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

question 45

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 has a heart rate of 60 beats/min and that the start of the P region until the end of the T region represents one cardiac cycle. If the x axis in the EKG is time, approximately how much time passes between the start of the P region and the end of the T region?

• A) 0.1 second
• B) 1 second
• C) 10 seconds
• D) 60 seconds

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Definitions:

Retained Earnings

Retained earnings represent the accumulated net income of a company that has not been distributed to shareholders as dividends but is reinvested in the business.

FOH Volume Variance

A measurement in managerial accounting that compares the budgeted factory overhead for actual production volumes against the applied factory overhead based on standard costing.

FOH Budget Variance

The difference between the actual factory overhead costs incurred and the overhead costs allocated to production based on budgeted rates.

Fixed Manufacturing Overhead

Costs that do not change with the level of production, including salaries, rent, and insurance.