social Determinants of Health Research Center Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Rebecca McDonald
- Institute of Psychiatry, Psychology and Neuroscience National Addiction Centre King's College London London UK
| | - Hossein Hassanian-Moghaddam
- Social Determinants of Health Research Center Shahid Beheshti University of Medical Sciences Tehran Iran.,Department of Clinical Toxicology Loghman-Hakim Hospital School of Medicine Shahid Beheshti University of Medical Sciences Tehran Iran
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Sharif AF, AlAmeer MR, AlSubaie DS, Alarfaj NH, AlDawsari MK, AlAslai KM, BuSaleh MJ, AlSabr AI, Al-Mulhim KA. Predictors of poor outcomes among patients of acute methanol intoxication with particular reference to Sequential Organ Failure Assessment (SOFA) score. Environ Sci Pollut Res Int 2021; 28:60511-60525. [PMID: 34156622 DOI: 10.1007/s11356-021-14998-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 06/15/2021] [Indexed: 06/13/2023]
Abstract
Methanol intoxication is a global problem with serious morbidities and mortalities. Apart from the lifelong disabilities experienced by methanol intoxication survivors, mortality rates of up to 44% of exposed patients have been reported. The aim of the current study was to outline the early findings that could be utilized as effective in-hospital outcome predictors among cases of methanol exposure. Furthermore, the role of the Sequential Organ Failure Assessment (SOFA) score was evaluated as an early in-hospital outcome indicator among patients presented with acute methanol intoxication. A multicenter study including 37 patients diagnosed with acute methanol intoxication and referred to three major poison control centers in Saudi Arabia during the past 3 years (January 1, 2018-January 1, 2021) was conducted. Data including demographics, exposure history, presenting complaints, clinical findings, and laboratory investigation were collected. The patients were scored on Glasgow Coma Scale (GCS), Poison Severity Score (PSS), and SOFA score on admission. Out of the presented patients, 83.8% were alcoholic men. No deaths have been reported, and 51.4% were discharged with unfavorable outcomes, including 29.7% suffered optic neuropathy and blindness, 18.9% showed acute renal impairment, and 10.8% were complicated with respiratory failure. The diastolic blood pressure, anion gap, visual acuity, number of hemodialysis sessions, PSS, duration of Intensive Care Unit (ICU) stay, and SOFA score were all significant organ failure predictors (P < 0.05). However, only the SOFA score showed the best significant prediction on multivariate analysis, with an odds ratio (95% confidence interval) of 0.10 (0.04-0.17) and P = 0.003. At a cutoff of greater than 4.5, the SOFA score could significantly predict unfavorable outcomes with area under curve (AUC) = 0.955, accuracy 89.2%, specificity 94.4%, and sensitivity 84.2%. Early identification of methanol exposed patients at risk is critical and lifesaving. The SOFA score is a substantially useful and early inclusive unfavorable outcome predictor.
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Affiliation(s)
- Asmaa Fady Sharif
- Forensic Medicine and Clinical Toxicology Department, Faculty of Medicine, Tanta University, El Geish Street, Tanta, Gharbia, 31527, Egypt.
- Clinical Medical Sciences Department, College of Medicine, Dar Al Uloom University, Riyadh, Saudi Arabia.
