全身麻醉药物是通过作用于哪些关键靶点产生意识消失的？
Which key targets do general anesthetics act on to produce loss of consciousness?
多数静脉与吸入麻醉药增强抑制性GABA_A受体功能，使神经元过度抑制；部分药物（如氯胺酮）则抑制兴奋性NMDA受体。通过调节这两类离子通道改变中枢神经网络同步性，从而产生意识消失与遗忘。不同药物组合可平衡镇静、镇痛与肌松需求。
Most intravenous and inhaled agents enhance inhibitory GABA_A receptor function, hyperpolarizing neurons; some (e.g., ketamine) inhibit excitatory NMDA receptors. Modulating these ion channels alters central network synchrony, yielding unconsciousness and amnesia. Combinations balance sedation, analgesia, and muscle relaxation.
难度 专业 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《麻醉学》（邓小明、姚尚龙主编，第4版），人民卫生出版社
Anesthesiology (Deng Xiaoming & Yao Shanglong, 4th ed.), People's Medical Publishing House
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787117096799（豆瓣书目条目: 麻醉学）
#全身麻醉 #GABA_A #NMDA
脓毒症当前是如何定义和快速筛查的？
How is sepsis currently defined and rapidly screened?
脓毒症被定义为因感染引起的宿主反应失调导致的器官功能障碍，常用序贯器官衰竭评分（SOFA）确认。床旁快速筛查可用qSOFA：呼吸≥22次/分、意识改变、收缩压≤100 mmHg中具备两项即提示高危。治疗核心是早期抗感染、液体复苏与器官支持。
Sepsis is life-threatening organ dysfunction from a dysregulated host response to infection, confirmed by the SOFA score. Bedside screening uses qSOFA—respiratory rate ≥22/min, altered mentation, or systolic BP ≤100 mmHg, with two of three flagging high risk. Care centers on early antibiotics, fluid resuscitation, and organ support.
难度 专业 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
拯救脓毒症运动(Surviving Sepsis Campaign)《脓毒症与脓毒性休克国际指南（2021）》
Surviving Sepsis Campaign. International Guidelines for Sepsis and Septic Shock, 2021
#脓毒症 #SOFA #qSOFA
现场处理外出血的基本原则是什么？
What are the basic principles for managing external bleeding at the scene?
控制外出血首选直接压迫止血，用干净敷料持续按压出血点；四肢严重出血在压迫无效时可使用止血带并标注时间。同时保护伤口、避免污染并尽快转送。一般不建议随意使用止血粉或拔除刺入异物。
The first step for external bleeding is direct pressure with a clean dressing over the site; for severe limb bleeding unresponsive to pressure, a tourniquet may be applied with the time marked. Protect the wound, avoid contamination, and transfer promptly. Random hemostatic powders or pulling out impaled objects are generally discouraged.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录仅给书名，无版次与年份；同一书名常对应多个版次，不臆测具体版本。
美国外科医师学会(ACS)《高级创伤生命支持(ATLS)手册》
American College of Surgeons (ACS). Advanced Trauma Life Support (ATLS) Manual
#止血 #压迫 #止血带
局部麻醉与神经阻滞在原理上有何不同？
How do local anesthesia and nerve block differ in principle?
局部麻醉是将局麻药直接注射于手术部位周围组织，可逆性阻断末梢神经纤维的钠通道。神经阻滞则是把药物精准注射到神经干或神经丛周围，使更大区域暂时失去痛觉。两者都保留患者意识，常用于门诊和小手术。
Local anesthesia injects agent into tissue around the site, reversibly blocking sodium channels in peripheral nerve endings. A nerve block delivers drug around a nerve trunk or plexus to numb a larger region. Both preserve consciousness and suit outpatient and minor procedures.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-02
来源 · Source
《麻醉学》（邓小明、姚尚龙主编，第4版），人民卫生出版社
Anesthesiology (Deng Xiaoming & Yao Shanglong, 4th ed.), People's Medical Publishing House
独立核验依据 · Independent verification: 核验依据 1 ISBN 9787117096799（豆瓣书目条目: 麻醉学）
#局部麻醉 #神经阻滞 #钠通道
加速康复外科（ERAS）对术前禁食有何新观点？
What is the enhanced recovery after surgery (ERAS) view on preoperative fasting?
传统要求长时间禁食，而ERAS主张在择期手术前2小时仍可饮澄清液体、术前6小时可进清淡固体食物，以减少饥饿脱水和胰岛素抵抗。清饮料不含残渣、快速胃排空，并不显著增加误吸风险。具体仍须遵从麻醉医师的个体化评估。
Traditionally patients fasted long; ERAS allows clear liquids until 2 hours and light solids until 6 hours before elective surgery, reducing hunger, dehydration, and insulin resistance. Clear fluids are residue-free and empty quickly, without markedly raising aspiration risk. Individual anesthesia assessment still governs.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录仅给书名，无版次与年份；同一书名常对应多个版次，不臆测具体版本。
中华医学会外科学分会《中国加速康复外科(ERAS)临床指南》
Chinese Society of Surgery. Chinese ERAS Clinical Guidelines
#ERAS #术前禁食 #加速康复
术后恶心呕吐（PONV）的常见危险因素与预防思路是什么？
What are common risk factors and preventive approaches for postoperative nausea and vomiting (PONV)?
