Can bystanders' gender affect the clinical outcome of out-of-hospital cardiac arrest: A prospective, multicentre observational study.

BACKGROUND AND PURPOSE: Out-of-hospital cardiac arrest (OHCA) is one of the most common causes of death in many countries. For OHCA patients to have a good clinical outcome, bystander cardiopulmonary resuscitation (CPR) is extremely significant. It is necessary to study the various characteristics of bystanders to improve bystander CPR quality. We aimed to evaluate the correlation between bystanders' gender and clinical outcomes of patients with OHCA. METHODS: We conducted an observational study by using a prospective, multicenter registry of OHCA resuscitation, provided by the Korean Cardiac Arrest Research Consortium registry from October 2015 to June 2017. The following data were collected: patient's age, patient's gender, witnessed by a layperson, characteristics of the bystanders (age grouped by decade, gender, CPR education, compression method, and perception of automated external defibrillators), arrest place, emergency medical services arrival time, and initial electrocardiogram rhythms. Outcome variables were prehospital return of spontaneous circulation, survival discharge, and cerebral performance category status at discharge. RESULTS: A total of 691 patients were included in the study. There were significant differences in the initial shockable rhythm and previous CPR training between bystander's gender. Characteristics such as age, patient's gender, witnessed by a layperson, bystander's gender, initial shockable rhythm, and arrest place were significantly associated with neurologic outcome at discharge, using univariable analysis. However, in the multivariate logistic model, there was no significant correlation between bystander's gender and neurologic outcome. In the subgroup analysis using the multivariate logistic model with 291 patients without missing values of CPR education and bystander' age, there was a significant difference in neurologic outcome depending on bystander's CPR education status. CONCLUSION: There was no difference in the neurologic outcomes of OHCA patients based on bystanders' gender. However, according to subgroup analysis, there was a difference in the neurologic outcome depending on the status of bystanders' CPR education and females received less CPR education than males. Therefore, more active CPR education is required.

Characteristics of fall-related head injury versus non-head injury in the older adults.

BACKGROUND: This study aimed to examine the characteristics of older adults patients who suffered a head injury after a ground-level fall in comparison to non-head injury patients as well as the factors associated with severity in those with head injury only. METHODS: Patients were classified into two groups, the head injury group and the non-head injury group. The characteristics were compared and factors associated with head injury were evaluated. Factors relating to severe injury in the head injury group were also investigated. RESULTS: The head injury group comprised 42 % of a study subjects. Male sex; fall time of 18:00-23:59; fall location of medical facility, transportation area, and public or commercial facility; fall in an outdoor area; fall during daily activity; alcohol ingestion; fall from stairs; non-slippery floor conditions; concrete flooring; sloped flooring; and presence of obstacles on the floor were risk factors for head injury in the older adults after a ground-level fall. Male sex and age over 70 years; fall time of 00:00-05:59; fall in a residential facility; fall in an indoor area; fall during daily activity; fall from stairs; non-slippery floor conditions; and presence of obstacles on the floor were factors associated with severe injury in the head injury group. CONCLUSIONS: Male sex with advanced age, indoor fall, and the presence of obstacles on the floor were risk factors for severe injury in the head injury group in older adults individuals who suffered a ground-level fall. It is necessary to develop appropriate ground-level fall prevention programs by evaluating the individual and environmental characteristics of older adults patients.

Risk Factors for Intracranial Injury Caused by Falls at Home in Korea Using Data from the Emergency Department-based Injury In-depth Surveillance (2011-2018).

BACKGROUND: Most unintentional injuries that occur at home are preventable. However, it may be difficult to sufficiently reduce the number of falls occurring at home by only identifying risk factors focused on specific age groups. Therefore, this study aimed to identify the risk factors (especially age and places where injuries occurred at home) for intracranial injury (ICI) caused by unintentional falls at home. METHODS: Using the Emergency Department (ED)-Based Injury In-depth Surveillance, we analyzed the data of patients who visited the ED due to unintentional falls at home. Risk factors were identified using multivariable logistic regression according to age groups and interactions between place of injury occurrence and age groups, and sex and age groups were assessed. RESULTS: In total, 232,124 patients were included in the analysis; older adults had a higher adjusted odds ratio (aOR) 14.05 (95% confidence interval [CI], 12.74-15.49) of ICI than infants. The corridor was associated with ICI in the male pediatric group (aOR, 2.71; 95% CI, 1.08-6.84) and the balcony with the female pediatric group (aOR, 2.04; 95% CI, 1.03-4.04). In the adult group, aOR of kitchen was 1.38 (95% CI, 1.02-1.88) in females and 0.56 (95% CI, 0.48-0.66) in males. CONCLUSION: In this study, we identified the risk factors of ICI caused by falls at home using ED-based injury surveillance data. The risk of ICI was different among places of occurrence in the home depending on the age groups and sex.

