A Nurse Should Be Concerned When Observing a Patient Performing

question 13

Multiple Choice

A nurse should be concerned when observing a patient performing isometric exercises if the patient is:

• A) Holding his or her breath while exerting
• B) Performing the exercises four times per day
• C) Tightening each muscle group for 8 seconds, then relaxing
• D) Repeating each exercise 8 to 10 times for each muscle group

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Definitions:

Random Variable

A numerical variable that reflects the outcomes of an unpredictable event.

Standard Normal Distribution

A normal distribution with a mean of 0 and a standard deviation of 1, used in statistical analysis.

Mean

The average of a set of numbers, calculated by dividing the sum of all the numbers by the count of numbers.

Standard Error

The standard deviation of the sampling distribution of a statistic, most commonly the mean; it is used to estimate the efficiency, accuracy, or precision of a sample-based estimate.