Emergency Medical Minute

Contributor: Dylan Luyten MD Educational Pearls: What is a Bradyarrhythmia? Also known as a bradyarrhythmia, it is an irregular heart rate that is also slow (below 60 beats per minute). What can cause it? Complete heart block AKA third-degree AV block; identified on ECG by a wide QRS, and complete dissociation between the atrial and ventricular rhythms with the ventricular being much slower. Treat...

Contributor: Aaron Lessen MD Educational Pearls: Tranexamic acid (TXA) is a common medication to achieve hemostasis in a variety of conditions Patients visiting the ED for gross hematuria (between March 2022 and September 2022) were treated with intravesical TXA 1 g tranexamic acid in 100 mL NS via Foley catheter Clamped Foley for 15 minutes Subsequent continuous bladder irrigation, as is standard...

Contributor: Meghan Hurley MD Educational Pearls: What is Cellulitis? A common and potentially serious bacterial skin infection. Caused by various types of bacteria, with Streptococcus and Staphylococcus species being the most common. What is Preseptal Cellulitis and why is it more serious than facial cellulitis? Preseptal Cellulitis, also known as Periorbital Cellulitis, is a bacterial infection...

Contributors: Andrew White MD - Outpatient Psychiatrist; Fellowship Trained in Addiction Psychiatry; Denver Health Travis Barlock MD - Emergency Medicine Physician; Swedish Medical Center Summary In this episode of Mental Health Monthly, Dr. Travis Barlock hosts Dr. Andrew White to discuss the elements of mania that may be encountered in the emergency department. The discussion includes a helpful...

Contributor: Travis Barlock MD Education Pearls: The Cushing Reflex is a physiologic response to elevated intracranial pressure (ICP) Cushing's Triad: widened pulse pressure (systolic hypertension), bradycardia, and irregular respirations Increased ICP results from systolic hypertension, which causes a parasympathetic reflex to drop heart rate, leading to Cushing's Triad.  The Cushing Reflex is a...

Contributors: Kalen Abbott, MD - EM Physician and Medical Director for AirLife Denver Brendan Reiss - Flight Nurse AirLife Denver Matt Spoon - Flight Paramedic AirLife Denver Jordan Ourada - EMS Coordinator at Swedish Medical Center and Paramedic Summary: In this episode, hosted by Jordan Ourada, Brendan Reiss and Matt Spoon present a first-hand experience case of hydrofluoric acid exposure in a p...

Contributor: Meghan Hurley MD Educational Pearls: What is ATLS? Advanced Trauma Life Support (ATLS) is a systematic and comprehensive approach to the evaluation and management of trauma patients It was developed by the American College of Surgeons (ACS) The key components include the Primary Survey ("ABCDE"), the Secondary Survey, Definitive Care, and Special Considerations What are the issues wit...

Contributor: Meghan Hurley MD Educational Pearls: Shift work is defined as anything that takes place outside of a 9-5 schedule, not exempting day-shift medical workers Various ill effects of shift work on overall health: Increased all-cause mortality Increased number of accidents Glucose metabolism dysregulation Increased BMI Fertility impacts for men and women Increased breast cancer risk Decreas...

Contributor: Aaron Lessen MD Educational Pearls: Why is airway management more difficult in obesity? Larger body habitus causes the chest to be above the head when the patient is lying supine, creating difficult angles for intubation. Reduced Functional Residual Capacity (FRC) causes these patients to deoxygenate much more quickly, reducing the amount of time during which the intubation can take p...

Contributor: Nick Tsipis MD Educational Pearls: The scaphoid bone is the most proximal carpal bone just distal to the radius Fractures of the scaphoid bone are sometimes missed by plain X-rays A 2020 review found a 21.8% incidence of missed scaphoid fractures later diagnosed by advanced imaging modalities Only MRI has a sensitivity above 90% for diagnosing scaphoid fractures Sensitivity of plain-f...

Contributor: Aaron Lessen MD Educational Pearls: What is Carbamazepine (Tegretol)? Carbamazepine is an anti-epileptic drug with mood-stabilizing properties that is used to treat bipolar disorder, epilepsy, and neuropathic pain. It functions primarily by blocking sodium channels which can prevent repetitive action potential firing. What are the symptoms of an overdose? Common initial signs include...

Contributor: Jason Papazian MD, Travis Barlock MD, Jeffrey Olson Summary: In this episode, Dr. Travis Barlock and Jeffrey Olson meet in the studio to discuss several clips from Dr. Jason Papazian's talk at the event "Laboring Under Pressure, Managing Obstetric Emergencies in a Global Setting" from May 2023. This event was hosted at the University of Denver and was organized with the help of Joe Pa...

