Comparing Door-To-Balloon Time between ST-Elevation Myocardial Infarction Electrocardiogram and Its Equivalents.

BACKGROUND: In patients with ST-elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary interventions (pPCI), longer door-to-balloon (DTB) time is known to be associated with an unfavorable outcome. A percentage of patients with acute coronary occlusion present with atypical electrocardiographic (ECG) findings, known as STEMI-equivalents. We investigated whether DTB time for STEMI-equivalent patients was delayed. METHODS: This is a retrospective study including patients arriving at an emergency department with the acute coronary syndrome in whom emergent pPCI was performed. ECGs were classified into STEMI and STEMI-equivalent groups. We compared DTB time, with its components, between the groups. We also investigated whether STEMI-equivalent ECG was an independent predictor of DTB time delayed for more than 90 min. RESULTS: A total of 180 patients were included in the present study, and 23 patients (12.8%) presented with STEMI-equivalent ECGs. DTB time was significantly delayed in patients with STEMI-equivalent ECGs (89 (80-122) vs. 81 (70-88) min, p = 0.001). Multivariable logistic regression analysis showed that STEMI-equivalent ECG was an independent predictor of delayed DTB time (odds ratio: 4.692; 95% confidence interval: 1.632-13.490, p = 0.004). CONCLUSIONS: DTB time was significantly delayed in patients presenting with STEMI-equivalent ECGs. Prompt recognition of STEMI-equivalent ECGs by emergency physicians and interventional cardiologists might reduce DTB time and lead to a better clinical outcome.

Development of screening tool for child abuse in the korean emergency department: Using modified Delphi study.

Mandatory reporting rate of suspected child abuse by health care provider is relatively low in South Korea. The purpose of the study was to develop a screening tool for child abuse and evaluate the feasibility of using this screening tool in emergency department (ED) of South Korea. Injured children younger than 14 years old in the ED were enrolled as subjects to use this screening tool. Candidate items for screening tool were decided after reviewing relevant previous studies by researchers. Using the modified Delphi method, it was judged that the consensus for items of screening tool was achieved in 2 rounds, and the final item of the screening tool was decided through the discussion in the final round. The registry including the developed screening tool was applied to 6 EDs over 10 weeks. Variables of the registry were retrospectively analyzed. A child abuse screening tool called Finding Instrument for Non-accidental Deeds (FIND) was developed. It included 8 questions. One item (suspected signs in physical examination) had 100% agreement; 3 items (inconsistency with development, inconsistent history by caregivers, and incompatible injury mechanism) had 86.7% agreement; and 4 items (delayed visit, inappropriate relationship, poor hygiene, and head or long bone injury in young infants) had 80% agreement. During the period of registry enrollment, the rate of screening with FIND was 72.9% (n = 2815). 36 (1.3%) cases had 1 or more "positive" responses among 8 items. Two (0.07%) cases were reported to the Child Protection Agency. An ED based screening tool for child abuse consisting of 8 questions for injured children younger than 14 years old was developed. The use of screening tools in Korean ED is expected to increase the reporting rate of child abuse. However, further study is necessary to investigate the accuracy of this screening tool using a national child abuse registry.

An observational study of surface versus endovascular cooling techniques in cardiac arrest patients: a propensity-matched analysis.

