Most of what people believe about CPR comes from television, where it almost always works. The reality is harder, rougher, and more important to understand, especially if you may ever have to make a decision about it.

Critical is the word people fear most from a hospital. It does not mean a patient is dying, and it is not the opposite of stable. Here is what doctors actually mean when they use it.

Most people hear "stable" and assume everything is okay. But stable does not mean cured, and it does not always mean safe. Here is what doctors actually mean when they use it.

A blood draw from the wrist is sharper and more deliberate than the usual stick in the arm. Emergency physicians order it when they need to know exactly how well your lungs are working and whether your blood is becoming dangerously acidic. Here is what an arterial blood gas measures and why it sometimes changes everything.

Tiffany Sanders Alima, DO

Adam Kalwerisky, MD

Jehangir Meer, MD

Melissa White, MD MPH

Daniel Wu, MD

Anaphylaxis is not “just an allergic reaction.” It is a whole-body emergency that can rapidly affect breathing, blood pressure, and the airway. This article explains what anaphylaxis looks like and why every minute matters.

Testicular torsion is one of the most time-sensitive emergencies in young men and boys. This article explains what it is, how it presents, how it is diagnosed, and why fast treatment matters.

Sepsis is not “just an infection.” It is a whole-body emergency that can cause rapid deterioration, organ failure, and shock. This article explains what sepsis is, how it presents, and why every minute matters.

DKA is one of the most dangerous emergencies caused by uncontrolled diabetes. This article explains what diabetic ketoacidosis is, why it happens, what symptoms it causes, and how ER doctors recognize and treat it fast.

Vomiting is common in the ER, but the cause is not always simple. This article explains how doctors think through vomiting, what dangerous causes they look for first, and why the workup can range from fluids to brain scans.

A racing or pounding heartbeat can be caused by dehydration, anxiety, anemia, thyroid problems, or an abnormal heart rhythm. This article explains how ER doctors think through palpitations and what makes them more concerning.

Ovarian torsion is a medical emergency that can be missed on CT scan but seen on ultrasound. This article explains how it presents, why it happens, and why fast diagnosis is critical to save the ovary.

When someone is suddenly “not acting like themselves,” the cause can range from mild to life-threatening. This article explains what altered mental status means in the ER, what doctors worry about first, and how confusion gets worked up fast.

Dizziness is one of the most common ER complaints and one of the most misunderstood. This article explains the difference between vertigo and lightheadedness, what doctors look for first, and when dizziness can signal something serious.

Not all rashes are the same. Some are itchy and harmless. Others can signal infection, allergic reaction, or even a medical emergency. This article explains how ER doctors quickly sort dangerous rashes from the ones that can safely wait.

A “normal” test result in the ER does not always mean nothing is wrong. This article explains what ER labs and imaging are really looking for, why some tests are repeated, and what “normal for now” often actually means.