High risk and low prevalence diseases: Spontaneous cervical artery dissection.

INTRODUCTION: Spontaneous cervical artery dissection (sCAD) is a serious condition that carries with it a high rate of morbidity and mortality. OBJECTIVE: This review highlights the pearls and pitfalls of sCAD, including presentation, diagnosis, and management in the emergency department (ED) based on current evidence. DISCUSSION: sCAD is a condition affecting the carotid or vertebral arteries and occurs as a result of injury and compromise to the arterial wall layers. The dissection most commonly affects the extracranial vessels but may extend intracranially, resulting in subarachnoid hemorrhage. Patients typically present with symptoms due to compression of local structures, and the presentation depends on the vessel affected. The most common symptom is headache and/or neck pain. Signs and symptoms of ischemia may occur, including transient ischemic attack and stroke. There are a variety of risk factors for sCAD, including underlying connective tissue or vascular disorders, and there may be an inciting event involving minimal trauma to the head or neck. Diagnosis includes imaging, most commonly computed tomography angiography of the head and neck. Ultrasound can diagnose sCAD but should not be used to exclude the condition. Treatment includes specialist consultation (neurology and vascular specialist), consideration of thrombolysis in appropriate patients, symptomatic management, and administration of antithrombotic medications. CONCLUSIONS: An understanding of sCAD can assist emergency clinicians in diagnosing and managing this potentially deadly disease.

GLP-1 agonists: A review for emergency clinicians.

INTRODUCTION: Glucagon-like peptide 1 (GLP-1) based therapies, including GLP-1 agonists, are currently in use for treatment of diabetes and obesity. However, several complications may occur with their use. OBJECTIVE: This narrative review provides a focused evaluation of GLP-1 agonist therapy and associated complications for emergency clinicians. DISCUSSION: GLP-1 agonists potentiate insulin release and reduce gastric emptying and food intake. These agents have demonstrated significant improvements in glucose control in diabetics and weight loss in obese patients. The two most common agents include subcutaneous semaglutide (Ozempic, approved for type 2 diabetes, and Wegovy, approved for weight loss) and liraglutide (Saxenda, approved for weight loss, and Victoza, approved for type 2 diabetes), though an oral formulation of semaglutide is available (Rybelsus). While these drugs are associated with improved long-term outcomes, there are a variety of associated adverse events. The most common include gastrointestinal (GI) adverse events such as nausea, vomiting, diarrhea, and abdominal pain. Pancreatitis and biliary disease may also occur. Hypersensitivity including injection site reactions have been associated with use, with reports of anaphylaxis and other rashes. Renal adverse events are most commonly associated with severe GI losses. Hypoglycemia may occur when these agents are used with sulfonylureas or insulin. There is also an increased risk of diabetic retinopathy. Due to the current shortage and expense of these medications, many patients have attempted to obtain these medications from non-licensed and unregulated agents, which may be associated with increased risk of serious complications. CONCLUSIONS: An understanding of the indications for GLP-1 agonist use and associated adverse events can assist emergency clinicians.

High risk and low prevalence diseases: Acute mastoiditis.

INTRODUCTION: Acute mastoiditis is a serious condition that carries with it a high rate of morbidity and mortality. OBJECTIVE: This review highlights the pearls and pitfalls of mastoiditis, including the presentation, diagnosis, and management in the emergency department (ED) based on current evidence. DISCUSSION: Acute mastoiditis most commonly affects pediatric patients and is a suppurative infection of the mastoid air cells. It is often associated with otitis media, and common bacteria include Streptococcus and Staphylococcus. History and examination may reveal tympanic membrane erythema, pinna protrusion, postauricular erythema, mastoid tenderness with palpation, external canal swelling, otorrhea, fever, and malaise. The disease should be suspected in those who fail treatment for otitis media and those who demonstrate the aforementioned abnormalities on examination and systemic symptoms. Laboratory analysis may reveal evidence of systemic inflammation, but a normal white blood cell count and other inflammatory markers should not be used to exclude the diagnosis. Computed tomography (CT) of the temporal bones with intravenous contrast is the recommended imaging modality if the clinician is unsure of the diagnosis. CT may also demonstrate complications. Treatment includes antibiotics such as ampicillin-sulbactam or ceftriaxone as well as otolaryngology consultation. Complications may include subperiosteal and intracranial abscess, deep neck abscess, facial nerve palsy, meningitis/encephalitis, venous sinus thrombosis, and seizures. CONCLUSIONS: An understanding of acute mastoiditis can assist emergency clinicians in diagnosing and managing this potentially deadly disease.