| | - Mahdi Riyadh AlAmeer
- Clinical Medical Sciences Department, College of Medicine, Dar Al Uloom University, Riyadh, Saudi Arabia
- Respiratory Care Department, Riyadh Care Hospital, Riyadh, Saudi Arabia
| | - Duhaim Saad AlSubaie
- Clinical Medical Sciences Department, College of Medicine, Dar Al Uloom University, Riyadh, Saudi Arabia
- Emergency Medicine Department, Prince Sultan Military Medical City (PSMMC), Riyadh, Saudi Arabia
| | - Naser Husam Alarfaj
- Clinical Medical Sciences Department, College of Medicine, Dar Al Uloom University, Riyadh, Saudi Arabia
- Administartion of Radiology Department, King Saud Medical City (KSMC), Riyadh, Saudi Arabia
| | - Mubarak Khalifah AlDawsari
- Clinical Medical Sciences Department, College of Medicine, Dar Al Uloom University, Riyadh, Saudi Arabia
- Diagnostic Radiology Department, Prince Sultan Military Medical City (PSMMC), Riyadh, Saudi Arabia
| | - Khalid Mansour AlAslai
- Clinical Medical Sciences Department, College of Medicine, Dar Al Uloom University, Riyadh, Saudi Arabia
- Emergency Medicine Department, Prince Mohammed Bin Abdulaziz Hospital (PMAH), Riyadh, Saudi Arabia
| | - Mahmoud Jawad BuSaleh
- Clinical Medical Sciences Department, College of Medicine, Dar Al Uloom University, Riyadh, Saudi Arabia
| | - Abdulaziz Ibrahim AlSabr
- Clinical Medical Sciences Department, College of Medicine, Dar Al Uloom University, Riyadh, Saudi Arabia
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Nekoukar Z, Zakariaei Z, Taghizadeh F, Musavi F, Banimostafavi ES, Sharifpour A, Ebrahim Ghuchi N, Fakhar M, Tabaripour R, Safanavaei S. Methanol poisoning as a new world challenge: A review. Ann Med Surg (Lond) 2021; 66:102445. [PMID: 34141419 DOI: 10.1016/j.amsu.2021.102445] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 05/21/2021] [Accepted: 05/23/2021] [Indexed: 02/07/2023] Open
Abstract
Background Methanol poisoning (MP) occurs often via ingestion, inhalation, or dermal exposure to formulations containing methanol in base. Clinical manifestations of MP include gastrointestinal symptoms, central nervous system (CNS) suppression, and decompensated metabolic acidosis occurred with blurred vision and early or late blindness. Objective This study reviewed the clinical manifestations, laboratory and radiology findings, and treatment approaches in MP. Discussion Methanol is usually rapidly absorbed after ingestion and metabolized by alcohol dehydrogenase (ADH), then distributed to the body water to reach a volume distribution approximately equal to 0.77 L/kg. It is also eliminated from the body as unchanged parent compounds. Clinical manifestations of MP alone initiate within 0.5–4 h after ingestion and include gastrointestinal symptoms and CNS suppression. After a latent period of 6–24 h, depending on the absorbed dose, decompensated metabolic acidosis occurs with blurred vision and early or late blindness. Blurred vision with normal consciousness is a strong suspicious sign of an MP. The mortality and severity of intoxication are well associated with the severity of CNS depression, hyperglycemia, and metabolic acidosis, but not with serum methanol concentration. After initial resuscitation, the most important therapeutic action for patients with known or suspected MP is correction of acidosis, inhibition of ADH, and hemodialysis. Conclusion Since MP is associated with high morbidity and mortality, it should be considered seriously and instantly managed. Delay in treatment may cause complications, permanent damage, and even death. We attempt to review clinical manifestations, laboratory and radiology findings, and treatment approaches in Methanol poisoning (MP). The most important therapeutic action for patients with known MP is correction of acidosis, inhibition of alcohol dehydrogenase, and hemodialysis. The review emphasizes that MP has a high morbidity and mortality rate and it must be taken seriously and treated immediatly.
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Chen CH, Chen CY, Yu MC, Fu JF, Hou YC, Wang IK, Chih YH, Weng CH, Huang WH, Hsu CW, Tam FWK, Yen TH. Impact of kidney size on mortality in diabetic patients receiving peritoneal dialysis. Sci Rep 2021; 11:8203. [PMID: 33859292 DOI: 10.1038/s41598-021-87684-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 03/23/2021] [Indexed: 11/21/2022] Open
Abstract
Although patients with diabetes mellitus mostly present with enlarged or normal-sized kidneys throughout their life, a small proportion of patients have small kidneys. This longitudinal study enrolled 83 diabetic patients treated with peritoneal dialysis (PD) between 2015 and 2019. Patients were stratified into two groups, those with enlarged or normal (n = 67) or small (n = 16) kidneys, based on their kidney sizes before dialysis. Patients with small kidney size were not only older (76.63 ± 10.63 vs. 68.03 ± 11.26 years, P = 0.007), suffered longer duration of diabetes mellitus (272.09 ± 305.09 vs. 151.44 ± 85.31 month, P = 0.006) and predominantly female (75.0 vs. 41.8%, P = 0.017), but also had lower serum levels of creatinine (9.63 ± 2.82 vs. 11.74 ± 3.32 mg/dL, P = 0.022) and albumin (3.23 ± 0.67 vs. 3.60 ± 0.47 g/dL, P = 0.010) than patients with enlarged or normal kidney size. At the end of analysis, 14 (16.9%) patients died. Patients with small kidney size demonstrated higher all-cause (50.0 vs. 9.0%, P < 0.001) and infection-related (43.8 vs. 7.5%, P < 0.001) mortality than patients with enlarged or normal kidney size. In a multivariate-logistic-regression model, small kidney size was a powerful predictor of mortality (odds ratio 6.452, 95% confidence interval 1.220–34.482, P = 0.028). Diabetic patients with small kidney size at the beginning of PD carry a substantial risk for mortality.
