Characteristics of frequent emergency department users in Korea: a 4-year retrospective analysis using Korea Health Panel Study data

Objective@#We aimed to investigate the characteristics of frequent emergency department (ED) users in Korea. @*Methods@#We analyzed the Korea Health Panel Study data of a sampled population from the 2005 Population Census of Korea data, and adults (age ≥18 years) who visited the ED at least once a year between 2014 and 2017 were included in the study. People who visited three or more times a year were classified as frequent users. We compared demographic, socioeconomic, and health-related factors between nonfrequent and frequent users. We used a multivariable logistic regression analysis to determine factors related to frequent ED visits. We also compared the characteristics of ED use in both nonfrequent and frequent users. @*Results@#A total of 5,090 panels were included, comprising 6,853 visits. Frequent users were 333 (6.5% of all panels), and their ED visits were 1,364 (19.9% of all ED visits). In the multivariable regression analysis, medical aid coverage (adjusted odds ratio [aOR] of the National Health Service coverage, 0.55; 95% confidence interval [CI], 0.40–0.75), unemployment (aOR of employment, 0.72; 95% CI, 0.56–0.91), prior ward admission in a year (aOR, 2.14; 95% CI, 1.67–2.75), and frequent outpatient department use (aOR, 1.72; 95% CI, 1.35–2.20) were associated with frequent use. Moreover, frequent users visited the ED of public hospitals more often than than nonfrequent users (19.2% vs. 9.8%). Medical problems rather than injury/poisoning were the more common reasons for visiting the ED (84.5% vs. 71.2%). @*Conclusion@#We found that frequent ED users were likely to be those with socioeconomic disadvantage or with high demand for medical service. Based on this study, further studies on interventions to reduce frequent ED use are required for better ED services.

Status of functional capacity of the emergency care system in Cambodia: a cross-sectional survey

Objective@#The establishment of a proper emergency care system can significantly decrease the number of deaths and disabilities. However, this is neglected in many low- and middle-income countries, including Cambodia. At present, many Cambodian hospitals lack designated emergency departments, formal triage systems, and staff trained in emergency medicine. This study sought to measure the functional capacity of the Cambodian emergency care system corresponding to each hospital level using the Emergency Care Assessment Tool (ECAT). @*Methods@#We conducted a survey from April 19, 2021, to April 27, 2021, by distributing survey sheets to a total of eight Cambodian medical staff who were invited to a hospital in South Korea for an educational program. The ECAT comprises items evaluating the capability of hospitals to perform signal functions for each of the six emergent sentinel conditions that could occur prior to death. We analyzed the data by categorizing the hospitals into basic, intermediate, and advanced levels. @*Results@#Basic-level hospitals had weaknesses in signal functions related to altered mental status and trauma care. The intermediate-level hospital showed weaknesses in signal functions related to respiratory failure, altered mental status, shock, and trauma care. Advanced-level hospitals had weaknesses in signal functions related to respiratory failure, trauma, and shock. @*Conclusion@#Our survey shows that most Cambodian hospitals lack the capability to perform the emergency signal functions expected at each level. We believe that this gap can be bridged with proper customized education targeting medical staff based on the level of their hospital and ensuring a proper supply of medical devices.

Epidemiology of patients with snake bite or envenomation in emergency department: NEDIS (National Emergency Department Information System)