Interventions associated with survival after prehospital intubation in the deployed combat setting.

INTRODUCTION: Airway compromise is the second leading cause of potentially preventable death on the battlefield. Prehospital airway management is often unavoidable in a kinetic combat environment and expected to increase in future wars where timely evacuation will be unreliable and air superiority not guaranteed. We compared characteristics of survivors to non-survivors among combat casualties undergoing prehospital airway intubation. MATERIALS AND METHODS: We requested all Department of Defense Trauma Registry (DODTR) encounters during 2007-2023 with documentation of any airway intervention or assessment within the first 72-h after injury. We conducted a retrospective cohort study of all casualties with intubation documented in the prehospital setting. We used descriptive and inferential statistical analysis to compare survivors through 7 days post injury versus non-survivors. We constructed 3 multivariable logistic regression models to test for associations between interventions and 7-day survival after adjusting for injury severity score, mechanism of injury, and receipt of sedatives, paralytics, and blood products. RESULTS: There were 1377 of 48,301 patients with documentation of prehospital intubation in a combat setting. Of these, 1028 (75%) survived through 7 days post injury. Higher proportions of survivors received ketamine, paralytic agents, parenteral opioids, and parenteral benzodiazepines; there was no difference in the proportions of survivors versus non-survivors receiving etomidate. The multivariable models consistently demonstrated positive associations between 7-day survival and receipt of non-depolarizing paralytics and opioid analgesics. CONCLUSIONS: We found an association between non-depolarizing paralytic and opioid receipt with 7-day survival among patients undergoing prehospital intubation. The literature would benefit from future multi-center randomized controlled trials to establish optimal pharmacologic strategies for trauma patients undergoing prehospital intubation.

Analgesic Techniques for Managing Orthopedic Injuries: A Review for the Emergency Clinician.

BACKGROUND: Orthopedic injuries are commonly managed in the emergency department (ED) setting. Fractures and dislocations may require reduction for proper management. There are a variety of analgesic and sedative strategies to provide patient comfort during reduction. OBJECTIVE: This narrative review evaluates hematoma block, intra-articular injection, intravenous regional analgesia (IVRA) (also known as the Bier block), and periosteal block for orthopedic analgesia in the ED setting. DISCUSSION: Analgesia is an essential component of management of orthopedic injuries, particularly when reduction is necessary. Options in the ED setting include hematoma blocks, intra-articular injections, IVRA, and periosteal blocks, which provide adequate analgesia without procedural sedation or opioid administration. When used in isolation, these analgesic techniques decrease complications from sedation and the need for other medications, such as opioids, while decreasing ED length of stay. Emergency clinicians can also use these techniques as analgesic adjuncts. However, training in these techniques is recommended prior to routine use, particularly with IVRA. CONCLUSIONS: Knowledge of analgesic techniques for orthopedic procedures can assist clinicians in optimizing patient care.

Transvenous Pacemaker Placement: A Review for Emergency Clinicians.