PONV危险因素包括女性、非吸烟、晕动史、阿片类用药和长时间手术等。预防采用风险分层，联合不同机制药物（如5-HT3拮抗剂、地塞米松、抗组胺药）而非单药加量。一般建议高危者术前即开始多模式预防。
PONV risk factors include female sex, nonsmoking, motion sickness history, opioid use, and longer surgery. Prevention is risk-stratified, combining agents of different mechanisms (e.g., 5-HT3 antagonist, dexamethasone, antihistamine) rather than escalating one drug. High-risk patients are generally started on multimodal prophylaxis before surgery.
难度 进阶 · 适合 高中(15-18)
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
Gan TJ等，《术后恶心呕吐管理第四版共识指南》，麻醉与镇痛(Anesth Analg) 2020;131(2):411-448
Gan TJ, et al. Fourth Consensus Guidelines for the Management of Postoperative Nausea and Vomiting. Anesth Analg. 2020;131(2):411-448
#PONV #术后恶心呕吐 #多模式预防
外科「无菌术」的核心目的是什么？
What is the core purpose of aseptic technique in surgery?
无菌术通过洗手消毒、穿戴无菌衣手套和器械灭菌等措施，防止微生物进入手术创口。它是预防手术部位感染的基础，与抗菌治疗不同，重在「不让细菌进入」而非「进入后杀灭」。一般需严格遵守操作流程并区分清洁区与污染区。
Aseptic technique—hand antisepsis, sterile gowns and gloves, and instrument sterilization—prevents microorganisms from entering the wound. It is the foundation of preventing surgical site infection and, unlike antibiotics, aims to keep bacteria out rather than kill them after entry. Strict protocols separate clean from contaminated areas.
难度 进阶 · 适合 大众
CC BY 4.0 · 来源待核验 · Source pending review
来源 · Source
出处备注：著录含书名，但缺版次 / 出版社 / 年份中的一部分，需编辑补全后才能做独立比对。
世界卫生组织(WHO)《手术部位感染预防全球指南（第2版）》，日内瓦，WHO，2018
World Health Organization. Global Guidelines for the Prevention of Surgical Site Infection, 2nd ed. Geneva: WHO, 2018
#无菌术 #灭菌 #手术感染
家族中有恶性高热病史的患者接受手术时,麻醉需要避开哪些药物,一旦发作的首选抢救药是什么?
For surgery on a patient with a family history of malignant hyperthermia, which anesthetic drugs must be avoided, and what is the first-line rescue medication?
恶性高热源于RYR1基因突变引起的骨骼肌肌浆网钙释放失控,挥发性吸入麻醉剂和去极化肌松药琥珀胆碱是最强诱因,须全程避免。发作表现为呼气末二氧化碳骤升、心动过速、酸中毒和体温快速上升,处理要点是立即停用触发剂并静脉输注丹曲林。术前还应准备无污染的呼吸回路并落实术后监护。
Malignant hyperthermia arises from RYR1 mutations that unleash sarcoplasmic reticulum calcium release in skeletal muscle; volatile anesthetics and succinylcholine are the most potent triggers and must be avoided entirely. An attack features a sharp rise in end-tidal carbon dioxide, tachycardia, acidosis, and rapid heating, and hinges on immediately stopping triggers while infusing dantrolene intravenously. A clean breathing circuit and postoperative monitoring should be arranged beforehand.
难度 进阶 · 适合 初中(12-15)
CC BY 4.0 · 已核验 · Verified 2026-11-04
来源 · Source
北美恶性高热小组(MHAUS)急性危象处置流程；Larach, Brandom, Allen & Gronert,《Cardiac Arrests and Deaths Associated with Malignant Hyperthermia in North America from 1987 to 2006》,Anesthesiology,2008 (DOI: 10.1097/aln.0b013e318167aee2)
MHAUS healthcare professional resources, acute MH crisis protocol; Larach, Brandom, Allen & Gronert, 'Cardiac Arrests and Deaths Associated with Malignant Hyperthermia in North America from 1987 to 2006', Anesthesiology, 2008, DOI: 10.1097/aln.0b013e318167aee2
独立核验依据 · Independent verification: 核验依据 1 Crossref DOI 10.1097/aln.0b013e318167aee2
#恶性高热 #丹曲林
腰麻或腰穿后的头痛为什么站立时加重、平卧后缓解?
Why does post-dural puncture headache worsen on standing and improve when lying flat?
硬脊膜穿刺孔使脑脊液持续漏出,直立位时脑组织失去浮力支撑而向下牵拉痛敏结构,产生体位性枕额部头痛;平卧后漏出与生成重新平衡,症状随之减轻。多数患者经补液、咖啡因和卧床在数天至两周内自愈。顽固病例可行硬膜外自体血补片,将患者自身血液注入硬膜外腔封闭漏口。
The dural puncture site lets cerebrospinal fluid keep leaking; upright, the brain loses buoyant support and traction on pain-sensitive structures produces a positional occipitofrontal headache, while lying flat rebalances leak and production and relieves it. Most patients recover within days to two weeks with fluids, caffeine, and bed rest. Refractory cases are treated with an epidural blood patch, in which the patient's own blood is injected into the epidural space to seal the leak.
难度 进阶 · 适合 大众
CC BY 4.0 · 已核验 · Verified 2026-08-23 · 2 条独立证据
来源 · Source
陈孝平 汪建平 主编,《外科学》第9版,人民卫生出版社,2018
Chen Xiaoping and Wang Jianping eds., Surgery, 9th ed., PMPH, 2018
独立核验依据 · Independent verification: 核验依据 2 ISBN 9787117266390（豆瓣书目条目: 外科学）
#硬膜穿刺后头痛 #椎管内麻醉