Purpose@#This study utilizes the NEDIS (National Emergency Department Information System) database to suggest a predictive model for snakebite and envenomation in Korea by analyzing the geographical distribution and seasonal variation of snakebite patients visiting the ER. @*Methods@#This was a retrospective study on snakebite patients visiting the ER using the NEDIS database from January 2014 to December 2019. The subjects include patients with the KCD (Korea Standard Classification of Disease) disease code T63.0 (Toxic effect of contact with snake venom). Geographical location, patient gender, patient age, date of ER visit, treatment during the ER stay, and disposition were recorded to analyze the geographical distribution and seasonal variation of snakebite patients in Korea. @*Results@#A total of 12,521 patients were evaluated in this study (7,170 males, 54.9%; 5,351 females, 40.9%). The average age was 58.5±17.5 years. In all, 7,644 patients were admitted with an average admission time of 5.04±4.7 days, and 2 patients expired while admitted. The geographical distribution was Gyeongsang 3,370 (26.9%), Cheonra 2,692 (21.5%), Chungcheong 2,667 (21.3%), Seoul Capital area 1,999 (16.0%), Kangwon 1,457 (11.6%), and Jeju 336 (2.7%). The seasonal variation showed insignificant incidences in winter and higher severity in spring and summer than in fall: winter 27 (0.2%), spring 2,268 (18.1%), summer 6,847 (54.7%), and fall 3,380 (27.0%). @*Conclusion@#Patients presenting with snakebites and envenomation in the emergency room were most common in the Gyeongsang area and during summer. The simple seasonal model predicted that 436 snakebites and 438 envenomation cases occurred in July and August. The results of this study can be applied to suitably distribute and stock antivenom. Appropriate policies can be formed to care for snakebite patients in Korea.

Trends of carbon monoxide poisoning patients in emergency department: NEDIS (National Emergency Department Information System)

Objective@#We aimed to investigate the epidemiological characteristics and trends of carbon monoxide (CO) poisoning in the National Emergency Department Information System (NEDIS). @*Methods@#Using the NEDIS data from 2014 to 2018, we included patients who had visited the emergency department (ED) with CO poisoning (T58.0 in 7th Korean Standard Classification of Diseases [KCD-7]). We excluded patients with an uncertain time of onset, uncertain intentionality of poisoning, mental state, and unknown clinical outcome. We surveyed age, sex, time of onset, the intentionality of poisoning, mental state, results of emergency treatment, the proportion of admissions to intensive care units (ICU), the outcome of hospitalization, and the regional distribution. We analyzed the rate of incidence and trends of CO poisoning in patients using time series analysis. @*Results@#A total of 18,533 patients, including 10,671 (57.6%) males and 7,862 (42.4%) females, with a mean age of 40.38±18.41 years, were included in this study. Gyeonggi Province (n=6,354, 34.3%) had the highest distribution of patients, followed by Seoul (n=3,357, 18.1%). The incidence of unintentional CO poisoning was more frequent in January and December, and less frequent in August and September. However, the incidence of intentional CO poisoning showed no seasonal variation. The severity, ICU hospitalization rate, and mortality rate for intentional CO poisoning were higher than unintentional CO poisoning (4.1% vs. 0.8%, 29.9% vs. 16.7%, and 2.0% vs. 0.8% respectively) (P<0.001). Applying Winter’s additive method, we could predict that the rate of unintentional CO poisoning would continue to increase and the seasonal fluctuation, such as cases increasing in January-December and decreasing in August-September, would also increase. @*Conclusion@#Intentional CO poisoning showed higher severity than unintentional CO poisoning. In the time series analysis, the rate of unintentional CO poisoning and seasonal fluctuation is predicted to increase.

Analysis of Poisoning Patients Using 2017-18 ED Based Injury in-depth Surveillance Data

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.

Analysis of Poisoning Patients Using 2017-18 ED Based Injury in-depth Surveillance Data

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.

Characteristics of the bicycle driver accident and factors related to the hospital admission: a multi-center retrospective study between 2011 to 2016

