Life-saving fall detection by a smartwatch in a case of ventricular fibrillation.

New smart devices that have the potential to support the health and well-being of their owners have become available. In particular, smart watches are able to identify a fall by the person who is wearing the watch and report it to pre-defined contacts and the local emergency control center. Falls in older people are common and only rarely caused by malignant cardiac arrhythmia. The case of an elderly male whose smart watch automatically reported his fall due to ventricular fibrillation to the local emergency control center is described. Through the intervention of the wearer's device, the activated dispatcher called the patient's wife, who found her husband lying unresponsive on the floor. Emergency medical services responded immediately and were able to successfully resuscitate the patient. A hospital discharge without any long-term complications was achieved.

Ethisch begründet entscheiden in der Intensivmedizin.

The process recommendations of the Ethics Section of the German Interdisciplinary Association for Intensive Care and Emergency Medicine (DIVI) for ethically based decision-making in intensive care medicine are intended to create the framework for a structured procedure for seriously ill patients in intensive care. The processes require appropriate structures, e.g., for effective communication within the treatment team, with patients and relatives, legal representatives, as well as the availability of palliative medical expertise, ethical advisory committees and integrated psychosocial and spiritual care services. If the necessary competences and structures are not available in a facility, they can be consulted externally or by telemedicine if necessary. The present recommendations are based on an expert consensus and are not the result of a systematic review or a meta-analysis.

QRS double counting by ECG software in ST elevation myocardial infarction.

A 62-year-old female patient suffering from ST elevation myocardial infarction (STEMI) was transported to a cardiology facility. During transport, the monitor triggered an alarm for tachycardia despite a normal pulse. The reason was a misinterpretation of the ECG software, which double counted the QRS complex. QRS double counting has been reported in the setting of hyperkalemia only. In this case report, QRS double counting in association with STEMI is documented for the first time. Healthcare workers who are monitoring patients with myocardial infarction should be aware of this misdiagnosis and able to recognize the pattern.

Blood taken immediately after fatal resuscitation attempts yields higher quality DNA for genetic studies as compared to autopsy samples.

BACKGROUND: The out-of-hospital cardiac arrest (OHCA) in the young may be associated with a genetic predisposition which is relevant even for genetic counseling of relatives. The identification of genetic variants depends on the availability of intact genomic DNA. DNA from autopsy may be not available due to low autopsy frequencies or not suitable for high-throughput DNA sequencing (NGS). The emergency medical service (EMS) plays an important role to save biomaterial for subsequent molecular autopsy. It is not known whether the DNA integrity of samples collected by the EMS is better suited for NGS than autopsy specimens. MATERIAL AND METHODS: DNA integrity was analyzed by standardized protocols. Fourteen blood samples collected by the EMS and biomaterials from autopsy were compared. We collected 172 autopsy samples from different tissues and blood with postmortem intervals of 14-168 h. For comparison, DNA integrity derived from blood stored under experimental conditions was checked against autopsy blood after different time intervals. RESULTS: DNA integrity and extraction yield were higher in EMS blood compared to any autopsy tissue. DNA stability in autopsy specimens was highly variable and had unpredictable quality. In contrast, collecting blood samples by the EMS is feasible and delivered comparably the highest DNA integrity. CONCLUSIONS: Isolation yield and DNA integrity from blood samples collected by the EMS is superior in comparison to autopsy specimens. DNA from blood samples collected by the EMS on scene is stable at room temperature or even for days at 4 °C. We conclude that the EMS personnel should always save a blood sample of young fatal OHCA cases died on scene to enable subsequent genetic analysis.

[STEMI mimics : ST elevations on ECG: alternative diagnoses to acute coronary occlusion]. / "STEMI mimics" : ST-Hebungen im EKG: Alternative Diagnosen zum akuten Koronarverschluss.

BACKGROUND: The electrocardiogram (ECG) is an integral part of basic emergency medical diagnosis and preoperative evaluation. In cases of ST elevation myocardial infarction (STEMI) immediate treatment is mandatory after correlation of ischemic symptoms with the ECG pattern. However, there are also ECG patterns that can imitate STEMI, possibly resulting in the true underlying diagnosis being missed and inappropriate therapy being initiated. OBJECTIVES: This paper provides an overview of the most important diagnoses that can imitate STEMI on ECG. MATERIAL AND METHODS: A literature search was carried out to determine the most important differential diagnoses of ST elevation on ECG. These STEMI mimics are discussed in detail and their relevance for emergency medicine is explained. RESULTS: This article provides an overview of differential diagnoses that should be known in emergency medicine when assessing an ECG with ST elevations. CONCLUSION: Good knowledge of the ECG patterns presented here can support decision-making in emergency medicine.

Synthesizing evidence from clinical trials with dynamic interactive argument trees.

