一位高血壓孕婦正在接受硫酸鎂治療子癇前症，護理師觀察到哪一現象需立即報告醫師？
A nurse is assessing a client with a history of hypertension who is receiving an IV infusion of magnesium sulfate for preeclampsia. Which finding should the nurse report to the provider immediately?
- ABlood pressure of 140/90 mmHg血壓140/90 mmHg
- BAbsent patellar reflexes膝腱反射消失
- CUrinary output of 35 mL/hr尿量35 mL/hr
- DRespiratory rate of 10 breaths/min✓ 正解呼吸頻率10次/分
硫酸鎂（Magnesium Sulfate）常用於治療子癇前症（Preeclampsia），但具有中樞神經及呼吸抑制的副作用。護理師需監測中毒徵象，包括呼吸抑制（<12次/分）、深部肌腱反射消失（Patellar reflexes absent）及尿量減少。呼吸速率過慢是生命徵象衰竭的最直接指標，需立即停藥並通知醫師。
Magnesium sulfate is commonly used to treat preeclampsia but has central nervous system and respiratory depressant adverse effects. The nurse must monitor for signs of toxicity, including respiratory depression (<12 breaths/min), absent deep tendon reflexes (such as patellar reflexes), and decreased urine output. A markedly slow respiratory rate is the most direct sign of impending failure of vital signs and requires immediate cessation of the medication and notification of the physician.