OBJECTIVE@#This study aimed to identify the characteristics of bicycle driver accidents, and investigate the factors related to the admission.@*METHODS@#Adult patients (≥20 years old), who visited the emergency department (ED) after a bicycle driver accident registered in the Korean ED-based Injury In-Depth Surveillance (2011–2016) database, were included. The demographic characteristics, accident-related factors, and patients'disposition after the ED treatment were collected. All included cases were categorized into two groups according to the disposition: discharge versus admission. The characteristics of the two groups were compared, and the factors associated with admission were investigated.@*RESULTS@#Among 25,070 ED visits, admissions were required in 5,963 patients (23.8%). The most frequent age group was the twenties (22.0%), and there were more males (74.7%) than females. Accidents occurred most in the summer (34.4%), and non-bicycle roads (73.5%) were the most common places. The most frequently injured body part was the headeck (43.0%), followed by the upper extremities (21.5%). The odds for admission were lower in females than males (odds ratio [OR], 0.87; 95% confidence interval [CI], 0.78–0.96). The odds for admission were higher in the age group over 40 years than in their twenties. Non-bicycle roads had higher odds for admission than bicycle roads (OR, 1.60; 95% CI, 1.40–1.83). Torso (OR, 2.17; 95% CI, 1.92–2.47), upper extremities (OR, 1.20; 95% CI, 1.07–1.35), and lower extremities (OR, 1.48; 95% CI, 1.31–1.66) had higher odds for admission than the headeck.@*CONCLUSION@#Male sex, old age group, accidents on non-bicycle roads, and torso/extremities injuries were associated with the admission in bicycle driver accidents.

Characteristics of Korean Poisoning Patients: Retrospective Analysis by National Emergency Department Information System

PURPOSE@#The study examined the poisoned patients' characteristics nationwide in Korea by using data from the National Emergency Department Information System (NEDIS).@*METHODS@#Among the patients' information sent to NEDIS from January 1, 2013 to December 31, 2015, the included subjects' main diagnosis in ED showed poisoning according to the 7th edition of the Korean Standard Disease Classification (KCD-7). We analyzed the patients' gender, age, initial vital signs, visit time, stay time of staying in ED, results of ED care, main diagnosis in ED, length of hospitalization, and results of hospitalization.@*RESULTS@#A total of 106,779 ED visits were included in the analysis. There were 55,878 males (52.3%), which was more than the number of females. The number of intentional poisoning was 49,805 (59.6%). 75,499 cases (70.8%) were discharged, and 25,858 cases (24.2%) were hospitalized. The numbers of poisoning patients per 1,000 ED visits were 14 in Chungnam and 11.9 in Jeonbuk. The most common cause of poisoning, according to the main diagnosis, was venomous animals. It was the same for hospitalized patients, and pesticide was next. Pesticide was the most common cause of mortality in ED (228 cases, 46.1%) and after hospitalization (584 cases, 54.9%). The incidence of poisoning by age group was frequent for patients in their 30s to 50s, and mortality in ED and post-hospitalization were frequent for patients in their 60s to 80s.@*CONCLUSION@#This study investigated the characteristics of poisoning patients reported in the past 3 years. Pesticide poisoning had a high mortality rate for patients in ED and in-hospital. For mortality, there was a high proportion of elderly people over 60. Thus, policy and medical measures are needed to reduce this problem. Since it is difficult to identify the poison substance in detail due to nature of this study, it is necessary to build a database and monitoring system for monitoring the causative substance and enacting countermeasures.

Use of smart glasses for ultrasound-guided peripheral venous access: a randomized controlled pilot study

OBJECTIVE: Smart glasses can provide sonographers with real-time ultrasound images. In the present study, we aimed to evaluate the utility of smart-glasses for ultrasound-guided peripheral venous access.METHODS: In this randomized, crossover-design, simulation study, 12 participants were recruited from the emergency department residents at a university hospital. Each participant attempted ultrasound-guided peripheral venous access on a pediatric phantom at intervals of 5 days with (glasses group) or without (non-glasses group) the use of smart glasses. In the glasses group, participants confirmed the ultrasound image through the lens of the smart glasses. In the non-glasses group, participants confirmed the ultrasound image through the display viewer located next to the phantom. Procedure time was regarded as the primary outcome, while secondary outcomes included the number of head movements for the participant, number of skin punctures, number of needle redirections, and subjective difficulty.RESULTS: No significant differences in procedural time were observed between the groups (non-glasses group: median time, 15.5 seconds; interquartile range [IQR], 10.3 to 27.3 seconds; glasses group: median time, 19.0 seconds; IQR, 14.3 to 39.3 seconds; P=0.58). The number of head movements was lower in the glasses group than in the non-glasses group (glasses group: median, 0; IQR, 0 to 0; non-glasses group: median, 4; IQR, 3 to 5; P<0.01). No significant differences in the number of skin punctures or needle restrictions were observed between the groups.CONCLUSION: Our results indicate that smart-glasses may aid in ensuring ultrasound-guided peripheral venous access by reducing head movements.