BACKGROUND: Transvenous pacemaker placement is an integral component of therapy for severe dysrhythmias and a core skill in emergency medicine. OBJECTIVE: This narrative review provides a focused evaluation of transvenous pacemaker placement in the emergency department setting. DISCUSSION: Temporary cardiac pacing can be a life-saving procedure. Indications for pacemaker placement include hemodynamic instability with symptomatic bradycardia secondary to atrioventricular block and sinus node dysfunction; overdrive pacing in unstable tachydysrhythmias, such as torsades de pointes; and failure of transcutaneous pacing. Optimal placement sites include the right internal jugular vein and left subclavian vein. Insertion first includes placement of a central venous catheter. The pacing wire with balloon is then advanced until electromechanical capture is obtained with the pacer in the right ventricle. Ultrasound can be used to guide and confirm lead placement using the subxiphoid or modified subxiphoid approach. The QRS segment will demonstrate ST segment elevation once the pacing wire tip contacts the endocardial wall. If mechanical capture is not achieved with initial placement of the transvenous pacer, the clinician must consider several potential issues and use an approach to evaluating the equipment and correcting any malfunction. Although life-saving in the appropriate patient, complications may occur from central venous access, right heart catheterization, and the pacing wire. CONCLUSIONS: An understanding of transvenous pacemaker placement is essential for emergency clinicians.

Extraglottic device use is rare during emergency airway management: A National Emergency Airway Registry (NEAR) study.

INTRODUCTION: Airway management is a critical component of the management of emergency department (ED) patients. The ED airway literature primarily focuses upon endotracheal intubation; relatively less is known about the ED use of extraglottic devices (EGDs). The goal of this study was to describe the frequency of use, success, and complications for EGDs among ED patients. METHODS: The National Emergency Airway Registry (NEAR) is a prospective, multi-center, observational registry. It captures data on all ED patients at participating sites requiring airway management. Intubating clinicians entered all data into an online system as soon as practical after each encounter. We conducted a secondary analysis of these data for all ED encounters in which EGD placement occurred. We used descriptive statistics to characterize these encounters. RESULTS: Of 19,071 patients undergoing intubation attempts, 56 (0.3%) underwent EGD placement. Of 25 participating sites, 13 reported no cases undergoing EGD placement; the median number of EGDs placed per site was 2 (interquartile range 1-2.5, range 1-31). Twenty-nine (54%) patients had either hypotension or hypoxia prior to the start of airway management. Clinicians reported anticipation of a difficult airway in 55% and at least one difficult airway characteristic in 93% of these patients. Forty-one encounters entailed placement of a laryngeal mask airway (LMA®) Fastrach™, 33 of whom underwent subsequent successful intubation through the EGD and 7 of whom underwent intubation by alternative methods. An additional 10 encounters utilized a standard LMA® device. Providers placed 34 (61%) EGDs during the first intubation attempt. Seventeen EGD patients (30%) experienced peri-procedure adverse events, including 14 (25%) experiencing hypoxemia. None of these patients expired due to failed airways. CONCLUSIONS: EGD use was rare in this multi-center ED registry. EGD occurred predominantly in patients with difficult airway characteristics with favorable airway management outcomes. Clinicians should consider this emergency airway device for patients with a suspected difficult airway.

High risk and low prevalence diseases: Tubo-ovarian abscess.

INTRODUCTION: Tubo-ovarian abscess (TOA) is a rare but serious condition that carries with it a high rate of morbidity and even mortality. OBJECTIVE: This review highlights the pearls and pitfalls of TOA, including diagnosis, initial resuscitation, and management in the emergency department (ED) based on current evidence. DISCUSSION: TOA is associated with pelvic inflammatory disease (PID) as well as intrauterine devices, uterine procedures, multiple sexual partners, diabetes mellitus, and immunocompromised states. While usually arising from a gynecologic infection, TOA can be associated with a gastrointestinal source. History and physical examination are limited, demonstrating predominantly lower abdominal pain, but a minority of patients will present with vaginal symptoms. Half of patients will exhibit systemic illness to include fever, nausea, and vomiting. Laboratory evaluation may reveal elevations in white blood cell count and other inflammatory markers. Transvaginal ultrasound and computed tomography (CT) may be utilized for diagnosis, though CT has higher sensitivity and can differentiate this disease from similarly presenting gastrointestinal pathology. Initial medical management includes antibiotics. Surgical intervention is indicated in those who fail initial medical therapy, which is more likely in those with bilateral abscesses, large abscesses, and older patients. CONCLUSIONS: An understanding of TOA can assist emergency clinicians in diagnosing and managing this potentially deadly disease.

