An ECG Rhythm Strip Shows a Regular Ventricular Rhythm at a Rate

question 45

Multiple Choice

An ECG rhythm strip shows a regular ventricular rhythm at a rate of 30 beats/min,more P waves than QRS complexes (the P waves occur regularly) ,a variable PR interval,and a QRS duration of 0.14 seconds.This rhythm is _____.

• A) 2:1 AV block
• B) third-degree AV block
• C) second-degree AV block type I
• D) second-degree AV block type II

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Definitions:

Arousal Theory

A theory in psychology that suggests there is an optimal level of arousal for each individual that leads to the best performance on tasks; too little or too much arousal can decrease performance.

Equipotentiality Theory

The concept that various parts of the brain can take over the functions of other parts if those parts are damaged.

Effortful Processing

A type of information processing that requires a significant amount of attention and conscious effort in order to encode information into memory.

Automatic Processing

The unconscious encoding of incidental information such as space, time, and frequency, and of well-learned information.