10-Year retrospective study for complaints about medical malpractice in emergency department

OBJECTIVE: Among emergency department patient complaints, complaints related to medical malpractice can often lead to lawsuits. This study examined the reasons for medical malpractice complaints and find ways to improve the medical process and patient satisfaction in an emergency department. METHODS: This study analyzed 269 official complaints of emergency department patients between January 1, 2007, and December 31, 2016. From these complaints, 100 complaints of medical malpractice were analyzed and the complaints of the non-medical process, such as unkindness, cost, facilities and the others, were excluded. The patients' age, sex, relationship between the patient and complainer, insurance state and visiting hour were analyzed. Details of the medical malpractice complaints were assessed and classified into four reasons: diagnosis, examination, treatment, and explanation. This study attempted to analyze the hospital's response to the complaints made during the medical process. RESULTS: Among the 100 medical malpractice complaints, 75 occurred at night duty; 40 were related to treatment, 32 to diagnosis, 22 to examination, and six to explanation. Among the treatment, wound problems were the most frequent reason for 23 cases. The hospital made financial compensation to 16 of its patients. CONCLUSION: The medical malpractice complaints occurred mainly at night. Treatment, especially wound problems, was the most frequent reason for the complaints. The rate of monetary compensation was higher than that of the other studies.

The characteristics of mild head injuries in preschool-age children fall: a retrospective observational study

OBJECTIVE: Falling is a common cause of head injury in preschool aged children. We investigated the characteristics of mild head injuries caused by falling and the association between body weight and occurrence of traumatic brain injuries (TBI). METHODS: This retrospective observational study was conducted on head-injured preschool-aged children that visited the emergency department from January 2012 to December 2015. Characteristics such as age, sex, weight, free fall height, floor type, and presence of TBI, as defined as cerebral hemorrhage or skull fracture, were investigated. We calculated body weight percentiles by calibrating age and weight and categorized them into four quartile ranges. We grouped all included cases into two groups according to the presence of TBI. The characteristics of the two groups were compared by using chi-square test, and the association with TBI was investigated by using binomial logistic regression. RESULTS: A total of 701 children were included, and TBI was observed in 95 children. Children with TBI were younger. The proportion of children with TBI was higher in the third and fourth quartiles of the body weight group as well as according to soft floor and fall from high height (≥1 m). The odds of soft floor being associated with TBI was higher than the odds for hard floor (odds ratio, 2.734; 95% confidence interval [CI], 1.597–4.680). The odds of high height (≥1 m) being associated with TBI was higher than that for low height (odds ratio, 2.306; 95% CI, 1.155–4.601), and the odds ratio for the weight percentile group was 1.228 (95% CI, 1.005–1.499). CONCLUSION: Prevalence of TBI after falling in preschool-aged children might be associated with high fall-height and body weight quartiles.

Factors associated with satisfaction with pediatric emergency department services in Korea: analysis of Korea Health Panel Data 2010 to 2012