High risk and low prevalence diseases: Adult epiglottitis.

INTRODUCTION: Adult epiglottitis is a serious condition that carries with it a high rate of morbidity and even mortality due to airway occlusion. OBJECTIVE: This review highlights the pearls and pitfalls of epiglottitis in adult patients, including diagnosis, initial resuscitation, and management in the emergency department (ED) based on current evidence. DISCUSSION: Epiglottitis is a life-threatening emergency that occurs more commonly in adults in the current medical era with vaccinations. Children present more commonly with acute respiratory distress and fever, while adults present most commonly with severe dysphagia in a subacute manner. Other symptoms may include drooling, muffled voice, and dyspnea. Streptococcus and Staphylococcus bacteria are the most common etiologies, but others include viral, fungal, caustic, thermal injuries, and autoimmune. Lateral neck radiographs assist in diagnosis, but they may be falsely negative. Visualization of the epiglottis is the key to diagnosis. Airway assessment and management are paramount, which has transitioned from direct laryngoscopy to flexible intubating endoscopy and video laryngoscopy with assistance from anesthesia and/or otolaryngology if available. Along with airway assessment, antibiotics should be administered. Corticosteroids and nebulized epinephrine are controversial but should be considered. Patients should be admitted to the intensive care setting for close airway observation or ventilatory management if intubated. CONCLUSIONS: An understanding of epiglottitis can assist emergency clinicians in diagnosing and managing this potentially deadly disease.

High risk and low prevalence diseases: Ovarian torsion.

INTRODUCTION: Ovarian torsion is a rare, frequently misdiagnosed condition that carries with it a high rate of morbidity. OBJECTIVE: This review highlights the pearls and pitfalls of ovarian torsion, including presentation, evaluation, and management in the emergency department (ED) based on current evidence. DISCUSSION: Ovarian torsion is one of the most common gynecological surgical emergencies and occurs with complete or partial rotation of the ovary along the supporting ligaments, obstructing vascular flow. Several risk factors include the presence of an ovarian mass or cyst. The most common population affected includes reproductive aged women, though cases also occur in premenarchal females, pregnant women, and postmenopausal women. Abdominal or pelvic pain is common but is not always sudden in onset or severe. Nausea and vomiting occur in 70%. Ultrasound can assist with diagnosis, but a normal ultrasound examination cannot exclude the diagnosis. Computed tomography with intravenous contrast can assist with diagnosis. Treatment includes emergent gynecologic consultation for surgical detorsion, along with symptomatic therapy in the ED. CONCLUSIONS: An understanding of ovarian torsion can assist emergency clinicians in diagnosing and managing this disease.

Neurologic toxicity of carbamazepine in treatment of trigeminal neuralgia.

Carbamazepine is a medication used to treat a variety of neurological and psychiatric conditions including seizure disorders, neuropathic pain syndromes, and bipolar disorder. Unfortunately, its pharmacokinetics and side effect profile may lead to significant toxicities due to its sodium channel blockade. In 2019, there were over 1500 cases of isolated carbamazepine toxicity reported to poison centers across the United States. Carbamazepine toxicity may result in vague neurological symptoms in milder cases, but in severe toxicity, it can cause cardiovascular instability, intractable seizures, and coma. In this article, we describe a case of a 40-year-old female who presented to a local emergency department with focal neurological deficits after repeated supratherapeutic dosing of carbamazepine.. This case highlights a key cerebrovascular accident mimic that emergency physicians should consider from acute toxicity that can be seen with carbamazepine in a patient who was taking the medication as prescribed.

Sigmoid volvulus after trauma, an uncommon twist.