Clinical Guidance for Point-of-Care Ultrasound in the Emergency and Critical Care Areas after Implementing Insurance Coverage in Korea.

Point-of-care ultrasound (POCUS) is a useful tool that is widely used in the emergency and intensive care areas. In Korea, insurance coverage of ultrasound examination has been gradually expanding in accordance with measures to enhance Korean National Insurance Coverage since 2017 to 2021, and which will continue until 2021. Full coverage of health insurance for POCUS in the emergency and critical care areas was implemented in July 2019. The National Health Insurance Act classified POCUS as a single or multiple-targeted ultrasound examination (STU vs. MTU). STU scans are conducted of one organ at a time, while MTU includes scanning of multiple organs simultaneously to determine each clinical situation. POCUS can be performed even if a diagnostic ultrasound examination is conducted, based on the physician's decision. However, the Health Insurance Review and Assessment Service plans to monitor the prescription status of whether the POCUS and diagnostic ultrasound examinations are prescribed simultaneously and repeatedly. Additionally, MTU is allowed only in cases of trauma, cardiac arrest, shock, chest pain, and dyspnea and should be performed by a qualified physician. Although physicians should scan all parts of the chest, heart, and abdomen when they prescribe MTU, they are not required to record all findings in the medical record. Therefore, appropriate prescription, application, and recording of POCUS are needed to enhance the quality of patient care and avoid unnecessary cut of medical budget spending. The present article provides background and clinical guidance for POCUS based on the implementation of full health insurance coverage for POCUS that began in July 2019 in Korea.

Severe Injuries from Low-height Falls in the Elderly Population.

BACKGROUND: Falls from low-height can cause severe injuries in the elderly population. This study was conducted to determine characteristics of injuries from low-height falls. METHODS: We retrospectively review surveillance data on injured patients who presented to six emergency departments from January 2011 to December 2015. Study subjects were divided into severe group and non-severe group based on severity of injury. The general and clinical characteristics were compared between the two groups and analyzed factors related with severe injuries. RESULTS: Of 1,190 elderly patients, severe group comprised 82 patients (7%). The severe group was 2 years younger than the non-severe group. In the severe group, 61% was men and 34% in the non-severe group. In the non-severe, the injuries more commonly occurred at residential facilities and indoors than those in the severe group. Paid work during injury occurrence was 15%, and the more patients presented with non-alert consciousness in the severe group. The most common regions of major injury were head and neck in the severe group. CONCLUSION: Paid work, non-alert consciousness, and major injury to head and neck are relating factors to severe injuries in the elderly population.

Two-Thumb Encircling Technique Over the Head of Patients in the Setting of Lone Rescuer Infant CPR Occurred During Ambulance Transfer: A Crossover Simulation Study.

OBJECTIVE: The purpose of this study was to determine if the over-the-head 2-thumb encircling technique (OTTT) provides better overall quality of cardiopulmonary resuscitation compared with conventional 2-finger technique (TFT) for a lone rescuer in the setting of infant cardiac arrest in ambulance. METHODS: Fifty medical emergency service students were voluntarily recruited to perform lone rescuer infant cardiopulmonary resuscitation for 2 minutes on a manikin simulating a 3-month-old baby in an ambulance. Participants who performed OTTT sat over the head of manikins to compress the chest using a 2-thumb encircling technique and provide bag-valve mask ventilations, whereas those who performed TFT sat at the side of the manikins to compress using 2-fingers and provide pocket-mask ventilations. RESULTS: Mean hands-off time was not significantly different between OTTT and TFT (7.6 ± 1.1 seconds vs 7.9 ± 1.3 seconds, P = 0.885). Over-the-head 2-thumb encircling technique resulted in greater depth of compression (42.6 ± 1.4 mm vs 41.0 ± 1.4 mm, P < 0.001) and faster rate of compressions (114.4 ± 8.0 per minute vs 112.2 ± 8.2 per minute, P = 0.019) than TFT. Over-the-head 2-thumb encircling technique resulted in a smaller fatigue score than TFT (1.7 ± 1.5 vs 2.5 ± 1.6, P < 0.001). In addition, subjects reported that compression, ventilation, and changing compression to ventilation were easier in OTTT than in TFT. CONCLUSIONS: The use of OTTT may be a suitable alternative to TFT in the setting of cardiac arrest of infants during ambulance transfer.

