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May is Mental Health Awareness Month!
We’re spotlighting Psychiatry from the Internal Medicine Qbank+ with this board-style Q&A.
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👇 Drop your answer in the comments and let us know how you did!

Use this mnemonic to remember - Classes of Antiarrhythmic Drugs

There are 4 main classes of antiarrhythmic drugs, grouped according to their mechanisms of action. This classification is known as the Vaughan Williams Classification.

A mnemonic can help you remember the mechanisms of the different antiarrhythmic classes—No Breaks Keep Cramming:

• No: Na+ (sodium) channel blockers = Class I
• Breaks: Beta-blockers = Class II
• Keep: K+ (potassium) channel blockers = Class III
• Cramming: Ca2+ (calcium) channel blockers = Class IV

Mnemonic pulled from MedStudy’s Medical Student Core Cardiology book. Get the full Medical Student Digital Core with MedStudy’s $29 subscription—Step 1 & Step 2 Qbank+ included.