The nurse is caring for a client who is suspected of having a sinus dysrhythmia. Which of the following statements made by the nurse is accurate?
a. Tachycardia can be due to activation of the parasympathetic nervous system
b. Tachycardia can be due to activation of the sympathetic nervous system
c. The client will need to have a pacemaker placed
d. The origin of the dysrhythmia is the AV node
b. Tachycardia can be due to activation of the sympathetic nervous system
rationale: One type of cardiac dysrhythmia is sinus tachycardia, meaning the tachycardia originates in a sinoatrial node. If the dysrhythmia is sinus tachycardia, it can be due to activation of the sympathetic nervous system. It could also be due to a fever, medications or illicit drug use. Atrial and ventricular rates in sinus tach are 100 - 180 beats per minute.
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