護理師正給予預定的地高辛靜脈注射劑量。哪個評估發現會要求護理師暫停給藥並通知醫護人員？
A nurse is administering a scheduled intravenous dose of digoxin. Which assessment finding requires the nurse to hold the dose and notify the healthcare provider?
- AHeart rate 52 beats/min✓ 正解心率 52 次/分
- BHeart rate 72 beats/min心率 72 次/分
- CBlood pressure 130/80 mmHg血壓 130/80 mmHg
- DPotassium level 4.0 mEq/L鉀離子濃度 4.0 mEq/L
地高辛（Digoxin）具有負性變時作用（negative chronotropic effect），即會降低心率。臨床給藥標準通常為：成人心率若低於 60 次/分，必須暫停給藥並通知醫師。心搏過緩（bradycardia）是地高辛毒性（toxicity）的早期徵兆之一。若繼續給藥，可能誘發致命性的心律不整。護理師在給藥前必須進行完整的「心尖脈」（apical pulse）評估，為期一分鐘。
Digoxin has a negative chronotropic effect (slows heart rate). The clinical standard for adults is to hold the dose and notify the provider when the heart rate is below 60 bpm. Bradycardia is an early sign of digoxin toxicity, and continuing the dose may precipitate life-threatening arrhythmias. The nurse must perform a complete apical pulse assessment for a full minute before administration.