護理師正給予多巴胺（dopamine）的靜脈輸注。病人的心率為 115 bpm，血壓為 100/60 mmHg。處方劑量是基於達成足夠尿量。首要的護理措施是什麼？
A nurse is administering an IV infusion of dopamine. The client's heart rate is 115 bpm and blood pressure is 100/60 mmHg. The prescribed dose is based on achieving adequate urine output. What is the priority nursing action?
- ADecrease the infusion rate due to the elevated heart rate.因心率升高而減慢輸注速率
- BNotify the physician about the tachycardia.✓ 正解將心搏過速情形通知醫師
- CIncrease the infusion rate to improve blood pressure.增加輸注速率以改善血壓
- DAdminister a beta-blocker to control heart rate.給予乙型阻斷劑以控制心率
多巴胺（Dopamine）是一種擬交感神經藥物，具有劑量依賴性的受體作用。病人出現心搏過速（Tachycardia, 115 bpm）且血壓仍處於邊緣（100/60 mmHg），這顯示藥物已產生過強的 β1 受體刺激作用，導致心肌耗氧量大幅增加，增加心律不整風險。護理師應評估臨床優先順序（Priority），在心率過快的情況下，不應單純增加劑量，而應通知醫師評估是否調整劑量或更換藥物。
Dopamine is a sympathomimetic medication with dose-dependent receptor effects. This client shows tachycardia (115 bpm) with borderline blood pressure (100/60 mmHg), suggesting that the drug has produced excessive beta-1 receptor stimulation, substantially increasing myocardial oxygen demand and the risk of dysrhythmias. The nurse should establish clinical priority; in the setting of tachycardia, the dose should not simply be increased. Instead, the physician should be notified to assess whether to adjust the dose or change the medication.