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Thongprayoon C, Petnak T, Kaewput W, Mao MA, Boonpheng B, Bathini T, Vallabhajosyula S, Lertjitbanjong P, Qureshi F, Cheungpasitporn W. Acute kidney injury in hospitalized patients with methanol intoxication: National Inpatient Sample 2003-2014. Hosp Pract (1995) 2021; 49:203-208. [PMID: 33496631 DOI: 10.1080/21548331.2021.1882239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND This study aimed to 1) determine the incidence of acute kidney injury (AKI), 2) identify risk factors for AKI, and 3) evaluate the impact of AKI on in-hospital outcomes in hospitalized patients for methanol intoxication. METHODS We searched the National Inpatient Sample Database for hospitalized patients from 2003 to 2014 with a primary diagnosis of methanol intoxication. We excluded patients with end-stage kidney disease. We identified the AKI using a discharge diagnosis code. We compared clinical characteristics, in-hospital treatment, outcomes, and resource use between AKI and non-AKI patients. RESULTS A total of 603 hospital admissions for methanol intoxication were analyzed. AKI developed in 135 (22.4%) admissions. Anemia (OR 3.43 p < 0.001), hypertension (OR 1.86; p = 0.02), volume depletion (OR 3.46; p = 0.001), sepsis (OR 6.91; p < 0.001), rhabdomyolysis (OR 6.25; p = 0.003), and acute pancreatitis (OR 5.30; p = 0.004) were independent risk factors for AKI development. AKI was significantly associated with increased risk of in-hospital mortality and organ failure. AKI patients needed more mechanical ventilation, and extracorporeal therapy, had longer length of hospital stay, and higher hospitalization costs. CONCLUSION Over one-fifth of methanol intoxication patients developed AKI during hospitalization. AKI was associated with higher morbidity, mortality, and resource utilization.
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Affiliation(s)
- Charat Thongprayoon
- Department of Medicine, Division of Nephrology and Hypertension, Rochester, MN, USA
| | - Tananchai Petnak
- Division of Pulmonary and Critical Care Medicine, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.,Department of Medicine, Division of Pulmonary and Critical Care Medicine, Rochester, MN, USA
| | - Wisit Kaewput
- Department of Military and Community Medicine, Phramongkutklao College of Medicine, Bangkok, Thailand
| | - Michael A Mao
- Department of Medicine, Division of Nephrology and Hypertension, Jacksonville, FL, USA
| | - Boonphiphop Boonpheng
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
| | - Tarun Bathini
- Department of Internal Medicine, University of Arizona, Tucson, AZ, USA
| | - Saraschandra Vallabhajosyula
- Section of Interventional Cardiology, Division of Cardiovascular Medicine, Department of Medicine, Emory University School of Medicine, Atlanta, Georgia, USA
| | - Ploypin Lertjitbanjong
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Tennessee Health Science Center, Memphis, TN, USA
| | - Fawad Qureshi
- Department of Medicine, Division of Nephrology and Hypertension, Rochester, MN, USA
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Wang M, Xie Y, Zhao S, Wang Y, Cui J, Chang S. Association of alcohol consumption with prognosis of ischemic stroke by subtype in different follow-up periods: a hospital-based study in China. Postgrad Med 2020; 133:154-159. [PMID: 33522353 DOI: 10.1080/00325481.2020.1805945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
OBJECTIVES Alcohol consumption is a risk factor for stroke. However, there are no available data on the effect of alcohol consumption on the long-term outcome of ischemic stroke in China. Therefore, this study aimed to explore the association of alcohol consumption with the prognosis of ischemic stroke by subtype in different follow-up periods after stroke. METHODS This 12-month follow-up study recruited 3830 acute ischemic stroke patients from Tianjin, China, between 2016 and 2018. Patients were categorized into two groups according to their consumption of alcohol. Differences in mortality, recurrence, and dependency rates at 3 and 12 months after stroke were compared between both groups. RESULTS The mortality, recurrence, and dependency rates