OBJECTIVE: We aimed to investigate the factors related to satisfaction with the pediatric emergency department service in Korea. METHODS: This study examined data from the Korea Health Panel Data from 2010 to 2012. Pediatric patients who visited the emergency department at least once between 2010 and 2012 in Korea were included. Data were collected on patient satisfaction with the emergency department service, and factors related to the patient characteristics, emergency department service process, and medical institution. We compared the dissatisfied and satisfied groups, and calculated the odds ratios for satisfaction according to each variable. RESULTS: A total of 1,505 emergency department visits from 947 pediatric patients during the 3-year period were analyzed. We estimated that about 79.5% of patients in the population were satisfied. The odds of expressing satisfaction were higher among males than in females, and among patients who were hospitalized after emergency department treatment compared to those who were transferred to another hospital. Conversely, the odds of expressing satisfaction were lower among patients who had a chronic disease, a financial source other than National Health Insurance, experienced hospitalization within 1 year. CONCLUSION: Our study results might be helpful for establishing a satisfactory pediatric emergency medical service system. In the future, further prospective studies evaluating the causal relationships between the relevant factors and patient satisfaction are warranted.

A Comparison of Sedation with Ketamine-Midazolam versus Ketamine-Propofol for the Lumbar Puncture in Children

PURPOSE: This study was conducted to compare the safety and effectiveness of intravenous ketamine-midazolam (KM) and ketamine-propofol (KP) combination for the lumbar puncture (LP) procedure in children. METHODS: This was a retrospective analysis of patients aged ≤18 years old who received intravenous injection of KM or KP for undergoing LP in the pediatric emergency department. To investigate the effectiveness of KM and KP, we compared the sedation success rate, induction time, procedure time and total sedation time. In addition, adverse events and complications were recorded to assess the safety of the agents. RESULTS: A total 61 patients were enrolled in study. Twenty-eight patients were given KM and 33 patients received KP. All sedations were successful in both groups. While the mean induction time in KM was shorter than in the KP group (3±4 vs. 6±5 minutes, p=0.02), the total sedation time in the KP group was significantly shorter than that in the KM group (33±26 vs. 61±43 minutes, p < 0.01). There were no adverse effects such as hypotension, bradycardia or hypoxic event. CONCLUSION: This study showed that intravenous KM and KP are hemodynamically stable and have few side effects when applied for pediatric sedation during lumbar puncture. Although KM has a shorter induction time than KP, KP has a shorter duration of sedation. Both of these materials can be considered useful agents for sedation when conducting painful procedures in children.

Pharmaceutical Drug Poisoning after Deregulation of Over the Counter Drug Sales: Emergency Department Based In-depth Injury Surveillance

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.

Trends in Korean Pediatric Poisoning Patients: Retrospective Analysis of National Emergency Department Information System

PURPOSE: This study reports the clinical features of infant, child, school aged and adolescent patients treated for acute poisoning in nationwide emergency departments (EDs). METHODS: We retrospectively analyzed clinical data pertaining to patients under 19 years of age who were treated for acute poisoning in nationwide EDs from 2013 to 2015. The data were collected by the National Emergency Department Information System (NEDIS). All patients were divided into three groups: ‘Infant and child group’ (0 to 5 years), ‘school age group’ (6 to 12 years) and ‘adolescent group’ (13 to 18 years). General characteristics, Korea Standard Classification of Disease 7(th) (KCD-7) codes and results of care were collected. RESULTS: There were 14,500 pediatric poisoning cases during the study period. The distribution of patient age was bimodal with two peaks among infant, child and adolescent group. The proportion of alert mentality at the ED visit of the infant and child group was 99.3%, while that of the adolescent group was 86.4%. The proportion of intentional intoxication was higher in the adolescent group (40.7%) than other age groups. Among children less than 13 years of age, various poisonous substances and therapeutic drugs were common. CONCLUSION: There were some clinical differences in acute poisoning patients between age groups. It is necessary to establish a preventive plan considering characteristics by age. Since the KCD-7 code has limitations in analyzing the characteristics of poisoning patients, it is necessary to consider the registration system of poisoning patients.