INTRODUCTION: Various methods and devices have been described for cooling after cardiac arrest, but the ideal cooling method remains unclear. The aim of this study was to compare the neurological outcomes, efficacies and adverse events of surface and endovascular cooling techniques in cardiac arrest patients. METHODS: We performed a multicenter, retrospective, registry-based study of adult cardiac arrest patients treated with therapeutic hypothermia presenting to 24 hospitals across South Korea from 2007 to 2012. We included patients who received therapeutic hypothermia using overall surface or endovascular cooling devices and compared the neurological outcomes, efficacies and adverse events of both cooling techniques. To adjust for differences in the baseline characteristics of each cooling method, we performed one-to-one matching by the propensity score. RESULTS: In total, 803 patients were included in the analysis. Of these patients, 559 underwent surface cooling, and the remaining 244 patients underwent endovascular cooling. In the unmatched cohort, a greater number of adverse events occurred in the surface cooling group. Surface cooling was significantly associated with a poor neurological outcome (cerebral performance category 3-5) at hospital discharge (p = 0.01). After propensity score matching, surface cooling was not associated with poor neurological outcome and hospital mortality [odds ratio (OR): 1.26, 95% confidence interval (CI): 0.81-1.96, p = 0.31 and OR: 0.85, 95% CI: 0.55-1.30, p = 0.44, respectively]. Although surface cooling was associated with an increased incidence of adverse events (such as overcooling, rebound hyperthermia, rewarming related hypoglycemia and hypotension) compared with endovascular cooling, these complications were not associated with surface cooling using hydrogel pads. CONCLUSIONS: In the overall matched cohort, no significant difference in neurological outcomes and hospital morality was observed between the surface and endovascular cooling methods.

Serial monitoring of sedation scores in benzodiazepine overdose.

Benzodiazepines are widely used for many diseases, and benzodiazepine overdose is globally increasing in proportion to its prescriptions. Although most benzodiazepine overdoses are known to be safe and nonfatal without coingestions, morbidity or mortality after benzodiazepine overdose is closely related with the duration of unconsciousness or depth of compromised airway. Proper use of flumazenil, a potent antidote of benzodiazepine, seems to accelerate the recovery from the toxicity after benzodiazepine overdose.However, as the case we present demonstrates, careful attention and repetitive evaluations before and after use of flumazenil may be needed in benzodiazepine overdose because resedation occurs in approximately 30% of total flumazenil-treated cases, which suggests that the risk of aspiration or incidental death after administrating flumazenil might be significant without careful monitoring.

Blood alcohol concentration and self-reported alcohol ingestion in acute poisoned patients who visited an emergency department.

BACKGROUND: Many acute poisoned patients have co-ingested alcohol in the emergency department (ED). This study aimed to estimate the blood alcohol concentration (BAC) of acute poisoned patients who visited an ED by age and gender distribution and to determine whether it is possible to obtain self-reports of alcohol ingestion among poisoned patients. METHOD: A retrospective medical chart review was conducted for all patients who visited the ED with acute poisoning between January 2004 and February 2008. Data regarding the patient's age, gender, BAC, self-reported alcohol ingestion, poison ingested, time elapsed since poison exposure, presence of suicide attempts, and self-reported alcohol ingestion were collected. Patients were classified into two groups based on serum alcohol levels (≤10 mg/dl, >10 mg/dl). RESULTS: Of the 255 subjects, 88 subjects (34.5%) were included in the non-alcohol group and 167 subjects (65.5%) were included in the alcohol group. 227 subjects (89.0%) showed suicide intention. Using the 201 subjects who completed the self-report of alcohol ingestion, self-report resulted in 96.6% sensitivity and 86.7% specificity for the assessment of alcohol ingestion. The positive and negative predictive values for self-report were 91.2% and 94.7%, respectively. The median (interquartile range) BAC of the 97 males in the sample was 85.0 (10.0-173.5) mg/dl, and that of the 158 females was 32.0 (4.0-137.5) mg/dl (p = 0.010). The distribution of age in the groups was significantly different between the alcohol and non-alcohol groups (p = 0.035), and there was a significant difference in the mean BAC with respect to age for males (p = 0.003). CONCLUSION: This study showed that over two-thirds of patients presenting with acute poisoning had a BAC > 10 mg/dl. Most of patients visited by suicide attempt. Males had a higher BAC than did females. Self-reported alcohol ingestion in acute poisoned patients showed high sensitivity and specificity.

Combination treatment with 17ß-estradiol and therapeutic hypothermia for transient global cerebral ischemia in rats.

