In Which Class of the Vaughn-Williams Classification System of Anti-Dysrhythmic

question 49

Multiple Choice

In which class of the Vaughn-Williams classification system of anti-dysrhythmic medications does propranolol belong?

• A) IA
• B) IB
• C) IC
• D) II

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Definitions:

Canadian Shield

A vast area of mostly crystalline rocks exposed in the eastern half of Canada and the Great Lakes region of the United States.

Precambrian

The era in Earth's history before the Cambrian Period, representing the time from the planet's formation to 541 million years ago.

Tectonic Terranes

Distinct portions of the Earth's crust, often with a unique geological history, that have been attached to a tectonic plate through the process of accretion.

Accretion

The process of gradual growth or increase, particularly through the accumulation of additional layers or matter, especially in a cosmic or geological context.