The Clinical Differences between Urgent Visits and Non-Urgent Visits in Emergency Department During the Neonatal Period

As neonates are brought to the emergency department (ED) for various complaints, it is challenging for emergency physicians to clinically determine the urgency of the visit. We sought to explore clinical characteristics associated with urgent visits to the ED. We conducted a retrospective study by reviewing medical records of neonatal visits to a tertiary pediatric regional emergency center for 5 years. Cases of patients who were discharged after checking only chest or abdominal X-ray or discharged without workup, were classified as non-urgent visits. Cases where more examinations were performed, or when the patient was hospitalized, were classified as urgent visits. Various clinical features and process in the ED were compared between the groups. Of the 1,008 cases enrolled in this study, 856 (84.9%) were urgent and 152 (15.1%) were non-urgent visits. After adjustment by multiple logistic regression analysis, non-urgent visits were associated with self-referrals rather than physician-referrals (odds ratio [OR], 5.96), visits in the evening rather than at night or daytime (OR, 2.51), patient visits from home rather than from medical facilities (OR, 2.19; 95). Fever and jaundice were the most common complaints (25.7% and 24.5%, respectively), and their OR of non-urgent visit was relatively low (adjusted OR 0.03 and 0.03, respectively). However, other common complaints, such as vomiting and cough (7.4% and 7.1%, respectively), were more likely to be non-urgent visits (adjusted OR 2.96 and 9.83, respectively). For suspected non-urgent visits, emergency physicians need to try to reduce unnecessary workup and shorten length of stay in ED.

Playground Equipment Related Injuries in Preschool-Aged Children: Emergency Department-based Injury In-depth Surveillance

In this study, we investigated playground equipment related injuries in preschool-aged children. This was a retrospective observational study using Emergency Department based Injury In-depth Surveillance, (2011–2014). We included the preschool-aged children with playground equipment related injuries. We surveyed the mechanism and incidence of injuries, and estimated the odds ratio (OR) of traumatic brain injury (TBI) and upper/lower extremities fracture. There were 6,110 patients, mean age was 4.14 ± 1.95 years old. Slide and swing related injuries were 2,475 (40.5%) and 1,102 (18.0%). Fall down (48.5%) was the most common mechanism. The OR of TBI in children 0–2 years old was 1.88 times higher than children 3–7 years old, and in swing was 4.72 (OR, 4.72; 95% confidence interval [CI], 2.37–9.40) times higher than seesaw. The OR of upper extremity fracture in children 3–7 years old was 3.07 times higher than children 0–2 years old, and in climbing was 2.03 (OR, 2.03; 95% CI, 1.63–2.52) times higher than swing. The OR of lower extremity fractures in horizontal bars, tightropes, and trampolines was 2.95 (OR, 2.95; 95% CI, 1.55–5.61) times higher than swing. The most common mechanism and playground equipment were fall down and slide. TBI was associated to younger children (0–2 years old) and swing. Fracture of upper extremities was associated to older children (3–7 years old) and climbing. Fracture of lower extremities was associated to others such as horizontal bars, tightropes, and trampolines.

Characteristics and Risk Factors of Fall-down Injuries in Preschool Aged Children

PURPOSE: Falling is one of the most common causes of injury for preschool children. Here, we aim to identify the characteristics and risk factors of injuries by falling-down in preschool children. METHODS: Between January 2010 and December 2011, we enrolled patients under the age of 7 years, who were injured by falling down and visited an urban regional emergency center. We retrospectively surveyed the medical record of these patients, including age, sex, place and height of fall, type of floor, guardian's witness, traumatic brain injury (TBI), and fracture of extremities. RESULTS: The odds ratios sex (male), age (under 2 years old), height of fall, type of floor (hard), and guardian's witness (presence) that resulted in TBI were 1.35 (95% confidence interval [Cl], 0.72?2.55; p=0.352), 3.83 (95% Cl, 1.78?8.65; p<0.05), 6.38 (95% Cl, 3.27–12.44;p<0.05), 3.58 (95% Cl, 0.47–27.30; p=0.218), and 1.47 (95% Cl, 0.63–3.43; p=0.377), respectively. The odds ratios sex (male), age (over 2 years old), height of fall, type of floor (soft), and guardian's witness (absence) that resulted in fractures were 1.19 (95% Cl, 0.78–1.81; p=0.433), 3.10 (95%Cl, 1.99–4.84; p<0.05), 1.98 (95%Cl, 1.19–3.29; p<0.05), 2.41 (95% Cl, 1.29–4.54; p<0.05), and 1.15 (95%Cl, 0.72–1.85, p=0.554), respectively. CONCLUSION: In preschool children who experienced an injury from falling down, TBI was increased with younger patients and higher height of fall, but it was not related with patient's sex, type of floor, and guardian's witness; conversely, fractures were increased with older patients, higher height of fall, and soft floor, but not related with patient's sex and guardian's witness.

