Why Henderson and Hasselbalch Belong in the ED
If you’re like me, you learned and then promptly forgot the Henderson Hasselbalch equation (HH eq) in medical school.1 After all, in clinical rotations it was never invoked, and our patients seemed to have fared well without it. So why bring up the topic now?
Medicine is changing. The ubiquitous nature of computing allows a level of sophistication exponentially greater than before. To a large extent we’re freed from much of the onerous work of rote memorization. In the ideal, that should free us to be more thoughtful about the way we approach our work and to have a deeper understanding of health and disease. Going forward, medicine will become increasingly computational. With that in mind, I’ll make three points about the HH eq.
Welcome to the fourth ALiEM 
We’re all pretty familiar with the banana bag: intravenous (IV) fluids with the addition of thiamine, folic acid, multivitamins, and sometimes magnesium. Banana bags are commonly utilized in patients at risk for alcohol withdrawal symptoms or those who present to the emergency department (ED) acutely intoxicated.
Welcome to another ultrasound-based case, part of the “Ultrasound For The Win!” (#US4TW) Case Series. In this peer-reviewed case series, we focus on real clinical cases where bedside ultrasound changed management or aided in diagnoses. In today’s case, a 30-year-old male is brought in after blunt trauma from a high-speed MVC.