一位25歲患有嚴重思覺失調症的男性，近期開始了高劑量的第一代抗精神病藥物氟哌啶醇 (Haloperidol) 療程。在住院的第 5 天，護理師發現他呈現急性的意識改變且無反應。他的肌肉展現出駭人的『鉛管樣』極度僵硬，使得彎曲他的四肢變得完全不可能。生命徵象揭露其血壓猛烈波動至 200/120 mmHg、心跳過速高達 135 次/分、大量冒冷汗，以及溫度危險猛爆性地飆升至 41.0°C。護理師必須立刻懷疑發生了哪種由精神科藥物誘發、致命的醫療急症？
A 25-year-old male with severe Schizophrenia was recently started on a high-dose regimen of the first-generation antipsychotic Haloperidol (Haldol). On day 5 of hospitalization, the nurse finds him acutely altered and unresponsive. His muscles are exhibiting terrifying 'lead-pipe' rigidity, making it impossible to bend his limbs. Vital signs reveal a violently fluctuating blood pressure of 200/120 mmHg, a tachycardic heart rate of 135 bpm, profuse diaphoresis, and a dangerously explosive temperature spike hitting 41.0°C (105.8°F). What lethal, drug-induced medical emergency must the nurse immediately suspect?
- AExtrapyramidal Symptoms (EPS) of Acute Dystonia需要出院衛教的病人
- BMalignant Hyperthermia (MH)要求補充水瓶水的病人
- CSerotonin Syndrome主訴胸痛的病人
- DNeuroleptic Malignant Syndrome (NMS)✓ 正解有預定傷口換藥的病人
本題測驗精神科藥理中最令人聞之色變的致死急症：抗精神病藥惡性症候群（Neuroleptic Malignant Syndrome, NMS）。當給予抗精神病藥物（特別是第一代典型的 Haloperidol）時，大腦多巴胺受體的過度阻擋偶爾會觸發這場災難。NMS 擁有極具特異性的標誌，通常被總結為：令人難以置信的超高燒（Hyperpyrexia > 40°C）、自律神經系統徹底崩盤失控（血壓心跳狂飆、流汗）、意識錯亂，以及最核心的物理表徵——『強烈的鉛管般肌肉僵直 (Lead-pipe rigidity)』。這些極端肌肉收縮會導致肌肉細胞溶解（橫紋肌溶解症），釋放肌紅蛋白並堵死腎臟，致死率極高（選項D正確）。選項B惡性高熱 (Malignant Hyperthermia) 雖然徵狀極相似（高燒與僵硬），但它『只會』發生在全身麻醉氣體或給予肌肉鬆弛劑 (Succinylcholine) 期間的手術室中。選項C血清素症候群 (Serotonin Syndrome) 的肌肉表現是『過度反射的抽搐與發抖 (Hyperreflexia/Tremors)』，而非僵硬的鉛管。選項A急性的 EPS (錐體外症候群，如急性肌張力不全) 只會有肌肉痙攣（如脖子歪斜），『絕對不會』出現高達 41 度的致命致死性高燒。
Neuroleptic Malignant Syndrome (NMS) is a life-threatening reaction to antipsychotics like haloperidol, characterized by hyperpyrexia, altered mental status, autonomic instability, and severe 'lead-pipe' muscle rigidity. Unlike malignant hyperthermia, which is triggered by anesthesia, or serotonin syndrome, which presents with hyperreflexia, NMS is specifically associated with dopamine blockade and requires immediate intervention.
「NMS = 高燒 + 鉛管僵直 + 精神藥物」與「MH = 高燒 + 肌肉僵直 + 麻醉氣體」，這兩者的比較是各國重症護理與精神科護理考試最喜歡玩的陷阱。