Sigmoid volvulus occurs when a portion of sigmoid colon twists around its blood supply at the base of the mesentery, causing ischemia and necrosis. In developed nations, this is most commonly a condition of elderly, bed-bound, chronically constipated individuals. However, this condition may occur after blunt abdominal trauma, especially in individuals with underlying anatomic derangements from the aforementioned conditions. We present a unique case of sigmoid volvulus in a patient with no pre-existing abdominal complaints or surgical history, who sustained blunt traumatic injuries when she was struck by a motor vehicle. Prompt recognition of this deadly condition by emergency clinicians facilitated rapid surgical correction and mitigated further morbidity and mortality.

Mycobacterium marinum cellulitis: A fishy etiology.

Skin and soft tissue infections account for 2% of emergency department visits annually, though more unusual causative bacteria associated with saltwater exposure may result in morbidity. Mycobacterium marinum represents a rare but important cause of cellulitis, which if untreated or improperly managed, can progress to dactylitis or osteomyelitis. This unusual diagnosis is made more challenging due to the prolonged incubation period of approximately 21 days, temporally separating the inoculation from the disease. Patients will present with a nodular rash in a sporotrichoid pattern. While doxycycline is one antibiotic providing saltwater coverage, M. marinum has variable sensitivities to anti-mycobacterial antibiotics, and thus biopsy helps confirm the diagnosis as well as provide sensitivities for treatment. Emergency clinicians should inquire about environmental risk factors when caring for patients with cellulitis, especially with atypical skin presentations, and consider M. marinum as a rare but important cellulitis etiology.

Tattoo Associated Native Valve Infective Endocarditis.

Infective Endocarditis (IE) is an uncommon illness in the emergency department (ED) with significant associated morbidity. Patients with IE typically possess risk factors predisposing them to bacterial invasion. These risk factors include intravenous drug use, valvulopathies, valve replacement, poor oral hygiene, immunocompromised state, and recent invasive procedures. A rarer condition is tattoo-associated IE. Diagnosis of IE includes multiple blood cultures and echocardiography. Therapeutic interventions include prolonged intravenous antibiotics and potential surgery. Complications from IE can be severe, including organ injury from septic emboli, heart failure, valvular insufficiency, bacteremia, and fulminant septic shock. Prompt identification and treatment are necessary to reduce patient morbidity and mortality.

Balloon Tamponade for the Management of Gastrointestinal Bleeding.

BACKGROUND: Acute gastrointestinal bleeding is a potentially life-threatening condition that requires rapid intervention. In critically ill patients who are refractory to other therapies, balloon tamponade devices can be lifesaving. OBJECTIVE: We provide a review of balloon tamponade devices for gastric and esophageal variceal bleeding for emergency clinicians. DISCUSSION: Balloon tamponade is intended for hemodynamically unstable patients with massive gastrointestinal bleeding and inability to perform endoscopy, failed endoscopy, delay in endoscopy, or the need to stabilize before transfer. There are 3 main tamponade devices: the Linton-Nachlas tube, the Sengstaken-Blakemore tube, and the Minnesota tube. Each tamponade device has some unique features including the number of balloons and ports. We describe the technique with pearls and pitfalls for placement. CONCLUSIONS: It is essential for emergency physicians to be familiar with balloon tamponade for acute gastrointestinal bleeding. We review the common balloon tamponade devices, and this article is intended to serve as a resource for those interested in expanding their knowledge of balloon tamponade. © 2022 Elsevier Inc.

A first trimester pregnancy with cerebrovascular accident treated with thrombolytic therapy.

Pregnant patients are at increased risk of cerebrovascular accident due to the prothrombotic state of pregnancy. This risk is highest in those with pre-eclampsia and eclampsia as well as those of Asian descent. Despite this increased risk, pregnancy was an exclusion criterion for major stroke intervention trials. As a result, there are significant challenges concerning the management of this unique patient population. We describe a case of an early first trimester cerebrovascular accident treated with systemic thrombolysis.

Acute coronary syndrome in Dextrocardia.

