The Heart Is at Risk: Understanding Stroke-Heart-Brain Interactions with Focus on Neurogenic Stress Cardiomyopathy—A Review / 대한뇌졸중학회지

In recent years, it has been convincingly demonstrated that acute brain injury may cause severe cardiac complications—such as neurogenic stress cardiomyopathy (NSC), a specific form of takotsubo cardiomyopathy. The pathophysiology of these brain-heart interactions is complex and involves sympathetic hyperactivity, activation of the hypothalamic-pituitary-adrenal axis, as well as immune and inflammatory pathways. There have been great strides in our understanding of the axis from the brain to the heart in patients with isolated acute brain injury and more specifically in patients with stroke. On the other hand, in patients with NSC, research has mainly focused on hemodynamic dysfunction due to arrhythmias, regional wall motion abnormality, or left ventricular hypokinesia that leads to impaired cerebral perfusion pressure. Comparatively little is known about the underlying secondary and delayed cerebral complications. The aim of the present review is to describe the stroke-heart-brain axis and highlight the main pathophysiological mechanisms leading to secondary and delayed cerebral injury in patients with concurrent hemorrhagic or ischemic stroke and NSC as well as to identify further areas of research that could potentially improve outcomes in this specific patient population.

Rescue medical activities among sea migrants and refugees in the Mediterranean region: lessons to be learned from the 2014-2020 period.

BACKGROUND: Since 2014, the number of migrants and refugees crossing the Mediterranean towards Europe has risen significantly due to various reasons. Both state agencies and non-governmental organizations (NGOs) have launched rescue missions in the Central Mediterranean in accordance with international legal obligations for search and rescue (SAR) operations for those under distress at sea. Our aim is to summarise the specific qualifications needed for maritime SAR in the Mediterranean both in terms of the population at risk, the equipment and the medical support required, especially during the coronavirus disease 2019 (COVID-19) pandemic and the operational legal framework. MATERIALS AND METHODS: This article aims to summarise the key points of SAR efforts from a medical perspective as depicted in the relevant literature during a specific timeline period (2014-2020) in a specific part of the Mediterranean Sea (Central Mediterranean route). Only papers published in English and whose full text was available were included in this study. The inclusion criteria were: a) articles referring to sea rescue operations between 2014 and 2020, b) research that focused on medical preparedness and assistance during rescue operations in the Central Mediterranean route, c) studies concerning demographic and clinical features of the rescue population, d) guidelines on the rule of conduct of persons and states participating in rescue activities. The exclusion criteria were: a) studies describing SAR operations in different regions of the world and b) studies focusing on routes, demographics and medical support of migrants/refugees on land. RESULTS: Three major themes were identified: a) characteristics of the population in distress at sea: country of origin, age groups, presence of communicable and non-communicable diseases were identified in the relevant literature. Our research shows that dermatological and respiratory issues were the major concerns among sea migrants, coming from different countries of both Africa and Asia, being relatively young and mostly males; b) medical preparedness and equipment needed for rescue: according to current guidelines, revised during the COVID-19 pandemic, infrastructure needed during SAR operations includes both equipment for resuscitation, personal protective equipment, deck adjustments, medical personnel trained to function in an austere setting and able to handle vulnerable patient groups such as children and pregnant women; c) medico-legal implications of SAR operations: knowledge of the legal framework encompassing SAR operations seems necessary, as European Union and state led initiatives seem to withdraw from proactive SAR, while criminalising NGO led rescue efforts. Operating with the imperative to save lives seems to be the only way of respecting international law and human values, thus, a summary of what the law dictates was made in an effort to keep medical workers participating in such operations updated. CONCLUSIONS: Investigation aims to shed light on the special clinical features of sea migrants, the skills, equipment and organizational structure needed by medical workers participating in SAR operations as well as the legal framework under which they will be asked to operate. Special consideration will be given to the difficulties that emerged due to the COVD-19 pandemic.

The Bernese Hypothermia Algorithm: a consensus paper on in-hospital decision-making and treatment of patients in hypothermic cardiac arrest at an alpine level 1 trauma centre.

INTRODUCTION: Guidelines for the treatment of patients in severe hypothermia and mainly in hypothermic cardiac arrest recommend the rewarming using the extracorporeal circulation (ECC). However,guidelines for the further in-hospital diagnostic and therapeutic approach of these patients, who often suffer from additional injuries­especially in avalanche casualties, are lacking. Lack of such algorithms may relevantly delay treatment and put patients at further risk. Together with a multidisciplinary team, the Emergency Department at the University Hospital in Bern, a level I trauma centre, created an algorithm for the in-hospital treatment of patients with hypothermic cardiac arrest. This algorithm primarily focuses on the decision-making process for the administration of ECC. THE BERNESE HYPOTHERMIA ALGORITHM: The major difference between the traditional approach, where all hypothermic patients are primarily admitted to the emergency centre, and our new algorithm is that hypothermic cardiac arrest patients without obvious signs of severe trauma are taken to the operating theatre without delay. Subsequently, the interdisciplinary team decides whether to rewarm the patient using ECC based on a standard clinical trauma assessment, serum potassium levels, core body temperature, sonographic examinations of the abdomen, pleural space, and pericardium, as well as a pelvic X-ray, if needed. During ECC, sonography is repeated and haemodynamic function as well as haemoglobin levels are regularly monitored. Standard radiological investigations according to the local multiple trauma protocol are performed only after ECC. Transfer to the intensive care unit, where mild therapeutic hypothermia is maintained for another 12 h, should not be delayed by additional X-rays for minor injuries. DISCUSSION: The presented algorithm is intended to facilitate in-hospital decision-making and shorten the door-to-reperfusion time for patients with hypothermic cardiac arrest. It was the result of intensive collaboration between different specialties and highlights the importance of high-quality teamwork for rare cases of severe accidental hypothermia. Information derived from the new International Hypothermia Registry will help to answer open questions and further optimize the algorithm.