Adverse events associated with poor neurological outcome during targeted temperature management and advanced critical care after out-of-hospital cardiac arrest.

INTRODUCTION: The aim of this study was to investigate the association of adverse events (AEs) during targeted temperature management (TTM) and other AEs and concomitant treatments during the advanced critical care period with poor neurological outcome at hospital discharge in adult out-of-hospital cardiac arrest (OHCA) patients. METHODS: This was a retrospective study using Korean Hypothermia Network registry data of adult OHCA patients treated with TTM in 24 teaching hospitals throughout South Korea from 2007 to 2012. Demographic characteristics, resuscitation and post-resuscitation variables, AEs, and concomitant treatments during TTM and the advanced critical care were collected. The primary outcome was poor neurological outcome, defined as a cerebral performance category (CPC) score of 3-5 at hospital discharge. The AEs and concomitant treatments were individually entered into the best multivariable predictive model of poor neurological outcome to evaluate the associations between each variable and outcome. RESULTS: A total of 930 patients, including 704 for whom a complete dataset of AEs and covariates was available for multivariable modeling, were included in the analysis; 476 of these patients exhibited poor neurological outcome [CPC 3 = 50 (7.1%), CPC 4 = 214 (30.4%), and CPC 5 = 212 (30.1%)]. Common AEs included hyperglycemia (45.6%), hypokalemia (31.3%), arrhythmia (21.3%) and hypotension (29%) during cooling, and hypotension (21.6%) during rewarming. Bleeding (5%) during TTM was a rare AE. Common AEs during the advanced critical care included pneumonia (39.6%), myoclonus (21.9%), seizures (21.7%) and hypoglycemia within 72 hours (23%). After adjusting for independent predictors of outcome, cooling- and rewarming-related AEs were not significantly associated with poor neurological outcome. However, sepsis, myoclonus, seizure, hypoglycemia within 72 hours and anticonvulsant use during the advanced critical care were associated with poor neurological outcome [adjusted odds ratios (95% confidence intervals) of 3.12 (1.40-6.97), 3.72 (1.93-7.16), 4.02 (2.04-7.91), 2.03 (1.09-3.78), and 1.69 (1.03-2.77), respectively]. Alternatively, neuromuscular blocker use was inversely associated with poor neurological outcome (0.48 [0.28-0.84]). CONCLUSIONS: Cooling- and rewarming-related AEs were not associated with poor neurological outcome at hospital discharge. Sepsis, myoclonus, seizure, hypoglycemia within 72 hours and anticonvulsant use during the advanced critical care period were associated with poor neurological outcome at hospital discharge in our study.

Endotracheal tube-assisted orogastric tube insertion in intubated patients in an ED.

BACKGROUND AND AIMS: Inserting a nasogastric tube (NGT) in intubated patients may be difficult because they cannot follow swallowing instructions, resulting in a high rate of first-attempt failure. We introduce a simple technique for inserting an orogastric tube in an emergency department (ED). METHODS: Fifty-six patients in the ED, who were intubated and required NGT insertion, were randomly allocated to 2 groups. We inserted the NGT using a conventional technique from the nostril (control group) and an endotracheal tube (ET)-assisted technique from the mouth (ET group). The procedures' success rate, insertion duration, and complications were compared between the groups. RESULTS: There was a significantly higher overall success rate in the ET group than the control group (100% vs 64%, P<.001). Endotracheal tube group showed 100% first-attempt success rate, but 50% of the control group failed at first attempt. Mean duration of the first trial was not significantly different between the ET and control groups (58.0±16.9 vs 57.3±29.5 seconds, P=.903), but total time for successful insertion was longer in the control group than the ET group (58.0±16.9 vs 111.7±74.5 seconds, P<.001). There was less NGT kinking and more mucosal bleeding in the ET group than in the control group (0% vs 16%, P=.019; 16% vs 7%, P=.225, respectively). CONCLUSION: Endotracheal tube-assisted orogastric tube insertion technique showed a higher rate of successful insertion and shorter total duration. With this result, ET-assisted orogastric tube insertion would be useful in ED.

