Journal of The Korean Society of Clinical Toxicology

Review Article

Diagnosis and treatment of serotonin syndrome: Je Sung You, Sung Phil Chung; J Korean Soc Clin Toxicol. 2024;22(2):11-17. Published online December 31, 2024; DOI: https://doi.org/10.22537/jksct.2024.00008

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Abstract PDF: Serotonin syndrome is a drug-induced clinical syndrome caused by increased serotonin activity in the central nervous system. It occurs when starting a serotonergic drug, increasing its dose (including overdoses) or using a serotonergic drug in combination with other drugs. It manifests along a broad spectrum, ranging from mild side effects to life-threatening conditions. This condition should be suspected if patients have altered mental states, autonomic dysfunction, or neuromuscular symptoms such as clonus and tremor after using serotonergic drugs. Although the Hunter criteria have been widely used, new diagnostic criteria have recently been proposed to screen severe serotonin toxicity. It is necessary to differentiate it from neuroleptic malignant syndrome, which is associated with taking antipsychotic drugs that exert dopamine-antagonistic effects. If serotonin syndrome is suspected, the relevant drug should be stopped, and the patient should be treated with benzodiazepines. Severely ill patients with hyperthermia or neuromuscular symptoms require aggressive treatment. Serotonin receptor antagonists such as cyproheptadine or chlorpromazine have been tried as antidotes, but the level of evidence for their therapeutic effectiveness is very low.

Original Articles

Predicting serum acetaminophen concentrations in acute poisoning for safe termination of N-acetylcysteine in a resource-limited environment: Dahae Kim, Kyungman Cha, Byung Hak So; J Korean Soc Clin Toxicol. 2023;21(2):128-134. Published online December 29, 2023; DOI: https://doi.org/10.22537/jksct.2023.00013

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Abstract PDF: Purpose: The Prescott nomogram has been utilized to forecast hepatotoxicity from acute acetaminophen poisoning. In developing countries, emergency medical centers lack the resources to report acetaminophen concentrations; thus, the commencement and cessation of treatment are based on the reported dose. This study investigated risk factors that can predict acetaminophen detection after 15 hours for safe treatment termination.
Methods
Data were collected from an urban emergency medical center from 2010 to 2020. The study included patients ≥14 years of age with acute acetaminophen poisoning within 15 hours. The correlation between risk factors and detection of acetaminophen 15 hours after ingestion was evaluated using logistic regression, and the area under the curve (AUC) was calculated.
Results
In total, 181 patients were included in the primary analysis; the median dose was 150.9 mg/kg and 35 patients (19.3%) had acetaminophen detected 15 hours after ingestion. The dose per weight and the time to visit were significant predictors for acetaminophen detection after 15 hours (odds ratio, 1.020 and 1.030, respectively). The AUCs were 0.628 for a 135 mg/kg cut-off value and 0.658 for a cut-off 450 minutes, and that of the combined model was 0.714 (sensitivity: 45.7%, specificity: 91.8%).
Conclusion
Where acetaminophen concentrations are not reported during treatment following the UK guidelines, it is safe to start N-acetylcysteine immediately for patients who are ≥14 years old, visit within 15 hours after acute poisoning, and report having ingested ≥135 mg/kg. Additional N-acetylcysteine doses should be considered for patients visiting after 8 hours.

The 2022 Annual Report on Toxicology Surveillance and Severe Poisoning Cases at Emergency Departments in Korea: Eun Sun Lee, Su Jin Kim, Gyu Chong Cho, Mi Jin Lee, Byung Hak So, Kyung Su Kim, Juhyun Song, Sung Woo Lee; J Korean Soc Clin Toxicol. 2023;21(1):1-16. Published online June 30, 2023; DOI: https://doi.org/10.22537/jksct.2023.00007

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Abstract PDF Supplementary Material

