The nurse assesses the patient and records the data collected. What would lead the nurse to anticipate that the patient will experience a decrease in cardiac output?
A) An order for the patient to receive digoxin
B) A heart rate of 54 beats per minute
C) A pulse oximetry reading of 98%
D) An increase in preload related to ambulation in the hall
Ans: B
Feedback: Cardiac output is computed by multiplying the stroke volume by the heart rate. Cardiac output can be affected by changes in either stroke volume or heart rate, such as a rate of 54 beats per minute. An increase in preload will lead to an increase in stroke volume. Digoxin will increase contractility of the heart and ultimately increase stroke volume. A pulse oximetry reading of 98% does not indicate hypoxemia, as hypoxia can decrease contractility.
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