OBJECTIVE: Therapeutic hypothermia is now regarded as the only effective treatment of global ischemic injury after cardiac arrest. Numerous studies of the neuroprotective effects of 17ß-estradiol have yielded conflicting results depending on administration route and dose. Herein, we investigated the neuroprotective effect of postischemic 17ß-estradiol administration combined with therapeutic hypothermia. METHODS: Twenty-one rats were randomly divided into 4 groups: control (group I), therapeutic hypothermia (group II), 17ß-estradiol treatment (group III), and therapeutic hypothermia combined with 17ß-estradiol treatment (group IV). One rat was assigned to a sham operation group. With the exception of the sham-operated rat, all animals underwent transient global cerebral ischemia for 20 minutes by the 4-vessel occlusion method. Hypothermia was maintained at 33°C for 2 hours in groups II and IV, and 17ß-estradiol (10 µg/kg) was intraperitoneally administered to rats in groups III and IV. Neurologic deficit scores and hippocampal cornu ammonis 1 neuronal injury were assessed 72 hours postischemia. RESULTS: The neurologic deficit score was not significantly different among the groups. The percentage of normal neurons in the hippocampal cornu ammonis 1 was 7.32% ± 0.88% in group I, 53.65% ± 2.52% in group II, 51.6% ± 3.44% in group III, and 79.79% ± 1.6% in group IV. The neuroprotective effect in the combined treatment group was markedly greater than in the single treatment groups, which suggests that hypothermia and 17ß-estradiol work synergistically to exert neuroprotection. CONCLUSION: Postischemic administration of low-dose 17ß-estradiol appears to be neuroprotective after transient global ischemia, and its effect is potentiated by therapeutic hypothermia.

Current practices for paediatric procedural sedation and analgesia in emergency departments: results of a nationwide survey in Korea.

OBJECTIVE: Procedural sedation and analgesia (PSA) in children has become a standard tool in emergency settings, but no national PSA guidelines have been developed for the emergency department (ED) in Korea. Therefore, we investigated the practice of PSA and the level of adherence to institutional PSA guidelines in EDs of teaching hospitals. METHODS: This study was a cross-sectional, web-based survey. The study subjects were the faculty of EDs from 96 teaching hospitals. The questionnaire was posted on an internet site, and the participants were requested that the questionnaire be answered by email and telephone in May 2009. RESULTS: The questionnaires were completed by 67.7% of the participants. Only 20% of EDs had institutional PSA guidelines, 21.5% of those had discharge criteria and 13.8% of EDs had a discharge instruction form. Residents were administered PSA at 76.9% of EDs. The airway rescue equipment was near the area where PSA was performed in 76.9% of EDs. The most commonly used medication for both diagnostic imaging and painful procedure was oral chloral hydrate (87.7%, 61.5%). In 64.6% of EDs, patients were monitored. In only 21 cases, EDs (50.0%) monitored the patients to recovery after PSA or discharge. CONCLUSIONS: Current PSA for paediatric patients have not been appropriately applied in Korea. Unified PSA guidelines were rare in the hospitals surveyed, and many patients were not monitored over an appropriate duration, nor did they receive adequate medications for sedation by the best trained personnel. Therefore, the national PSA guidelines must be developed and implemented as early as possible.

Therapeutic hypothermia complicated by spontaneous brain stem hemorrhage.

Hypothermia increases clotting time, which is known as hypothermic coagulopathy. However, prothrombin time and activated partial thromboplastin time prolongation associated with therapeutic hypothermia is usually mild and thus, hypothermic coagulopathy is not considered to cause clinically significant bleeding. On the other hand, PT and aPTT do not seem to reflect the severity of hypothermic coagulopathy. Serious bleeding complications of therapeutic hypothermia has not been reported previously. Herein, we introduce a case of spontaneous brain stem hemorrhage as a complication of therapeutic hypothermia-induced coagulopathy.

Use of cold intravenous fluid to induce hypothermia in a comatose child after cardiac arrest due to a lightning strike.

We report a case in which mild hypothermia was induced successfully using a cold intravenous fluid infusion in a 12-year-old boy who was comatose following 21 min of cardiac arrest caused by a lightning strike.