— 藥理與非經腸給藥 · MEDIUM · MCQ —
下列何者描述了病人自控式止痛幫浦 (PCA) 的目的？
Which of the following describes the purpose of a patient-controlled analgesia (PCA) pump?
- AAutomatically adjusts dosage based on pain scale根據疼痛量表自動調整劑量
- BAllows nurses to administer pain medication anytime允許護理師隨時給予止痛藥物
- CPrevents the need for other types of pain medication避免需要其他類型之止痛藥物
- DProvides continuous pain control with patient-led boluses✓ 正解提供持續性疼痛控制並由病人主導之推注給藥
— Explanation · 中文詳解 —
病人自控式止痛（PCA）是一種透過幫浦讓病人依據疼痛感自主按壓給藥的系統。其設計目的在於提供穩定的血中藥物濃度，避免傳統肌肉注射給藥導致的「峰谷效應（Peak and trough effect）」。護理師需設定安全劑量（Lockout interval）以防止過量，並嚴密監測呼吸抑制（Respiratory depression）等副作用。
Patient-controlled analgesia (PCA) is a system that uses a pump to allow the patient to self-administer medication on demand based on perceived pain. It is designed to provide a stable plasma drug level and avoid the peak-and-trough effect of traditional intramuscular dosing. The nurse must set a safe lockout interval to prevent overdose and closely monitor for adverse effects such as respiratory depression.