BACKGROUND: Evidence-based medicine propagates that medical/clinical decisions are made by taking into account high-quality evidence, most notably in the form of randomized clinical trials. Evidence-based decision-making requires aggregating the evidence available in multiple trials to reach -by means of systematic reviews- a conclusive recommendation on which treatment is best suited for a given patient population. However, it is challenging to produce systematic reviews to keep up with the ever-growing number of published clinical trials. Therefore, new computational approaches are necessary to support the creation of systematic reviews that include the most up-to-date evidence.We propose a method to synthesize the evidence available in clinical trials in an ad-hoc and on-demand manner by automatically arranging such evidence in the form of a hierarchical argument that recommends a therapy as being superior to some other therapy along a number of key dimensions corresponding to the clinical endpoints of interest. The method has also been implemented as a web tool that allows users to explore the effects of excluding different points of evidence, and indicating relative preferences on the endpoints. RESULTS: Through two use cases, our method was shown to be able to generate conclusions similar to the ones of published systematic reviews. To evaluate our method implemented as a web tool, we carried out a survey and usability analysis with medical professionals. The results show that the tool was perceived as being valuable, acknowledging its potential to inform clinical decision-making and to complement the information from existing medical guidelines. CONCLUSIONS: The method presented is a simple but yet effective argumentation-based method that contributes to support the synthesis of clinical trial evidence. A current limitation of the method is that it relies on a manually populated knowledge base. This problem could be alleviated by deploying natural language processing methods to extract the relevant information from publications.

Sonification enables continuous surveillance of the ST segment in the electrocardiogram.

INTRODUCTION: ST segment elevation myocardial infarction is a common reason for out-of-hospital cardiac arrest in adult patients. The surveillance of the ST segment in the electrocardiogram is limited to visual presentation. However, the ST segment can change during the course of treatment. If ST elevation is present immediate coronary revascularization is needed, therefore detecting ST elevation changes the treatment fundamentally. Sonification of the ST segment is a new method which enables the emergency team to detect intermediate changes of the ST segment. MATERIAL AND METHODS: We have chosen two sonification designs which were introduced to two groups, medical students and computer science students. Twenty-one participants took part in the study. The sonification was designed for evaluation of the ST segment. The user was supposed to become empowered to distinguish between no, medium-low, medium-high or extreme ST elevation by listening to the sonification. The two groups were asked to evaluate the sounds for possible ST elevation as well as for aesthetics and usability. In a second study twenty-five medical students were taking part in a medical scenario in which sonification was played during a simulated case. The patient was suffering from a myocardial infarction, ST elevation was transient and sonification sounds were changing appropriately. The students were supposed to detect these changes and act accordingly by modifying the treatment. RESULTS: Both groups were able to classify ST segment elevation by listening to the sonification samples. The higher the ST segment, the better was the detection rate overall. In all of the three categories (pleasantness, informativeness and long-term listening) the Water Ambience sonification was rated higher compared to the Polarity sonification. Moreover, in the two groups that took part in the study, we found a significant difference when comparing classification performance using both sonification designs. For the group of medical students as t(20) = 4.31, p = 3.44 × 10-4, p < 0.01 and for the computer science students as t(19) = 3.40, p = 9.39 × 10-6, p < 0.01. In the simulated medical scenario participants indicated that 96% detected the ST elevation. 60% stated that sonification played a role whereas for 32% it did not play a role for the detection of ST elevation. CONCLUSIONS: Sonification has the potential to play an important role as a new supporting tool for the surveillance of the ST segment during the care of patients with suspicion of myocardial infarction. It can be helpful to differentiate between ST segment elevation myocardial infarction and non-ST segment myocardial infarction especially if ST elevation is transient. Furthermore, sonification is viewed as pleasant to listen to and might not contribute to alarm fatigue.

[Dealing with coercion in intensive care medicine : Recommendations from the Ethics Section of the German Interdisciplinary Association for Intensive Care and Emergency Medicine (DIVI) in collaboration with the Ethics Section of the German Society for Internal Intensive Care and Emergency Medicine (DGIIN)]. / Umgang mit Zwang in der Intensivmedizin : Empfehlung der Sektion Ethik der Deutschen Interdisziplinären Vereinigung für Intensiv- und Notfallmedizin (DIVI) unter Mitarbeit der Sektion Ethik der Deutschen Gesellschaft für Internistische Intensivmedizin und Notfallmedizin (DGIIN).

The treatment situation in intensive care is characterised by a specific asymmetry in the relationship between patients and the team: Patients are particularly dependent on their environment and often show impaired consciousness and capacity to consent. This facilitates the use of coercion or enables and/or provokes it. The aim of this recommendation is to show ways to recognise patients with their wishes and needs and to integrate them into treatment concepts in the intensive care unit in order to reduce and avoid coercion whenever possible. The recommendation shows the variety of possible forms of coercion and discusses the moral standards to be considered in the ethical weighing process as well as legal conditions for justifying its use. It becomes obvious that treatment measures which may involve the use of coercion always require a careful and self-critical review of the measures in relation to the indication and the therapeutic goal. The recommendation's intention therefore is not to disapprove the use of coercion by interprofessional teams. Instead, it aims to contribute to a sensitive perception of coercion and to a critical and caring approach to formal and especially informal (indirect) coercion.

