The nurse is caring for a client who is undergoing a pharmacological stress test because she cannot use the treadmill. The nurse administers the prescribed dose of adenosine. Which physiological response indicates an adverse effect of the adenosine requiring intervention by the nurse?

Numbers 1, 4, and 5 are correct.

Rationale: Adverse effects of adenosine include nausea, chest pain, and facial flushing. The nurse should stop the infusion and monitor the client for abatement of symptoms. Adenosine has a half-life of 10 seconds, so symptoms should resolve shortly. A respiratory rate of 18 and heart rate of 97 are within normal limits and do not require any intervention.