Modified carotid sinus massage using an ultrasonography for maximizing vagal tone: a crossover simulation study.

INTRODUCTION: The aim of this study was to ascertain if a modified carotid sinus massage (CSM) using ultrasonography is superior to the conventional CSM for vagal tone generation. METHODS: This was a prospective, crossover, clinical trial including 30 subjects with sinus rhythm. Participants were paired, and they performed 2 types of CSM to each other. To perform the conventional technique, pressure was exerted at the point where the maximal impulse of the carotid pulse was palpated. In the modified technique, participants localized the point of maximal diameter just above the bifurcation of the common carotid artery using ultrasonography and applied pressure to that point. Mean differences between premaneuver and postmaneuver R-R intervals and heart rates were compared. The distance from the midline of the neck (x distance) to the angle of the mandible (y distance) was measured, and the mean distance between the 2 techniques was compared. RESULTS: The baseline mean premaneuver R-R interval and heart rate did not differ significantly between the 2 techniques. The postmaneuver R-R interval and heart rate as well as the mean R-R interval and heart rate differences were significantly greater in the modified CSM. The mean location determined using the modified CSM was located 0.8 cm lateral and 0.8 cm superior to the mean location of the conventional CSM. CONCLUSION: The modified CSM using ultrasonography might be more useful than the conventional CSM in reverting episodes of paroxysmal supraventricular tachycardia and may be a suitable alternative for treating the same in the emergency department.

The importance of victim chest exposure during cardiopulmonary resuscitation: a simulation study.

BACKGROUND: During cardiopulmonary resuscitation (CPR), inaccurate positioning of the rescuer's hand might damage internal organs due to compression around the xiphoid process. OBJECTIVE: This study aimed to determine whether exposing the victim's chest during CPR would help adequate positioning of a rescuer's hand on the chest. METHODS: This simulation study included 187 participants. We gave them four photographs each of exposed chests and unexposed chests. Participants were then asked to mark a cross at the center of the chest (CoC) and at the inter-nipple line (INL), and we measured the width of participants' palms to estimate the range of hand contact with the victim's chest. Finally, we compared the position and distribution of the CoC and INL markings and analyzed whether the hand contact range on the victim's chest involved the xiphoid process. RESULTS: The participants' CoC markings were similar regardless of whether the pictures showed an exposed or unexposed chest (p = 0.638). However, the level of INL marking was significantly lower in pictures of an exposed chest (p < 0.001). When exposing the chest, the distribution of markings was narrower for both CoC (p = 0.001) and INL (p < 0.001). The proportion of CoC markings involving the xiphoid process were lower when the chest was exposed (10.7%) than when was clothed (12.3%) (p < 0.001). Similarly, INL markings involving the xiphoid process followed the same trend in exposed vs. unexposed chest images (0% vs. 1.6%, respectively). CONCLUSIONS: Exposing the chest during CPR can improve the rescuer's ability to recognize the CoC and INL, leading to more intense chest compression and reducing the risk of inaccurate compression.

Over-the-head two-thumb encircling technique as an alternative to the two-finger technique in the in-hospital infant cardiac arrest setting: a randomised crossover simulation study.

OBJECTIVE: To determine if the over-the-head two-thumb encircling technique (OTTT) provides better quality cardiopulmonary resuscitation (CPR) than the conventional two-finger technique (TFT) when performed by a lone rescuer in an in-hospital infant cardiac arrest setting. METHODS: This prospective, randomised crossover design study recruited 50 nurses who voluntarily performed lone rescuer infant CPR for 2 min on a manikin. Participants who performed OTTT stood at the head of the manikin to compress the chest and provide bag-valve mask ventilations, whereas those who performed TFT stood by the side of the manikin to compress the chest and provide pocket-mask ventilations. Mean hands-off time, mean compression depths and rates, proportion of effective compressions and complete recoil, and fatigue score changes were assessed during the test, and a survey on the ease of use of the techniques was conducted after the test. RESULTS: Hands-off time, total ventilation volume and number of ventilations were not significantly different between the two techniques. OTTT resulted in greater depth of compressions (p<0.001), greater proportion of effective compressions (p<0.001), smaller proportion of complete recoil (p=0.001), and smaller fatigue score change (p=0.003) than TFT. In addition, subjects reported that compression, ventilation and changing compression to ventilation were easier using OTTT than TFT. CONCLUSIONS: OTTT performed by a lone rescuer in an in-hospital infant cardiac arrest setting resulted in greater compression depth, with no increase in hands-off time, compared with TFT. OTTT may therefore be a suitable alternative to TFT in the in-hospital infant cardiac arrest setting.