[Ad hoc ethical decision-making in clinical acute and emergency medicine : Position paper of the Ethics Section of the German Interdisciplinary Association of Critical Care and Emergency Medicine (DIVI) in collaboration with the Ethics Section of the German Society of Medical Intensive Care and Emergency Medicine (DGIIN)]. / Ethische Ad-hoc-Entscheidungsfindung in der klinischen Akut- und Notfallmedizin : Positionspapier der Sektion Ethik der Deutschen Interdisziplinären Vereinigung für Intensiv- und Notfallmedizin (DIVI) unter Mitarbeit der Sektion Ethik der Deutschen Gesellschaft für Internistische Intensivmedizin und Notfallmedizin (DGIIN).

Decisions with considerable medical and ethical implications are made in emergency departments every day. Despite time pressure and high workloads, they have to be arrived at in an expert manner in all dimensions. For immediate ethical decisions, structuring the decision-making process in the form of standard procedures can be helpful, provided that they are trained and practiced in an interdisciplinary and interprofessional manner. The support for ad hoc ethical decisions presented here recommends an "ethical team time out" for the evaluation of treatment choices, in a framework where the patient's will and medical indication are examined and completed in a structured manner. Further experts (ideally, an ad hoc clinical ethics consultation) should be consulted if the treatment measure is of questionable medical benefit and/or of questionable patient consent.

The emergency medical service has a crucial role to unravel the genetics of sudden cardiac arrest in young, out of hospital resuscitated patients: Interim data from the MAP-IT study.

BACKGROUND: Genetics of sudden cardiac deaths (SCD) remains frequently undetected. Genetic analysis is recommended in undefined selected cases in the 2021 ERC-guideline. The emergency medical service and physicians (EMS) may play a pivotal role for unraveling SCD by saving biomaterial for later molecular autopsy. Since for high-throughput DNA-sequencing (NGS) high quality genomic DNA is needed. We investigated in a prospective proof-of-concept study the role of the EMS for the identification of genetic forms of SCDs in the young. METHODS: We included patients aged 1-50 years with need for cardiopulmonary resuscitation attempts (CPR). Cases with non-natural deaths were excluded. In two German counties with 562,904 residents 39,506 services were analysed. Paired end panel-sequencing was performed, and variants were classified according to guidelines of the American College of Medical Genetics (ACMG). RESULTS: 769 CPR-attempts were recorded (1.95% of all EMS-services; CPR-incidence 68/100,000). In 103 cases CPR were performed in patients < 50y. 58% died on scene, 26% were discharged from hospital. 24 subjects were included for genotyping. Of these 33% died on scene, 37.5% were discharged from hospital. 25% of the genotyped patients were carriers of (likely) pathogenic (ACMG-4/-5) variants. 67% carried variants with unknown significance (ACMG-3). 2 of them had familial history for arrhythmogenic cardiomyopathy or had to be re-classified as ACMG-4 carriers due to whole exome sequencing. CONCLUSION: The EMS contributes especially in fatal OHCA-cases to increase the yield of identified genetic conditions by collecting a blood sample on scene. Thus, the EMS can contribute significantly to primary and secondary prophylaxis in affected families.

Pseudo-Wellens' syndrome and intermittent left bundle branch block in acute cholecystitis.

We present a case of a 54-year-old male patient who was admitted to our Emergency Department (ED) with localized epigastric pain. Inflammation markers, ultrasound, and CT scan were inconsistent with an initial diagnosis of cholecystitis. However, there was additional evidence of cholecystolithiasis. The ECG showed new anterior biphasic T waves typical for a Wellens' type A ECG. Additionally, the patient had an intermittent left bundle branch block (LBBB). The diagnostic challenges in differentiating possible diagnoses will be described, to which in this case, were either acute cholecystitis or acute coronary syndrome (ACS). A laparoscopic study confirmed acute cholecystitis. Coronary angiography showed no pathological processes associated with ACS. ECG abnormalities were initially ongoing, but were no longer detectable during an 8month follow up assessment.

Wellens' syndrome can indicate high-grade LAD stenosis in case of left bundle branch block.

Diagnosing acute myocardial infarction (AMI) in left bundle branch block (LBBB) is challenging. Modified Sgarbossa criteria are known to help detect AMI in LBBB. This is a report about an electrocardiogram (ECG) with Wellens' signs in combination with a pre-existing LBBB. The ECG of a patient with fluctuating chest pain showed very subtle and one day later more obvious Wellens'signs. A left anterior descending artery (LAD) stenosis was diagnosed and successfully treated. Wellens' syndrome can be diagnosed in a case of LBBB and help detect a high-grade LAD stenosis even if modified Sgarbossa criteria are not met.