Why Would a Heart Rate in Excess of 170 to 220

question 23

Multiple Choice

Why would a heart rate in excess of 170 to 220 bpm result in decreased cardiac output?

• A) The diastolic time becomes too short to allow adequate ventricular filling.
• B) The sinoatrial conduction slows down at high heart rates.
• C) The blood volume in the ventricles is normal but the ejection fraction decreases.
• D) The systolic time becomes too short to allow adequate ventricular emptying.

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Definitions:

Daily Demand

The total requirement or desire for a product or service on a daily basis.

Computers

Electronic devices designed to accept data, perform prescribed mathematical and logical operations at high speed, and display the results.

Expected Value

The sum of all possible values each multiplied by its probability of occurrence.

Binomial Distribution

A probability distribution that models the number of successes in a fixed number of independent Bernoulli trials with the same probability of success.