emergency medicine neurology
In this CritCases blog - a collaboration between STARS Air Ambulance Service, Mike Betzner and EM Cases, we take you through a not uncommon stroke presentation which then develops into a challenge with regard to management of elevated ICP, hypertension and the airway...
In this part 2 of EM Cases Journal Jam podcast on Thrombolysis and Endovascular Therapy for Stroke Justin Morgenstern, Rory Spiegel and Anton Helman do a deep dive into the world's literature on endovascular therapy for stroke. While the evidence for endovascular therapy is stronger than that for IV systemic thrombolysis for stroke outcomes at 90 days, a closer look at the literature reveals that a very small minority of patients are eligible for endovascular therapy and we still don't know which patients benefit most from endovascular therapy...
In this two part EM Cases Journal Jam podcast Justin Morgenstern, Rory Spiegel and Anton Helman do a deep dive into the world's literature on systemic thrombolysis for ischemic stroke followed by an analysis of endovascular therapy for stroke. We elucidate the important issues related to p-values, ordinal analysis, fragility index, heterogeneity of studies, stopping trials early and conflicts of interest related to this body of evidence. While "calling a code stroke" is now considered standard for most stroke patients and tPA for stroke is considered a class 1A drug, a close look at the literature tells us that the evidence is not as strong as our stroke protocols suggest...
In anticipation of the upcoming EM Cases main episode on Pediatric Polytrauma Dr. Suzanne Beno, Co-director of the Trauma Program at the Hospital for Sick Children in Toronto, tells her Best Case Ever of a child who suffers a severe traumatic head injury with signs of raised intracranial pressure and cerebral herniation. She discusses the importance of being vigilant when presented with classic patterns of injury, the use of hypertonic saline, crisis resource management and shared decision making with consultants...
In this Part 2, DOACs Bleeding and Reversal we discuss the management of bleeding in patients taking DOACs with minor risk bleeds, like epistaxis where local control is easy to access, moderate risk bleeds, like stable GI bleeds and high risk bleeds, like intracranial hemorrhage. We answer questions such as: How do we weigh the risks and benefits of stopping the DOAC? When is reversal of the DOAC is advised? How best do we accomplish the reversal of DOACs? Is there any good evidence for the newest reversal agent? When should we stop DOACs for different procedures, and when should we delay the procedure?
In anticipation of EM Cases Episode 87 on Alcohol Withdrawal Dr. Sara Gray describes her Best Case Ever of severe alcohol withdrawal and Delirium Tremens from Janus General. Also on this podcast Dr. Anand Swaminathan reacts to Episode 86 Emergency Management of Hyperkalemia and discusses the use of calcium in the setting of digoxin toxicity. Early recognition and treatment of Delirium Tremens - a rapid onset of severe alcohol withdrawal accompanied by delirium and autonomic instability about 3-10 days after the appearance of withdrawal symptoms - is key to preventing long term morbidity and mortality...
Psychiatric chief complaints comprise about 6 or 7% of all ED visits, with the numbers of psychiatric patients we see increasing every year. The ED serves as both the lifeline and the gateway to psychiatric care for millions of patients suffering from acute behavioural or psychiatric emergencies. As ED docs, besides assessing the risk of suicide and homicide, one of the most important jobs we have is to determine whether the patient’s psychiatric or behavioral emergency is the result of an organic disease process, as opposed to a psychological one. There is no standard process for this. With the main objective in mind of picking up and appropriately managing organic disease while improving flow, decreasing cost and maintaining good relationships with our psychiatry colleagues, we have Dr. Howard Ovens, Dr. Brian Steinhart and Dr. Ian Dawe discuss this controversial topic...
Pediatric seizures are common. So common that about 5% of all children will have a seizure by the time they’re 16 years old. If any of you have been parents of a child who suddenly starts seizing, you’ll know intimately how terrifying it can be. While most of the kids who present to the ED with a seizure will end up being diagnosed with a benign simple febrile seizure, some kids will suffer from complex febrile seizures, requiring some more thought, work-up and management, while others will have afebrile seizures which are a whole other kettle of fish. We need to know how to differentiate these entities, how to work-them up and how to manage them in the ED. At the other end of the spectrum of disease there is status epilepticus – a true emergency with a scary mortality rate - where you need to act fast and know your algorithms like the back of your hand. This topic was chosen based on a nation-wide needs assessment study conducted by TREKK (Translating Emergency Knowledge for Kids), a collaborator with EM Cases. With the help of two of Canada’s Pediatric Emergency Medicine seizure experts hand picked by TREKK, Dr. Lawrence Richer and Dr. Angelo Mikrogianakis, we’ll give you the all the tools you need to approach the child who presents to the ED with seizure with the utmost confidence.
Dr. David Carr presents his third of EM Cases' Carr's Cases. This series features potentially debilitating diagnoses that may be thought of as 'zebras', but actually have a higher incidence then we might think - and if diagnosed early, can significantly effect patient outcomes. Dr. Carr tells the story of young woman with an MRSA supra pateller abscess who was put on trimethoprim sulfamethoxazole and presents looking very ill with a severe headache. Not only has trimethoprim sulfamethoxazole been implicated in aseptic meningitis, but NSAIDS, immunomodulators and antibiotics have also been implicated. The reason this is so important for ED practitioners to know, is that case reports of drug-induced aseptic meningitis have shown that symptoms will resolve completely within 24 hours, once the offending drug has been stopped. Not only that, but if the patient receives the drug again in the future, they are at risk for a more severe case of drug induced aseptic meningitis.
Dr. David Carr presents his second of Carr's Cases. This series features some potentially life-threatening diagnoses that may be perceived as zebras, but actually have a higher incidence then we might think - and if diagnosed early, can significantly effect patient outcomes. This Best Case Ever is about Anti-NMDA Receptor Encephalitis, a diagnosis that was only discovered in 2005, and has only recently been recognized by the Emergency Medicine community. Anti-NMDA Receptor Encephalitis may mimic a first presentation of schizophrenia or Neuraleptic Malignant Syndrome. It may present with seizure, altered mental status, autonomic instability or movement disorder in the absence of drug exposure. When you are faced with any of these presentations and no other diagnosis seems to fit, do an LP and send the CSF for anti-NMDA receptor antibodies. The time-sensitive treatment is IVIG and steroids. Anti-NMDA receptor Encephalitis is a must know diagnosis for all emergency medicine practitioners. Learn how to pick up this important diagnosis by listening to Dr. Carr's Best Case Ever and following the links to further resources.