Contributor: Aaron Lessen MD Educational Pearls: A recent randomized controlled trial compared ondansetron 8 mg IV with droperidol 2.5 mg IV for the treatment of nausea & vomiting in the emergency department.  Overall, droperidol and ondansetron had similar primary outcomes in acute nausea control  Symptom improvement in 93% of patients receiving droperidol vs. 87% receiving ondansetron (P = 0.362...

Contributor: Aaron Lessen MD Educational Pearls: What is measured in an ABG/VBG? Blood values for oxygen tension (pO2), carbon dioxide tension (pCO2), acidity (pH), oxyhemoglobin saturation, and bicarbonate (HCO3) in either arterial or venous blood Other tests can measure methemoglobin, carboxyhemoglobin, hemoglobin levels, base excess, and lactate What are they used for? Identification of ventila...

Contributor: Aaron Lessen MD Educational Pearls: Patients with alcohol use disorder are frequently discharged from the ED without further resources Pharmacological treatments to reduce cravings in AUD exist Naltrexone  Effective at reducing alcohol cravings and heavy drinking  Gabapentin Reduces the percentage of heavy drinking days in AUD Patients being discharged from the ED should be asked if t...

Contributor: Travis Barlock MD Educational Pearls: When might you need to apply a painful stimulus in a medical setting? The main reason is to assess the patient's level of consciousness, such as when they are waking up from anesthesia or have potentially suffered a brain injury. It can be part of the Glasgow Coma Scale (GCS) if patients are not responding to auditory stimuli. Possible levels of c...

Contributor: Travis Barlock MD Educational Pearls: Alcohol binds the GABA receptor, which produces an inhibitory response, hence the "depressive" effects of ethanol beverages. Over time, alcohol downregulates the GABA receptors, leading to unopposed glutamate activity. Given that glutamate is excitatory, this can lead to seizures. Alcohol also suppresses REM sleep; in patients with chronically sup...

Contributors: David Young MD, John Hesling MD, Travis Barlock MD, Jeffrey Olson Summary: In this episode, Dr. Travis Barlock and Jeffrey Olson meet in the studio to discuss several clips from the event "Ukraine Brewtalk" from October 2022. This event was hosted by the University of Colorado's Center for COMBAT Research and Emergency Medical Minute assisted in the audio recording of the speakers. T...

Contributor: Travis Barlock MD Educational Pearls: Clinical picture: A patient comes in with altered mental status, tachycardia, fever, elevated T4, and low TSH. What's the diagnosis?... Thyrotoxicosis secondary to Graves' Disease. How do you treat thyrotoxicosis? First, give a beta-blocker such as propranolol. This suppresses the elevated adrenergic activity. Second, give a thionamide such as pro...

Contributor: Aaron Lessen MD Educational Pearls: 33 Medical residents and 91 nurses at Massachusetts General Hospital were randomized into two groups: Intervention group: 15 PGY-1 residents assigned to the same medical service floor for a 16-week period (12 weeks after adjustment for COVID-19 restrictions) alongside 43 nurses. Control group: 18 PGY-1 residents assigned to the usual 4-week block ro...

Contributor: Meghan Hurley MD Educational Pearls: What do you do if you need a stat pregnancy test on an incapacitated patient? You can send a serum quantitative human chorionic gonadotropin (beta-HCG), but that might take a while for the lab to process. Another option is to place a drop of whole blood on a urine pregnancy immunoassay. These tests are already verified for urine and serum. 2012 stu...

Contributor: Chris Holmes MD Educational Pearls: "It's a poor sort of memory that only works backwards" - Transient Global Amnesia A syndrome with sudden retrograde memory loss in which patients cannot retain new information Characterized by perseveration in frequent intervals Typically improves within hours MRI is normal initially Alice In Wonderland Syndrome A disorder in which patients experien...

Contributor: Nicholas Tsipis, MD Educational Pearls: What study was Dr. Tsipis talking about? In December of 2022, the Agency for Healthcare Research and Quality (AHRQ) put out a study titled "Diagnostic Errors in the Emergency Department: A Systematic Review." This study triggered many news stories from prominent outlets with headlines such as, "More than 7 million incorrect diagnoses made in US...

​​Contributor: Travis Barlock MD Educational Pearls The QT interval represents phases 2 and 3 of ventricular plateau and repolarization, respectively. As the QT interval lengthens, more sodium and calcium channels are available and susceptible to action potentials. Prolonged QT interval is more concerning in the setting of bradycardia. This scenario increases the likelihood of R on T phenomenon. ...

Contributors: Andrew White MD & Travis Barlock MD In this follow-up episode Dr. Andrew White, a practicing psychiatrist with an addiction medicine fellowship, and Dr. Travis Barlock, an emergency physician at Swedish Medical Center, discuss mental health holds, psychiatric placement, pharmacologic vs. non-pharmacologic treatments, and outpatient care of psychotic patients. If you missed it, be sur...