at 12 months after stroke were significantly higher in patients who previously consumed alcohol than in those without previous alcohol consumption (all P < 0.005). A similar trend was observed for mortality rate at 3 months after stroke (P < 0.001). The risk of death at 3 months after an atherothrombotic stroke decreased by 63.4% (relative risk [RR], 0.366; 95% confidence interval [CI], 0.144-0.935) among patients who previously consumed alcohol compared with those who never consumed alcohol. Moreover, for patients with small artery disease classified according to the Trial of ORG 10,172 in Acute Stroke Treatment (TOAST), the recurrence and dependency rates at 12 months after stroke decreased by 49.2% (RR, 0.508; 95% CI, 0.259-0.996) and 49.5% (RR, 0.505; 95% CI, 0.258-0.990), respectively, among patients who consumed alcohol. CONCLUSIONS Previous alcohol consumption decreased the risk of death at 3 months after stroke among patients with atherothrombotic stroke according to the TOAST classification. Furthermore, for patients with small artery disease (according to TOAST classification), alcohol consumption significantly decreased the risk of recurrence and dependency at 12 months after stroke. This study highlights an urgent need to quantify the association of alcohol consumption with outcomes after stroke in China to improve stroke prognosis.
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Affiliation(s)
- Min Wang
- Department of Neurology, Dongying People's Hospital, Dongying, Shandong Province, China
| | - Yuanli Xie
- Department of Neurology, Dongying People's Hospital, Dongying, Shandong Province, China
| | - Suzhen Zhao
- Department of Oncology, Dongying People's Hospital, Dongying, Shandong Province, China
| | - Yucui Wang
- Department of Neurology, Dongying People's Hospital, Dongying, Shandong Province, China
| | - Jingjing Cui
- Department of Neurology, Dongying People's Hospital, Dongying, Shandong Province, China
| | - Shihui Chang
- Department of Neurology, Dongying People's Hospital, Dongying, Shandong Province, China
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Kaewput W, Thongprayoon C, Petnak T, Chewcharat A, Boonpheng B, Bathini T, Vallabhajosyula S, Cheungpasitporn W. Inpatient Burden and Mortality of Methanol Intoxication in the United States. Am J Med Sci 2020; 361:69-74. [PMID: 32958166 DOI: 10.1016/j.amjms.2020.08.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 06/22/2020] [Accepted: 08/08/2020] [Indexed: 01/28/2023]
Abstract
BACKGROUND This study aimed to assess inpatient prevalence, characteristics, outcomes, and resource utilization of hospitalization for methanol intoxication in the United States. MATERIALS AND METHODS A total of 603 hospitalized patients with a primary diagnosis of methanol intoxication from 2003 to 2014 were identified in the National Inpatient Sample database. The inpatient prevalence, clinical characteristics, treatments, outcomes, resource utilization, were investigated. Multivariable logistic regression was performed to identify factors independently associated with in-hospital mortality. RESULTS The overall inpatient prevalence of methanol intoxication among hospitalized patients was 6.4 cases per 1,000,000 admissions in the United States. The mean age was 38±18 (range 0-86) years. 44% used methanol for suicidal attempts. 20% of admissions required mechanical ventilation, and 40% required renal replacement therapy. The three most common complications were metabolic acidosis (44%), hypokalemia (18%), and visual impairment or optic neuritis (8%). The three most common end-organ failures were renal failure (22%), respiratory failure (21%), and neurological failure (17%). 6.5% died in the hospital. Factors associated with increased in-hospital mortality included alcohol drinking, hypernatremia, renal failure, respiratory failure, circulatory failure, and neurological failure. The mean length of hospital stay was 4.0 days. The mean hospitalization cost per patient was $43,222 CONCLUSION: The inpatient prevalence of methanol intoxication in the United States was 6.4 cases per 1,000,000 admissions. The risk of in-hospital mortality mainly depended on the number of end-organ failures.