Purpose: This study investigated the actual incidence of acute poisoning in Korea on a nationwide scale, with the aim of laying the groundwork for future initiatives in prevention, strategic antidote distribution, and the development of effective emergency treatment for acute poisoning.
Methods
The study analyzed data from 3,038 patients who presented to emergency departments with poisoning-related conditions from June 1, 2022 to December 31, 2022 at 10 sites in nine cities across the country. We extracted data on general characteristics of the poisoning cases, including demographic characteristics (age and gender), place of exposure, reason for poisoning, route of exposure, and the substance involved in the poisoning incident. Age-related patterns in reasons for poisoning, medical outcomes, frequent and primary poisoning substances, and deaths were also analyzed.
Results
The population analyzed in our study was predominantly female, with women constituting 54.74% of all cases. Among infants and children, non-intentional poisoning due to general accidents was the most common cause, accounting for 71.43% of cases. Conversely, suicidal poisoning was more prevalent among teenagers and adults over 20. Fifty-two patients died during the study period, with males comprising approximately two-thirds (67.31%) of these fatalities. Pesticides were the most common poisoning substance among those who died, accounting for 55.77% of such cases. Notably, a significant majority of the victims were elderly individuals aged 60 and above.
Conclusion
This study holds substantial significance, since it represents the first comprehensive investigation and analysis of the symptoms, treatment, and causes of death due to poisoning in Korea on a national scale. By substantially expanding the range and types of poisonous substances examined, we were able to more precisely identify the characteristics and clinical patterns of poisoning cases nationwide.

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Development of a Web Application for Simulating Plasma Drug Concentrations in Patients with Zolpidem Intoxication
Hwa Jun Cha, Sungpil Han, Kwan Cheol Pak, Hyungsub Kim
Pharmaceutics.2024; 16(5): 689. CrossRef

Prediction of pathogen positive-culture results in acute poisoning patients with suspected aspiration: Sungha Baek, Sungwook Park; J Korean Soc Clin Toxicol. 2022;20(2):75-81. Published online December 31, 2022; DOI: https://doi.org/10.22537/jksct.2022.20.2.75

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Abstract PDF: Purpose: This study sought to compare the characteristics of patients with pathogen-positive and negative cultures, and to investigate factors predicting pathogen-positive culture results in patients of acute poisoning with suspected aspiration. Methods: Consecutive patients with acute poisoning admitted to an intensive care unit between January 2016 and December 2018 were retrospectively studied. Respiratory specimens were collected from the enrolled patients at the time of the suspected aspiration. We compared the characteristics of patients with pathogen-positive and negative culture results and analyzed the causative pathogens. Results: Among the 526 patients, 325 showed no clinical features that could be attributed to aspiration, and 201 patients had clinical features suggestive of aspiration. Of these, 113 patients had pathogen-positive culture, 61 were negative, and the specimens of 27 patients contained poor-quality sputum. In univariate analysis, patients with a positive culture showed a longer time to culture from ingestion (p=0.01), faster heart rate (p=0.01), and higher partial pressure of arterial oxygen to the fraction of inspired oxygen (PaO2/FiO2) (p=0.02) than patients with negative culture. Multivariate analysis demonstrated that PaO2/FiO2 (adjusted odd ratio, 1.005; 95% confidence interval [CI], 1.002-1.008; p=0.005) was a significant risk factor for pathogen-positive culture. The area under the receiver operating characteristic curve of PaO2/FiO2 was 0.591 (95% CI, 0.510-0.669, p=0.05). Gram-negative pathogens (GNPs) were predominant and at least one GNP was observed in 84 (73.3%) patients among those with pathogen positive culture. Conclusion: We failed to find any clinical factors associated with positive culture results. Antibiotics that cover GNPs could be considered when deciding the initial antibiotic regimen at the time of suspected aspiration.

Cerebellar Hippocampal and Basal Nuclei Transient Edema with Restricted diffusion (CHANTER) syndrome due to antidepressant: Sangun Nah, Han Bit Kim, Sangsoo Han, Sungwoo Choi, Hoon Lim; J Korean Soc Clin Toxicol. 2022;20(1):31-34. Published online June 30, 2022; DOI: https://doi.org/10.22537/jksct.2022.20.1.31

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Abstract PDF: Cerebellar Hippocampal and Basal Nuclei Transient Edema with Restricted diffusion (CHANTER) syndrome is characterized by an altered mental status. The acute MRI lesions show abnormal restricted diffusion imaging bilaterally and symmetrically in the cerebellum, hippocampus, and basal nuclei. This syndrome is an unknown syndrome and is presumed to be mainly an opioidinduced toxidrome. Here, we present a case study wherein we show that it can also be caused by an antidepressant overdose.

