What Causes the Different P Wave Morphologies in an ECG

question 32

Multiple Choice

What causes the different P wave morphologies in an ECG tracing that shows wandering atrial pacemaker?

• A)The variable strength of the atrial contraction caused by each impulse
• B)The rate at which the ectopic impulses are generated
• C)The varying sites of the ectopic impulses
• D)The morphology of the resulting QRS complexes

---

Definitions:

Economic Gain

The increase in wealth or resources resulting from the profitable activities of individuals or businesses.

Self-interest

The consideration of one's own advantages or benefits in decision making or behavior.

Productivity

The measure of efficiency of a person, machine, factory, system, etc., in converting inputs into useful outputs.

Scientific Management

A theory of management that analyzes and synthesizes workflows, aiming to improve economic efficiency, especially labor productivity, by scientific means.