Epidemiologic Characteristics of Carbon Monoxide Poisoning: Emergency Department Based Injury In-depth Surveillance of Twenty Hospitals

PURPOSE: This study was conducted to describe the characteristics of patients with carbon monoxide (CO) poisoning. METHODS: We retrospectively surveyed data from the Emergency Department based Injury In-depth Surveillance of 20 hospitals (2011-2014). We included patients whose mechanism of injury was acute CO poisoning caused by inhalation of gases from charcoal or briquettes. We surveyed the annual frequency, gender, age, result of emergency treatment, rate of intensive care unit (ICU) admission, result of admission, association with alcohol, and place of accident. We also surveyed the cause and experience of past suicide attempts by intentional poisoning. RESULTS: A total of 3,405 patients were included (2,015 (59.2%) and 1,390 (40.8%) males and females, respectively) with a mean age of 39.83±18.51 year old. The results revealed that the annual frequency of CO poisoning had increased and the frequency of unintentional CO poisoning was higher than that of intentional CO poisoning in January, February and December. The mean age of intentional CO poisoning was younger than that of unintentional CO poisoning (38.41±13.03 vs 40.95±21.83) (p<0.001). The rates of discharge against medical advice (DAMA), ICU care and alcohol association for intentional CO poisoning were higher than for unintentional CO poisoning (36.4% vs 14.0%, 17.8% vs 4.7%, 45.2% vs 5.6%) (p<0.001). The most common place of CO poisoning was in one's residence. CONCLUSION: The annual frequency of total CO poisoning has increased, and unintentional CO poisoning showed seasonal variation. DAMA, ICU care, and alcohol association of intentional CO poisoning were higher than those of unintentional CO poisoning.

Evaluation of the Optimal Site and Needle Length of Needle Thoracostomy in Chest Trauma Patients

PURPOSE: Tension pneumothorax is a life threatening condition. As an emergency treatment, needle thoracostomy with 50mm angiocatheter at the second intercostal space on the mid-clavicular line (2nd ICS/MCL) is recommended in the current guidelines. However, another site has been suggested in some studies. The purpose of this study was to determine whether the current procedure should be changed, by comparing the chest wall thicknesses (CWT) at the 2(nd) ICS/MCL and the 5(th) ICS/AAL (anterior axillary line) of injured patients. METHODS: A retrospective observational study was performed in an emergency center between May 2009 and December 2011. Medical records and computed tomography (CT) images of 140 included patients were reviewed. CWT at the 2(nd) ICS/MCL was compared with the 5(th) ICS/AAL. Moreover, the relationship between BMI (body mass index) and CWT was evaluated. RESULTS: CWT of the 2(nd) ICS/MCL was 31.7±8.5 mm on the right and 31.6±8.8 mm on the left, with no differences (p=0.42). CWT of the 5(th) ICS/AAL was 28.1±8.5 mm on the right and 27.8±7.7 mm on the left, also with no differences (p=0.30). CWT of the 2(nd) ICS/MCL was thicker than that of the 5(th) ICS/AAL (p<0.001). Nevertheless, CWT of all sites were not thicker than 50 mm (p<0.001). BMI was positively correlated with CWT. CONCLUSION: There was insufficient amount of evidences shown in this study to change the current guidelines of needle thoracostomy. However, in case of obvious patients, a long needle and 5(th) ICS/AAL site should be considered for needle thoracostomy, because CWT tended to increase as BMI increased.