Causative Substance and Time of Mortality Presented to Emergency Department Following Acute Poisoning: 2014-2018 National Emergency Department Information System (NEDIS): Hyeonjae Lee, Minhong Choa, Eunah Han, Dong Ryul Ko, Jaiwoog Ko, Taeyoung Kong, Junho Cho, Sung Phil Chung; J Korean Soc Clin Toxicol. 2021;19(2):65-71. Published online December 31, 2021; DOI: https://doi.org/10.22537/jksct.2021.19.2.65

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Abstract PDF

Purpose: The purpose of this study was to investigate the cause of acute fatal poisoning and the time of death by analyzing the National Emergency Department Information System (NEDIS) of South Korea. Methods: The NEDIS data from 2014 to 2018 excluding non-medical visits were used for this study. The patients with acute poisoning were extracted using diagnostic codes. The toxic substances were classified into pharmaceuticals, pesticides, gases, artificial poisonous substances, and natural toxic substances. Patients were classified according to the time of death, place of death, and region. In each case, the most causative substances of poisoning were identified. Results: There were 380,531 patients including poisoning-related diagnoses, of which 4,148 (1.1%) died, and the WHO age-standardized mortality rate was 4.8 per 100,000. Analysis of 2,702 death patients whose primary diagnosis was acute poisoning, the most common cause of poisoning death was pesticides (62%), followed by therapeutic drugs, gas, and artificial toxic substances. Herbicides were the most common pesticides at 64.5%. The proportion of mortality by time, hyperacute (<6 h) 27.9%, acute (6-24 h) 32.6%, subacute (1-7 d) 29.7%, and delayed period (>7 d) were 9.8%. Conclusion: This study suggests that the most common cause of poisoning death was pesticides, and 60% of deaths occurred within 24 hours. The 71% of mortality from pesticides occurred within 6-24 hours, but mortality from gas was mostly within 6 hours. According to the geographic region, the primary cause of poisoning death was varied to pesticides or pharmaceuticals.

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A Novel Method for Medical Predictive Models in Small Data Using Out-of-Distribution Data and Transfer Learning
Inyong Jeong, Yeongmin Kim, Nam-Jun Cho, Hyo-Wook Gil, Hwamin Lee
Mathematics.2024; 12(2): 237. CrossRef
Factors Associated with Mortality in Elderly Patients Admitted to Intensive Care Unit due to Acute Drug Intoxication from Suicide Attempts
Kyung-Eun Kim, Sun-Hee Moon, Chieun Song, Minjeong An
Journal of Korean Critical Care Nursing.2024; 17(2): 1. CrossRef
Implementation of Regenerative Thermal Oxidation Device Based on High-Heating Device for Low-Emission Combustion
Hoon-Min Park, Dal-Hwan Yoon, Joon-Seong Lee, Hyun-Min Jung, Dae-Hee Lee, Dong-Hwan Jeon, Tae-Yeung Lim
Energies.2024; 17(20): 5182. CrossRef
Implementation of an Improved 100 CMM Regenerative Thermal Oxidizer to Reduce VOCs Gas
Hoon-Min Park, Hyun-Min Jung, Dae-Hee Lee, Hei-Na Park, Tae-Young Lim, Jong-Hwa Yoon, Dal-Hwan Yoon
Processes.2024; 12(12): 2814. CrossRef
The 2022 Annual Report on Toxicology Surveillance and Severe Poisoning Cases at Emergency Departments in Korea
Eun Sun Lee, Su Jin Kim, Gyu Chong Cho, Mi Jin Lee, Byung Hak So, Kyung Su Kim, Juhyun Song, Sung Woo Lee
Journal of The Korean Society of Clinical Toxicology.2023; 21(1): 1. CrossRef
Demographic characteristics of patients admitted to the emergency department for intoxication and a time series analysis during the COVID-19 period
Bongmin Son, Nayoon Kang, Eunah Han, Gina Yu, Junho Cho, Jaiwoog Ko, Taeyoung Kong, Sung Phil Chung, Minhong Choa
Journal of The Korean Society of Clinical Toxicology.2023; 21(2): 92. CrossRef
Machine Learning-Based Prediction Models of Acute Respiratory Failure in Patients with Acute Pesticide Poisoning
Yeongmin Kim, Minsu Chae, Namjun Cho, Hyowook Gil, Hwamin Lee
Mathematics.2022; 10(24): 4633. CrossRef