Rescuer-limited cardiopulmonary resuscitation as an alternative to 2-min switched CPR in the setting of inhospital cardiac arrest: a randomised cross-over study.

BACKGROUND: The 2010 American Heart Association Guidelines for Cardiopulmonary Resuscitation (CPR) recommend that chest compression be rotated every 2 min to prevent rescuer fatigue. However, the quality of chest compression using 2-min switched CPR tends to decrease rapidly due to rescuer fatigue. We aimed to compare the effectiveness of use of 2-min switched CPR and rescuer-limited CPR (the person performing compressions is allowed to switch with another rescuer prior to 2 min if feeling fatigued) in the setting of inhospital cardiac arrest. METHODS: Using a randomised cross-over trial design, 90 medical students were grouped into pairs to perform four cycles of 2-min switched CPR and rescuer-limited CPR (495 s per technique). During each trial, the total number of compressions performed, mean depth of compression and proportion of effective compressions performed (compression depth >5 mm) were recorded for identification of significant differences and changes in pulse rate and RR were measured to determine the extent of exhaustion. RESULTS: Compared with 2-min switched CPR, the mean compression was deeper (51 vs 47 mm, p<0.001), total number of compressions greater (476 vs 397, p=0.003) and proportion of effective compressions greater (56% vs 47%, p=0.004) during rescuer-limited CPR. Subgroup analysis by 30-s unit showed more consistent compression quality during rescuer-limited CPR. No significant differences in change in pulse rate and RR were found between the two techniques. CONCLUSIONS: Rescuer-limited CPR yields a greater number of effective compressions and more consistent quality of CPR than 2-min switched CPR. Rescuer-limited CPR might be a suitable alternative for treating inhospital cardiac arrest.

Characteristics of fall-from-height patients: a retrospective comparison of jumpers and fallers using a multi-institutional registry.

OBJECTIVE: Fall from height (FFH) is a major public health problem that can result in severe injury, disability, and death. This study investigated how the characteristics of jumpers and fallers differ. METHODS: This was a retrospective study of FFH patients enrolled in an Emergency Department-based Injury In-depth Surveillance (EDIIS) registry between 2011 and 2018. Depending on whether the injury was intentional, FFH patients who had fallen from a height of at least 1 m were divided into two groups: jumpers and fallers. Patient characteristics, organ damage, and death were compared between the two groups, and factors that significantly affected death were identified using multivariable logistic analysis. RESULTS: Among 39,419 patients, 1,982 (5.0%) were jumpers. Of the jumpers, 977 (49.3%) were male, while 30,643 (81.9%) of fallers were male. The jumper group had the highest number of individuals in their 20s, with the number decreasing as age increased. In contrast, the number of individuals in the faller group rose until reaching their 50s, after which it declined. More thoracoabdominal, spinal, and brain injuries were found in jumpers. The in-hospital mortality of jumpers and fallers was 832 (42.0%) and 1,268 (3.4%), respectively. Intentionality was a predictor of in-hospital mortality, along with sex, age, and fall height, with an odds ratio of 7.895 (95% confidence interval, 6.746-9.240). CONCLUSION: Jumpers and fallers have different epidemiological characteristics, and jumpers experienced a higher degree of injury and mortality than fallers. Differentiated prevention and treatment strategies are needed for jumpers and fallers to reduce mortality in FFH patients.

The interaction effect of bystander cardiopulmonary resuscitation (CPR) and dispatcher CPR on outcomes after out-of-hospital cardiac arrest.

