Electrocardiographs (ECGs or EKGs) Provide Data About the Electrical Activity

question 44

Multiple Choice

Electrocardiographs (ECGs or EKGs) provide data about the electrical activity of the heart. By placing a series of "leads" on a person's chest, the electrical activity of the heart can be recorded and analyzed in order to detect irregular heartbeats (arrhythmias) and other conditions. The figure below shows a normal EKG tracing for one cardiac cycle.
The P region represents electrical activity spreading through the atria. The QRS region represents electrical activity spreading through the ventricles. The T region represents electrical activity in the ventricles returning to rest.
-Suppose a person's AV node in their heart suddenly stopped sending signals to the rest of the heart. How would this person's EKG differ from normal?

• A) The EKG would have a taller P region.
• B) The EKG would not have a QRS region.
• C) The EKG would have a shorter T region.
• D) The EKG would not have a gap between the S and T regions.

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Definitions:

Communication Process

The series of steps taken to convey messages effectively from sender to receiver.

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The state of having comprehensive knowledge or understanding about a particular subject or situation.

Informal Network

Unofficial channels of communication within an organization, not defined by the organizational structure.

Grapevine

Informal channels of communication within an organization or community, often spreading rumors or unofficial information.