Analysis of Poisoning Patients Using 2017-18 ED Based Injury in-depth Surveillance Data: Jiyoon Koh, Woochan Jeon, Hyunggoo Kang, Yang Weon Kim, Hyun Kim, Bum Jin Oh, Mi Jin Lee, Byeong Jo Chun, Sung Phil Chung, Kyung Hwan Kim; J Korean Soc Clin Toxicol. 2020;18(2):85-93. Published online December 31, 2020; DOI: https://doi.org/10.22537/jksct.2020.18.2.85

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Abstract PDF

Purpose: The annual statistics for poisoning are reported based on the data from poison control centers in many advanced countries. In 2016 a study was conducted to analyze the 2016 Korea Poisoning status. This study was conducted to make a better annual report for poisoning statistics in Korea from a 2017-2018 national representative database. Methods: This study was a retrospective analysis of poisoning patients based on the data from an emergency department (ED) based injury in-depth surveillance project by the Korea Centers for Disease Control and Prevention in 2017-2018. Bite or sting injuries were not included. Results: A total of 17714 patients presented to 23 EDs because of poisoning. Adults above 20 years old age accounted for 84.6% of the population, while the proportion of intentional poisoning was 60.8%. The poisoning substance presented in the ED were therapeutic drugs (51.2%), gas (20.3%), pesticides (16.4%), and artificial substances (11.4%). Overall, 35% of patients were admitted for further treatment. The mortality was 2.4% (422 cases), and the most common fatal substances in order were carbon monoxide, other herbicides, and paraquat. Conclusion: This study showed the 2017-2018 status of poisoning in Korea. The prognosis is different from the cause of poisoning and the initial mental state of the patient. Therefore, appropriate methods for preventing poisoning and therapeutic plans in specific situations are needed.

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응급실 기반 중독 심층 실태조사 1차년도 결과 보고
성우 이, 수진 김, 규종 조, 미진 이, 병학 소, 경수 김, 주현 송
Public Health Weekly Report.2024; 17(14): 535. CrossRef
Factors influencing repeated suicide attempts among suicide attempters who visited the emergency room due to acute drug intoxication: a retrospective study
In Ah Yun, Mi Yang Jeon
Journal of Korean Biological Nursing Science.2024; 26(3): 228. CrossRef
Status and trends of medical expenditures for poisoning patients
Eung Nam Kim, Soyoung Jeon, Hye Sun Lee, Sung Phil Chung
Journal of The Korean Society of Clinical Toxicology.2023; 21(1): 24. CrossRef
The 2022 Annual Report on Toxicology Surveillance and Severe Poisoning Cases at Emergency Departments in Korea
Eun Sun Lee, Su Jin Kim, Gyu Chong Cho, Mi Jin Lee, Byung Hak So, Kyung Su Kim, Juhyun Song, Sung Woo Lee
Journal of The Korean Society of Clinical Toxicology.2023; 21(1): 1. CrossRef
Prioritising Risk Factors for Prescription Drug Overdose among Older Adults in South Korea: A Multi-Method Study
Eun-Hae Lee, Ju-Ok Park, Joon-Pil Cho, Choung-Ah Lee
International Journal of Environmental Research and Public Health.2021; 18(11): 5948. CrossRef

Treatments of Calcium Channel Blocker Overdose: Sung Woo Lee; J Korean Soc Clin Toxicol. 2020;18(1):1-10. Published online June 30, 2020; DOI: https://doi.org/10.22537/jksct.2020.18.1.1

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Abstract PDF: Pharmaceutical agents are the most common causes of poisoning in Korea. Calcium channel blockers (CCBs) are commonly used in Korea for the management of hypertension and other cardiovascular diseases, but are associated with a risk of mortality due to overdose. Due to the frequent fatalities associated with CCB overdose, it is essential that the emergency physician is capable of identifying CCB intoxication, and has the knowledge to manage CCB overdose. This article reviews the existing clinical guidelines, retrospective studies, and systematic reviews on the emergency management of CCB overdose. The following are the varied treatments of CCB overdose currently administered. 1) For asymptomatic patients: observation with enough time and decontamination, if indicated. 2) For symptomatic patients: infusion of calcium salt, high dose insulin therapy, and vasopressor (norepinephrine) or atropine for bradycardia. 3) For patients refractory to the first line therapy or with refractory shock or impending arrest: lipid emulsion therapy and extracorporeal membrane oxygenation. 4) As adjunct therapy: phosphodiesterase inhibitors, glucagon, methylene blue, pacemaker for AV block. Small CCB ingestion is known to be fatal for pediatric patients. Hence, close observation for sufficient time is required.