This study aimed to evaluate the effects of bystander cardiopulmonary resuscitation (CPR) and dispatcher-assisted CPR (DA-CPR) on outcomes after out-of-hospital cardiac arrest (OHCA). We conducted a prospective observational study using the Korean Cardiac Arrest Research Consortium registry database and enrolled adults aged > 20 years who sustained OHCA. The study population comprised 13,864 patients from October 1, 2015, to June 30, 2021. All enrolled patients were transported to the emergency room and resuscitated by the emergency medical personnel. Patients with terminal illnesses, pregnancy, "do not resuscitate" cards, and insufficient recorded information were excluded. Good neurologic outcomes were noted in 6.5%, 9.9%, and 9.6% of patients in the "no bystander", "standard bystander", and "compression-only bystander" CPR groups, respectively, and differed significantly (p < 0.001). Survival to discharge differed significantly (p < 0.001) between groups at 10.8%, 13.1%, and 13.2%, respectively. In a multivariable model, the interaction between "compression-only" and DA-CPR showed a positive effect on good neurological outcomes and survival to discharge with an odds ratio of 1.93 (Confidence interval, CI 1.28-2.91, p = 0.002) and 1.74 (CI 1.24-2.44, p = 0.001), respectively. In conclusion, the interaction between compression-only CPR and DA-CPR is significantly associated with good neurological and survival outcomes after OHCA. Education for bystanders and dispatchers should adhere to the current guidelines to improve outcomes among OHCA victims.

Effects of script-based role play in cardiopulmonary resuscitation team training.

BACKGROUND: The purpose of this study is to compare the cardiopulmonary resuscitation (CPR) team dynamics and performance between a conventional simulation training group and a script-based training group. METHODS: This was a prospective randomised controlled trial of educational intervention for CPR team training. Fourteen teams, each consisting of five members, were recruited. The conventional group (C) received training using a didactic lecture and simulation with debriefing, while the script group (S) received training using a resuscitation script. The team activity was evaluated with checklists both before and after 1 week of training. The videotaped simulated resuscitation events were compared in terms of team dynamics and performance aspects. RESULTS: Both groups showed significantly higher leadership scores after training (C: 58.2 ± 9.2 vs. 67.2 ± 9.5, p=0.007; S: 57.9 ± 8.1 vs. 65.4 ± 12.1, p=0.034). However, there were no significant improvements in performance scores in either group after training. There were no differences in the score improvement after training between the two groups in dynamics (C: 9.1 ± 12.6 vs. S: 7.4 ± 13.7, p=0.715), performance (C: 5.5 ± 11.4 vs. S: 4.7 ± 9.6, p=0.838) and total scores (C: 14.6 ± 20.1 vs. S: 12.2 ± 19.5, p=0.726). CONCLUSION: Script-based CPR team training resulted in comparable improvements in team dynamics scores compared with conventional simulation training. Resuscitation scripts may be used as an adjunct for CPR team training.

Effects of mobile messenger counseling on case management success for individuals engaging in self-harm or suicide attempts who were discharged from emergency departments.

OBJECTIVE: Postdischarge case management for self-harm or suicide attempters often fails; therefore, this study aimed to investigate the effects of mobile messenger counseling (MMC) on the postdischarge case management results among this patient group. METHODS: A retrospective analysis was done with data collected from March 2015 to February 2020 that included self-harm or suicide attempters who had visited a Korean emergency department and were discharged. If patients consented, postdischarge case management and MMC were conducted from March 2017. The primary outcome was the rate of successful case management, which reflects the patients either connecting to a local psychiatric healthcare center or undergoing a follow-up at a neuropsychiatric outpatient department at least once following discharge. Using univariate and multivariate logistic regression analyses, we evaluated MMC's effects on these patients' postdischarge case management. RESULTS: Of 913 patients, 604 participated in this study. In terms of successful case management, the MMC group showed a significantly higher rate than the non-MMC one (28.3% vs. 16.1%, P=0.001). A multivariate analysis demonstrated that access to postdischarge MMC (odds ratio, 2.149; 95% confidence interval, 1.357-3.403; P=0.001) and giving consent for case management while in the emergency department were significantly associated with successful case management (odds ratio, 8.917; 95% confidence interval, 5.610-14.173; P<0.001). CONCLUSION: The use of MMC for self-harm or suicide attempters is associated with higher case management success rates by increasing their chances of connecting to a psychiatric healthcare center or a neuropsychiatric outpatient department.

Mismatches Between the Number of Installed Automated External Defibrillators and the Annual Rate of Automated External Defibrillator Use Among Places.

