The P wave represents which of the following?

a. Atrial contraction
b. Atrial depolarization
c. Sinus node discharge
d. Ventricular contraction


B
The P wave is an electrical event and represents atrial depolarization. Atrial contraction should accompany the P wave but does not always. The sinus node discharge is too faint to be recorded on the surface electrocardiogram. Ventricular contraction usually accompanies the QRS complex.

Nursing

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Nanoparticles appear to have a very bright and meaningful future in the world; however, what is one potential issue with nanoparticles?

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Imagery involves the use of pictures, sounds, or sensations that are:

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A case manager implements a primary prevention activity. Which of the following actions would the nurse most likely complete?

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