Zolpidem Detection and Blood Level in Acute Poisoning-suspected Patients in Emergency Departments: Review of 229 Cases: Jaehyung Yu, Hanseok Chang, Sinae Won, Jeonghun Yeom, Arum Lee, Na-Youn Park, Bum Jin Oh; J Korean Soc Clin Toxicol. 2019;17(2):118-125. Published online December 31, 2019; DOI: https://doi.org/10.22537/jksct.2019.17.2.118

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Abstract PDF: Purpose: Non-benzodiazepine hypnotic drugs (including zolpidem) are associated with an increased risk of suicide and suicidal ideation. Considering the wide usage of zolpidem, this drug should be considered a possible etiology for stupor or coma in any patient exposed to this drug. However, there are no reports on zolpidem blood levels in emergency department patients in Korea. We therefore reviewed the analyzed data of a toxicology laboratory at one university affiliated hospital. Methods: The sex, age, chief symptoms, suspiciousness of poisoning, and presumption of poison were analyzed from January 2018 to June 2019. The detection frequency and level of zolpidem in the patient blood were compared to the mental changes presented, which is the main consequence of zolpidem. Results: A total of 229 toxicological analyses, requested to a toxicological laboratory at one university affiliated hospital, were reviewed. Among 229 patients, the mean age was 54.3±20.7 years old with 113 women and 116 men. 8.7% of patients have psychiatric illness and 39.7% were poisoned intentionally. The chief symptoms detected were: mental change 55.0%, gastrointestinal 14.4%, cardiovascular 10.5%, focal neurological 7.4%, respiratory 3.5%, none 8.7%, and unknown 0.4%. A request for detailed reports revealed that causative poisons were specified only in 20.1% cases. Zolpidem was detected in 22.3% cases (51/229), with median blood level 1.26 mg/L (interquartile 0.1, 5.06 mg/L) and urine 0.90 mg/L (interquartile 0.11, 5.6 mg/L). Furthermore, zolpidem was more frequently detected in toxicology analysis of patients where mental change was the primary symptom, as compared to other symptoms (32.5% vs. 9.7%, p<0.01). Conclusion: This study reported the blood level of zolpidem in suspected poisoning patients admitted to the emergency department.

A Case of Cement Hardening Agent Intoxication with Acute Kidney Injury: Young Woo Seo, Tae Chang Jang, Gyun Moo Kim, Seung Hyun Ko; J Korean Soc Clin Toxicol. 2018;16(2):157-160. Published online December 31, 2018; DOI: https://doi.org/10.22537/jksct.2018.16.2.157

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Abstract PDF: Chronic silica nephropathy has been associated with tubulointerstitial disease, immune-mediated multisystem disease, chronic kidney disease, and end-stage renal disease. On the other hand, acute intentional exposure is extremely rare. The authors' experienced a 44-year-old man who took rapid cement hardener (sodium silicate) in a suicide attempt whilst in a drunken state. He visited the emergency department approximately 1 hour after ingestion. Information on the material was obtained after 3 L gastric lavage. The patient complained of a sore throat, epigastric pain, and swollen to blood tinged vomitus. Proton pump inhibitors, hemostats, steroid, and fluids were administered. Nine hours after ingestion, he was administered 200 mL hematochezia. Immediately after, a gas-troenterologist performed an endoscopic procedure that revealed diffuse hyperemic mucosa with a color change and variable sized ulceration in the esophagus, whole stomach, and duodenal $2^{nd}$ portion. Approximately 35 hours later, persistent oligouria and progressive worsening of the renal function parameters (BUN/Cr from 12.2/1.2 to 67.5/6.6 mg/dL) occurred requiring hemodialysis. The patient underwent 8 sessions of hemodialysis for 1 month and the BUN/Cr level increased to 143.2/11.2 mg/dL and decreased to 7.6/1.5 mg/dL. He was discharged safely from the hospital. Follow up endoscopy revealed a severe esophageal stricture and he underwent endoscopic bougie dilatation. Acute cement hardener (sodium silicate) intoxication can cause renal failure and strong caustic mucosal injury. Therefore, it is important to consider early hemodialysis and treatment to prevent gastrointestinal injury and remote esophageal stricture.

