Emergency Medicine Mnemonics

USED CARS mnemonic for non-anion gap metabolic acidosis (NAGMA):

Why “USED CARS”?

• Ureterosigmoidostomy

• Saline & Chloride infusion (excessive).. chloride offsets AG

• Endocrine disorders (Addison’s disease aka adrenal insufficiency, hypoaldosteronism)

• Diarrhea

• Carbonic anhydrase inhibitors

• Ammonium chloride

• Renal tubular acidosis

• Spironolactone

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U – Ureteroenteric fistula (or diversion surgery)

• Why NAGMA?

•...

The GOLD MARK causes are divided into three major pathophysiologic groups based on the source of the acid production:

1. Alcohols (Toxic Ingestions) → Emergency Toxins

• Glycols → Ethylene glycol (antifreeze) and propylene glycol

• Methanol → Windshield washer fluid, homemade alcohol substitutes

• Why grouped together?

• Common in suicide attempts, accidental ingestions, or chronic alcoholics.

• Key labs: Serum osmolality, ...

Mister Ronald McDonald (MR RM) is a helpful flowchart for interpreting acid-base disorders, specifically for determining whether a patient’s condition is due to a metabolic (M) or respiratory (R) cause:

1. Check the pH (7.4 is the cutoff)

• pH > 7.4 → Alkalosis

• pH < 7.4 → Acidosis

2. Assess Carbon Dioxide (CO₂) Levels (PaCO₂)

• The key threshold is 40 mmHg:

• If CO₂ > 40 mmHg, this suggests respiratory acidosis or metaboli...

To determine if the patient requires admission or can be discharged, the Glasgow-Blatchford Score (GBS) is used.

Here’s the ABCDEF mnemonic and why these factors increase the risk of an upper GI bleed:

• ​ A - Active: Conditions like syncope or melena indicate ongoing or significant bleeding, increasing risk severity.

• ​ B - Blood Urea Nitrogen: Levels ≥ 7 mg/dL suggest impaired kidney function, which is often a...

The “H’s and T’s” refer to a mnemonic used in medicine to help healthcare professionals quickly recall the most common causes of cardiac arrest during a code (a medical emergency requiring CPR). Memorizing these is crucial because identifying and addressing these causes rapidly can improve the chances of saving a patient’s life.

Here’s a breakdown:

The H’s: OK TV

Hypoxia - Lack of oxygen to tissues can lead to a heart stoppin...

The “KEEP” mnemonic is a tool to remember the most common organisms causing urinary tract infections (UTIs). Here’s how the mnemonic breaks down, followed by key information relevant for emergency medicine boards:

K - Klebsiella species

• Relevance: Klebsiella is the second most common organism causing UTIs, especially hospital-acquired infections.

• Key Points:

• Gram-negative rod.

• Often seen in patients with underlying c...

The **SPIT** mnemonic is used to help remember common causes of **altered mental status in children**. Here's what each letter stands for:

- **S**eizures: Includes both febrile and non-febrile seizures that can cause confusion or unconsciousness.

- **P**oisoning: Exposure to toxins or ingestion of substances like medications, household chemicals, or recreational drugs.

- **I**nfections: Infections such as meningitis, encephalitis,...

Procedure Timeout Mnemonic:

This mnemonic covers the key elements to verify before starting, ensuring patient safety and team communication. Here's what **IMPACTS** stands for:

1. **I – Identify**:

- **Verify the Patient's Identity**: Confirm the patient's full name, date of birth, and medical record number using their wristband and verbally with the patient if possible.

2. **M – Match the Procedure**:

- **Verify the Proced...

This is the CATS mnemonic to remember the signs for hypocalcemia.

### **Causes of Hypocalcemia**

- **Hypoparathyroidism**: Often due to surgical removal of parathyroid glands.

- **Vitamin D deficiency**: Impaired calcium absorption.

- **Renal disease**: Reduced conversion of Vitamin D to its active form and poor calcium reabsorption.

- **Pancreatitis**: Fat saponification binds calcium.

- **Hypomagnesemia**: Leads to impaired PTH...

In emergency medicine education, understanding the fat-soluble vitamins A, D, E, and K (ADEK) is important because they play crucial roles in the body, and both their deficiency and toxicity can have serious health consequences. Here's a breakdown:

### Vitamin A:

- **Function**: Important for vision, immune function, and skin health.

- **Deficiency**: Can lead to night blindness, dry eyes, and increased infection risk.

- **Toxicity...