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Affiliation(s)
- Wisit Kaewput
- Department of Military and Community Medicine, Phramongkutklao College of Medicine, Bangkok, Thailand
| | - Charat Thongprayoon
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, United States.
| | - Tananchai Petnak
- Division of Pulmonary and Critical Care Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Api Chewcharat
- Division of Nephrology and Hypertension, Department of Medicine, Mayo Clinic, Rochester, MN, United States
| | | | - Tarun Bathini
- Department of Internal Medicine, University of Arizona, Tuscon, AZ, United States
| | | | - Wisit Cheungpasitporn
- Division of Nephrology, Department of Internal Medicine, University of Mississippi Medical Center, Jackson, MS, United States
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Kumar M, Kaeley N, Nagasubramanyam V, Bhardwaj BB, Kumar S, Kabi A, Arora P, Dhar M. Single center experience of managing methanol poisoning in the hilly state of Uttarakhand: A cross sectional study. Int J Crit Illn Inj Sci 2019; 9:172-176. [PMID: 31879603 PMCID: PMC6927134 DOI: 10.4103/ijciis.ijciis_49_19] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 09/05/2019] [Accepted: 10/07/2019] [Indexed: 11/04/2022] Open
Abstract
Background In this article, we describe our experience in managing one of the worst tragedies of an outbreak of methanol poisoning in the state of Uttarakhand in February 2019. It was reported that more than 100 people of Uttarakhand and neighboring districts of Uttar Pradesh succumbed to death after consuming this toxic alcohol laced with methanol. Materials and Methods Demographic, clinical, and biochemical data were collected retrospectively from the hospital record section of the tertiary care hospital in the state of Uttarakhand. Results Ninety-three patients of methanol poisoning were attended by the emergency medicine department of our hospital. The mean age of the patients was 38.9 ± 10.3 years. Majority of the patients were males (92/93). The most common clinical symptoms were gastrointestinal (56; 60.2%) followed by neurological (21; 22.6%) and respiratory (18; 19.3%). Most of the patients presented within 12-24 h after consumption of methanol. The mean of latent time of presentation was 4.8 ± 2.6 h. The mean values of pH, bicarbonate levels, lactate, and base deficit were 7.13 ± 0.6, 12.3 ± 6.4, 2.6 ± 0.8, and 15.6 ± 3.8 mmol/l, respectively. Acute kidney injury (26; 27.9%), blurring of vision (9; 9.6%), and sepsis (6, 6.4%) were common complications. Seven patients (7.5%) succumbed to death. Intensive alkali therapy was the main modality of treatment. Ethanol therapy was useful in patients resistant to alkali therapy. Sixteen (17.2%) patients with acute methanol poisoning were dialyzed once. Conclusion Patients with acute methanol poisoning have varied presentations. Gastrointestinal symptoms are the most common presentation. Such outbreaks account for the heavy toll of mortality and morbidity in the society. Prompt diagnosis and a protocol based treatment can have a significant impact on the outcome of these patients. Thus, public health warning should be immediately issued with initial presentation of the casualties.
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Affiliation(s)
- Manish Kumar
- Department of General Medicine, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India
| | - Nidhi Kaeley
- Department of Emergency Medicine, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India
| | - Vempalli Nagasubramanyam
- Department of Emergency Medicine, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India
| | - Bharat Bhushan Bhardwaj
- Department of Emergency Medicine, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India
| | - Subodh Kumar
- Department of Emergency Medicine, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India
| | - Ankita Kabi
- Department of Emergency Medicine, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India
| | - Poonam Arora
- Department of Emergency Medicine, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India
| | - Mridul Dhar
- Department of Emergency Medicine, All India Institute of Medical Sciences, Rishikesh, Uttarakhand, India
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