Pharmaceutical Drug Poisoning after Deregulation of Over the Counter Drug Sales: Emergency Department Based In-depth Injury Surveillance: Sung Ho Kim, Hyunjong Kim, Ji Sook Lee, Junseok Park, Kyung Hwan Kim, Dong Wun Shin, Hoon Kim, Joon Min Park, Woochan Jeon; J Korean Soc Clin Toxicol. 2018;16(2):141-148. Published online December 31, 2018; DOI: https://doi.org/10.22537/jksct.2018.16.2.141

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Abstract PDF: Purpose: The Korean government approved selected nonprescription drugs (Over-The-Counter drug; OTC drug) to be distributed in convenience stores from 15. Nov. 2012. This study examined the changes in the incidence and the clinical outcome of acute pharmaceutical drug poisoning after the deregulation of OTC drug sales. Methods: This study analyzed the data of Emergency Department based Injury In-depth Injury Surveillance (EDIIS), Korea Centers for Disease Control and Prevention, from 2011 to 2014. The following items were examined: age, gender, intention, alcohol association, pharmaceutical drugs resulting acute poisoning, the clinical outcomes in emergency department, and the admission rate of intensive care unit (ICU). This is a retrospective cross section observational study. Results: A total of 10,162 patients were subject to pharmaceutical drug poisoning. Acute poisoning by acetaminophen and other drugs were 1,015 (10.0%) and 9,147 (90.0%) patients, respectively. After the deregulation of OTC drug sales, acute poisoning by other drugs increased from 4,385 to 4,762 patients but acute poisoning by acetaminophen decreased from 538 to 477 patients (p<0.05). The rate of admission of acetaminophen poisoning increased from 36.1% (194/538) to 46.8% (223/477). The admission rate to the ICU by acetaminophen poisoning increased from 4.6% (25/538) to 11.3% (54/477) after the deregulation of OTC drug sales (p<0.05). Conclusion: Since the deregulation of OTC drugs sales, pharmaceutical drug poisoning has increased but acetaminophen poisoning has decreased. The rate of hospitalization and ICU admission by pharmaceutical drug poisoning with or without acetaminophen has also increased.

Antidotes Stocking and Delivery for Acute Poisoning Patients at 20 Emergency Departments in Korea 2015-2017: Seungmin Lee, Han Deok Youn, Hanseok Chang, Sinae Won, Kyung Hwan Kim, Bum Jin Oh; J Korean Soc Clin Toxicol. 2018;16(2):131-140. Published online December 31, 2018; DOI: https://doi.org/10.22537/jksct.2018.16.2.131

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Abstract PDF: Purpose: The National Emergency Medical Center has been running a project for the storage and delivery of antidotes for acute poisoning patients of the Department of Health and Welfare, Korea. This study analyzed the results of this project over the past two years. Methods: The requests received by the National Emergency Medical Center and the data on the delivery process were analyzed. Results: This study analyzed a total of 121 patients with acute poisoning, who were requested to receive an antidote reserved at 20 key hospitals in 2015-2017, and whose age was $52.3{pm}23.5;years$; old; 54 were women. Intentional poisoning were 58.7%, and the home was the most common place of exposure (66.9%). The toxic substances were chemicals (32.2%), pesticides (27.3%), medicines (24.8%), and snake venom (4.1%). The patient's poison severity score was $2.4{pm}0.7$ (median 3) indicating moderate-to-severe toxicity. Antidote administration was the cases treated in key hospitals 67.8% (82/121), in which transferred patients accounted for 57.3% (47/82). After receiving an antidote request from a hospital other than the key hospitals, the median was 75.5 minutes (range 10 to 242 minutes) until the antidote reached the patient, and an average of 81.5 minutes was required. The results of emergency care were intensive care unit (70.3%), general wards (13.2%), death (10.7%), and discharge from emergency department (5.0%). Conclusion: This study showed that the characteristics of acute poisoning patients treated with an antidote were different from previous reports of poisoned patients in the emergency department, and basic data on the time required for delivery from key hospitals was different.