Situs inversus with dextrocardia is both a clinical and diagnostic challenge for emergency physicians to properly identify acute coronary syndrome. While dextrocardia itself does not independently increase the risk of coronary artery disease, mirrored symptoms, including right-sided and rightward radiating chest pain in any patient with cardiac risk factors should raise suspicion for acute coronary syndrome. In patients with a reversed cardiac silhouette on a chest radiograph, a reversed electrocardiogram, to include both the precordial and limb leads, is necessary to evaluate for cardiac ischemia in presumed dextrocardia. The authors present a case of a 66-year-old man with dextrocardia who presented with shortness of breath and hypotension. Rapid application of a reversed electrocardiogram resulted in the timely diagnosis of ST-segment elevation myocardial infarction and activation of the cardiac catheterization laboratory resulting in the preservation of this patient's life.

A coronavirus disease-2019 induced pancytopenia.

As the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV2) pandemic progresses, various hematologic complications have emerged, often centered around the hypercoagulable state. However, pancytopenia represents a rare but serious complication from SARS-CoV2 infection. While lymphopenia is a common finding, concomitant acute anemia and thrombocytopenia are not commonly reported. We describe a novel case of SARS-CoV2 pancytopenia in a 40-year-old male without active risk factors for cell line derangements but subsequent critical illness.

Decompensated hypothyroidism: A review for the emergency clinician.

BACKGROUND: Decompensated hypothyroidism, formerly known as myxedema coma, is an endocrine emergency that commonly presents with altered mental status, as well as hypothermia and depressed vital signs. The condition is often caused by an inciting event, which may lead to significant delays in the diagnosis and management of this disease. Although the incidence is low, this disease is associated with significant morbidity and mortality. Therefore, it is important for emergency clinicians to be aware of this condition. OBJECTIVE: This narrative review evaluates the emergency medicine diagnosis and management of adult patients with decompensated hypothyroidism. DISCUSSION: Decompensated hypothyroidism is a severe hypothyroid state associated with multiple organ failure. The diagnosis can be challenging due to similarities with more common diseases and lack of consideration of the diagnosis. Many patients may present with altered sensorium or depressed vital signs. Clinicians should obtain a thyroid stimulating hormone and free thyroxine level when considering the diagnosis. Management involves resuscitation, early steroid supplementation, thyroid hormone replacement, and treatment of the inciting event. CONCLUSIONS: Decompensated hypothyroidism should be considered in the evaluation of patients with altered sensorium and depressed vital signs so as to not miss this critical diagnosis.

Electrocardiographic manifestations of COVID-19.

INTRODUCTION: Coronavirus disease of 2019 (COVID-19) is a lower respiratory tract infection caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). This disease can impact the cardiovascular system and lead to abnormal electrocardiographic (ECG) findings. Emergency clinicians must be aware of the ECG manifestations of COVID-19. OBJECTIVE: This narrative review outlines the pathophysiology and electrocardiographic findings associated with COVID-19. DISCUSSION: COVID-19 is a potentially critical illness associated with a variety of ECG abnormalities, with up to 90% of critically ill patients demonstrating at least one abnormality. The ECG abnormalities in COVID-19 may be due to cytokine storm, hypoxic injury, electrolyte abnormalities, plaque rupture, coronary spasm, microthrombi, or direct endothelial or myocardial injury. While sinus tachycardia is the most common abnormality, others include supraventricular tachycardias such as atrial fibrillation or flutter, ventricular arrhythmias such as ventricular tachycardia or fibrillation, various bradycardias, interval and axis changes, and ST segment and T wave changes. Several ECG presentations are associated with poor outcome, including atrial fibrillation, QT interval prolongation, ST segment and T wave changes, and ventricular tachycardia/fibrillation. CONCLUSIONS: This review summarizes the relevant ECG findings associated with COVID-19. Knowledge of these findings in COVID-19-related electrocardiographic presentations may assist emergency clinicians in the evaluation and management of potentially infected and infected patients.