When a client in the cardiac care unit (CCU) suddenly develops paroxysmal atrial tachycardia (PAT) of 200 beats/min and clinical manifestations of severe dizziness, the nurse would help de-crease the heart rate by
a. administering digitalis intravenously.
b. asking the client to perform the Valsalva maneuver.
c. increasing the client's oxygen.
d. lowering the head of the bed.
B
Any maneuver that stimulates the vagus nerve can successfully terminate PAT or increase AV block. Vagotonic maneuvers include carotid sinus massage and the Valsalva maneuver (bearing down as with bowel movements).
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