Unintentional Pharmaceutical Poisoning in the Emergency Department: Hyo Rim Jo, Choung Ah Lee, Ju Ok Park, Bo Na Hwang; J Korean Soc Clin Toxicol. 2018;16(2):116-123. Published online December 31, 2018; DOI: https://doi.org/10.22537/jksct.2018.16.2.116

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Abstract PDF: Purpose: The social environment of easy access to medicines and arbitrary personal decisions leading to overdose aggravate unintentional medicine poisoning. This study aimed to investigate the characteristics of patients who visited emergency departments with unintentional medicine poisoning and reasons for poisoning based on age group. Methods: We retrospectively collected patients who experienced unintentional medicine poisoning based on data from the national injury surveillance system between 2013 and 2016. Subjects were classified into three groups based on age (0-14 years, 15-64 years, and ${geq}65;years$). We identified sex, insurance, time of poisoning, place, alcohol co-ingestion, hospitalization, death, and reason for poisoning in each age group. Results: A total of 27,472 patients visited an emergency department with poisoning during the study period; 1,958 patients who experienced unintentional poisoning were enrolled in this study. Respiratory medicine was the most frequent medicine in those younger than 15 years of age, and sedatives and antipsychotic drugs were the most common in patients older than 15 years of age. In total, 35.1% of patients older than 65 years were hospitalized. The most common reasons for poisoning were careless storage of medicine in those younger than 15 years of age and overdose due to arbitrary decisions in those older than 15 years of age. Conclusion: Unintentional medicine poisoning has distinct characteristics based on age group, and strategies to prevent poisoning should be approached differently based on age.

Analysis of Poisoning Patients Using 2016 ED Based Injury in-depth Surveillance Data: Sung Phil Chung, Mi Jin Lee, Hyunggoo Kang, Bum Jin Oh, Hyun Kim, Yang Weon Kim, Byeong Jo Chun, Kyung Hwan Kim; J Korean Soc Clin Toxicol. 2017;15(2):86-93. Published online December 31, 2017; DOI: https://doi.org/10.22537/jksct.2017.15.2.86

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Abstract PDF: Purpose: Some advanced countries have reported annual statistics for poisoning based on data from poison control centers. This study was conducted to propose a baseline format and statistics of poisoning in Korea from a national representative database. Methods: This study was a retrospective analysis of poisoning patients based on data from an emergency department (ED) based injury in-depth surveillance project by the Korea Centers for Disease Control and Prevention in 2016. Bite or sting injuries were not included. Variables related to poisoning were summarized using a similar format as the National Poison Data System in the United States. Results: A total of 7,820 poisoning patients presented to 23 EDs. Adults ${geq}20$ years accounted for 84% of the population, while the proportion of intentional poisoning was 59.4%. The most common poisoning substances were therapeutic drugs (45%), gas (21%), pesticides (15%), and artificial toxic substances (13%). Overall, 34.5% of patients were admitted for further treatment. The mortality was 3.2% (248 cases), and the most common causative substances were carbon monoxide, glyphosate, and paraquat, in order. Conclusion: This study showed the recent status of poisoning in Korea. However, a comprehensive poisoning registry based on poison control centers may be required to provide more accurate national statistics in the future.

Low Plasma Insulin Level Prolonged Hypoglycemia after High dose Insulin Lispro Injection: Jeong Ho Kang, Hyun Soo Park; J Korean Soc Clin Toxicol. 2016;14(2):151-154. Published online December 31, 2016; DOI: https://doi.org/10.22537/jksct.2016.14.2.151

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Abstract PDF: Increased plasma insulin levels are often observed in exogenous insulin overdose patients. However, plasma insulin level may decrease with time. We report a case of low plasma insulin level hypoglycemia after insulin lispro overdose. The patient was a 37-year-old man with no previous medical history who suspected insulin lispro overdose. Upon arrival, his Glasgow coma scale was 3 points and his blood sugar level (BSL) was 24 mg/dl. We found five humalog-quick-pen (insulin lispro) in his bag. There was no elevation of glucose level, despite an initial 50 ml bolus of 50% glucose and 150 cc/hr of 10% dextrose continuous intravenous infusion. He also suffered from generalized tonic-clonic seizure, which was treated with lorazepam and phenytoin. We conducted endotracheal intubation, after which he was admitted to the intensive care unit (ICU). There were recurrent events of hypoglycemia below BSL<50 mg/dl after admission. We repeatedly infused 50 ml 50% glucose 10 times and administered 1 mg of glucagon two times. The plasma insulin level was 0.2 uU/ml on initial blood sampling and 0.2 uU/ml after 5 hours. After 13 hours, his BSL stabilized but his mental status had not recovered. Diffuse brain injury was observed upon magnetic resonance imaging (MRI) and severe diffuse cerebral dysfunction was found on electroencephalography (EEG). Despite 35 days of ICU care, he died from ventilator associated pneumonia.

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