A patient is scheduled to have a pacemaker implanted. The nurse knows pacemakers can be inserted to correct what problem?
A) Increased blood pressure
B) Increased pulse pressure
C) Malfunction of the sinuatrial (SA) node
D) Onset of oncotic pressure
C
Feedback:
Pacemaker cells are found in the SA node of the heart, which controls cardiac contraction and relaxation, therefore controlling the overall heart rate. If the SA node malfunctions, a pacemaker would be indicated. Hypertension, increased pulse pressure, and onset of oncotic pressure would not be an indication for pacemaker insertion.
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