AIM: In South Korea, the law concerning automated external defibrillators (AEDs) states that they should be installed in specific places including apartment complexes. This study was conducted to investigate the current status and effectiveness of installation and usage of AEDs in South Korea. METHODS: Installation and usage of AEDs in South Korea is registered in the National Emergency Medical Center (NEMC) database. Compared were the installed number, usage, and annual rate of AED use according to places of installation. All data were obtained from the NEMC database. RESULTS: After excluding AEDs installed in ambulances or fire engines (n = 2,003), 36,498 AEDs were registered in South Korea from 1998 through 2018. A higher number of AEDs were installed in places required by the law compared with those not required by the law (20,678 [56.7%] vs. 15,820 [43.3%]; P <.001). Among them, 11,318 (31.0%) AEDs were installed in apartment complexes. The overall annual rate of AED use was 0.38% (95% CI, 0.33-0.44). The annual rate of AED use was significantly higher in places not required by the law (0.62% [95% CI, 0.52-0.72] versus 0.21% [95% CI, 0.16-0.25]; P <.001). The annual rate of AED use in apartment complexes was 0.13% (95% CI, 0.08-0.17). CONCLUSION: There were significant mismatches between the number of installed AEDs and the annual rate of AED use among places. To optimize the benefit of AEDs in South Korea, changes in the policy for selecting AED placement are needed.

Elevated procalcitonin levels in patients with acetaminophen intoxication: two case reports: A CARE-compliant article.

RATIONALE: Procalcitonin (PCT) is used as a biomarker for identifying the occurrence of sepsis. Previous studies have reported high levels of PCT with acetaminophen intoxication without evidence of infection. Here, we report two patients with acetaminophen intoxication with high levels of PCT without showing any symptoms of bacterial infection. PATIENT CONCERNS: This case study examined two unrelated patients with acetaminophen intoxication admitted to emergency at different times. The first patient was admitted to the emergency department after ingesting approximately 8000 mg (153.8 mg/kg) of acetaminophen. On admission, C-reactive protein (CRP), glutamic oxaloacetic transaminase (GOT), and glutamic pyruvic transaminase (GPT) were normal. PCT and acetaminophen levels were 31.89 ng/mL and below 0.5 µg/mL, respectively. The second patient was admitted to the emergency department 8 h after ingesting ∼23,600 mg (280.6 mg/kg) of acetaminophen. By the second day of admission, GOT and GPT increased to 2508 and 1473 IU/L, respectively. PCT was 45.66 ng/mL with acetaminophen level at 116.9 µg/mL. Both patients were clear of symptoms associated with bacterial infection. DIAGNOSIS: Acetaminophen intoxication. INTERVENTIONS: N-acetylcysteine was given intravenously to both patients for 20 h per protocol. OUTCOMES: Both patients were discharged without complications. LESSONS: Observations suggests that elevated levels of PCT in patients intoxicated with acetaminophen may be associated with involvement of other organs impacted by cytokine stimuli from sterile inflammation resulting from hepatic damage rather than PCT secretion directly caused by hepatic cell damage.

Can Mobile Videocall Assist Laypersons' Use of Automated External Defibrillators? A Randomized Simulation Study and Qualitative Analysis.

OBJECTIVE: To investigate the feasibility of mobile videocall guidance to facilitate AED use by laypersons. Design, setting, and participants. A total of 90 laypersons were randomized into three groups: the mobile video call-guided, voice call-guided, and non-guided groups. Participants were exposed to simulated cardiac arrest to use an AED, and guided by video calls, voice calls, or were not guided. We recorded the simulation experiments as a videoclip, and other researchers who were blinded to the simulation assessed the performance according to the prespecified checklist after simulations. Outcomes measure and analysis. We compared the performance score and time intervals from AED arrival to defibrillation among the three groups and analyzed the common errors. RESULTS: There was no significant difference among the three groups in terms of baseline characteristics. Performance scores in the checklist for using AED were higher in the mobile video call-guided group, especially in the category of "Power on AED" and "Correctly attaches pads" than in the other groups. However, the time interval to defibrillation was significantly longer in the mobile video call-guided group. CONCLUSIONS: Mobile video call guidance might be an alternative method to facilitate AED use by laypersons. Therefore, further well-designed research is needed to evaluate the feasibility of this approach in OHCA.