A nurse is caring for an adult client with a heart rate of 118/min. Which intervention is most appropriate to address tachycardia?

• A. Encourage the client to reduce intake of caffeinated soft drinks.
• B. Inform the client to ambulate in the hallway for 10 min prior to taking vital signs.
• C. Increase the room temperature and add blankets to warm the client.
• D. Withhold the client's anti-anxiety medication.

Answer: (A)

Tachycardia in adults is often driven by stimulants like caffeine, which increase sympathetic activity and raise the heart rate. Caffeine blocks adenosine receptors and boosts catecholamine effects, making the heart beat faster. Because this is a modifiable factor, the best first step is to help the patient cut back on caffeine-containing drinks. Reducing this stimulus can directly reduce the excessive heart rate and may normalize it without needing medications or more invasive measures.

Other options don’t address the underlying trigger. Ambulating before vitals would typically raise heart rate and could worsen tachycardia, not correct it. Warming the patient with more blankets could alter comfort but doesn’t treat the cause and may not help the tachycardia. Withholding anti-anxiety medication ignores a potential contributor if anxiety is part of the picture and misses an opportunity to alleviate sympathetic drive. In addition to reducing caffeine, continue to monitor vital signs, assess for other contributors (pain, dehydration, fever, infection), and address any other reversible factors if the tachycardia persists or is accompanied by concerning symptoms.