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星状神经节阻滞(附PPT源文件)

  • 2026-04-04 11:58:08
星状神经节阻滞(附PPT源文件)
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各位医护同仁,大家好!今天我们聚焦临床常用的微创介入治疗技术——星状神经节阻滞(SGB),结合《星状神经节阻滞疗法中国专家共识(2022版)》及最新研究进展,从解剖基础、适应症、禁忌症、操作规范、用药疗程及并发症等方面,全面梳理SGB的临床应用要点,旨在规范操作流程,提升治疗安全性和有效性。

首先我们明确星状神经节(SG)的核心解剖知识。星状神经节是颈交感神经系统的重要组成部分,由颈下神经节与T1神经节融合形成,包含支配头部颈部的交感神经节前纤维,以及支配上肢和心脏的交感神经节后纤维。其位置处于C7颈椎横突和第1肋骨颈的高度,位于C8神经前支前侧、颈长肌外侧缘,肺尖在其前侧,宛如颈部交感神经的“核心枢纽”,调控着头面部、颈部、胸腔、上肢及心脏的血管舒缩、腺体分泌,与睡眠、循环、消化、疼痛感知等系统的平稳运转密切相关。

椎前筋膜是影响SGB效果的关键解剖结构,它是颈深筋膜深层,包绕椎前肌并附着于颈椎椎体和横突,颈交感干走行于椎前筋膜下,SGB的成功与否,核心在于能否在椎前筋膜深层注射适量局麻药,确保药物有效扩散。

接下来讲解SGB的适应症,其应用范围涵盖疼痛性疾病和非疼痛性疾病两大类,且在围手术期也有重要价值。疼痛性疾病包括偏头痛、紧张性头痛、丛集性头痛等各类头痛,复杂性区域疼痛综合征(CRPS)、带状疱疹后神经痛(PHN)、难治性心绞痛、急性术后疼痛(上肢骨科手术、单侧乳房切除术等)、纤维肌痛综合征、面部疼痛、幻肢痛、肩周炎、痛经等;非疼痛性疾病则包括失眠、过敏性鼻炎、创伤后应激障碍、焦虑抑郁等精神疾病,难治性室性心律失常或电风暴(左侧SGB)、颈椎病、更年期潮热、乳腺癌相关淋巴水肿、脑血管痉挛、嗅觉丧失、新冠后遗症、慢性疲劳综合征、雷诺综合征、突发性耳聋、顽固性呃逆、面神经炎、面肌痉挛、美尼尔综合征、周围性面神经麻痹等。

围手术期应用方面,SGB可用于难治性室性心律失常或电风暴(24小时内3次及以上持续性室速或室颤发作),药物和消融治疗无效时可采用双侧部分星状神经节切除术;胸部手术中可预防术后心律失常、减轻胸腔镜术后内脏痛、降低插管应激反应和术后睡眠障碍;心脏手术能减少冠脉搭桥术后高血压、预防术后房颤、提高PaO₂/FiO₂比值;腹部手术可加速肠道功能恢复、调节应激反应、提升术后睡眠质量;还可用于蛛网膜下腔出血(减少脑血管痉挛和新发梗死)、创伤和危重患者(减轻创伤后炎症反应),以及乳腺癌、骨科和头颈部手术(镇痛、减少阿片类药物用量等),需注意不宜与颈部区域手术同台实施。

SGB的禁忌症需严格把控,包括心脏兴奋传导异常、青光眼、局部皮肤感染、患者精神障碍不配合、甲状腺肿大、凝血功能障碍、近期心肌梗死病史等,这些情况均需避免实施SGB,防止引发不良事件。

超声引导下SGB是目前临床首选的操作方式,能显著提高安全性和精准度,具体操作规范如下:

1. 体位:患者仰卧位,头稍偏向对侧,肩下垫薄枕,头稍后仰以显露颈部,微张口放松颈部肌肉。

2. 探头选择:选用体积较小的高频线阵探头,超声频率设置为6~12MHz。

3. 超声扫查:将探头横向置于胸锁乳突肌表面平环状软骨切迹水平,扫查至C6椎体水平,识别C6椎体驼峰状横突前结节、C6神经根、颈总动脉、颈内静脉和颈长肌,SG位于颈长肌表面、椎前筋膜深面,可通过移动探头外侧方清晰显示颈长肌和椎前筋膜,多普勒模式可排查穿刺路径上的血管。

4. 穿刺入路:首选外侧平面内入路,操作更安全精准。

5. 操作方法:在C6椎体水平气管和颈动脉之间,用探头将颈动脉推向一侧,显露C6横突及其前后结节、颈长肌;持22G、5cm短斜面穿刺针,按所选入路进针,超声实时监测下,依次穿过胸锁乳突肌和前斜角肌,进入颈长肌前方、椎前筋膜深面,回抽无血后注入局麻药。

穿刺要点需重点牢记:进针点选在颈六水平和颈外静脉交叉点附近,针需保持笔直,靶点为颈长肌、颈动脉、颈静脉之间的椎前筋膜与颈长肌间隙,依赖药物向尾部扩散至星状神经节;操作中需避开臂丛(前、中斜角肌间隙)、颈脊神经、迷走神经、喉返神经、膈神经(前斜角肌和颈内静脉之间)等5类神经,以及颈血管、椎血管2套血管系统,经前斜角肌肌腹进针最安全。

SGB的作用机制主要包括中枢神经作用和周围神经作用:中枢层面通过调节丘脑,维持植物神经功能、内分泌功能和免疫功能正常;周围层面则抑制阻滞部位的节前和节后纤维功能,进而抑制分布区域交感神经支配的心血管运动、腺体分泌、肌肉紧张、支气管收缩及痛觉传导,实现血管扩张、肌肉放松等治疗效果。

用药与疗程方面,常用局麻药为1%利多卡因、0.25%布比卡因,剂量5~10ml,不建议加入糖皮质激素、非甾体类抗炎药、维生素(甲钴胺)等药物;疗程通常为隔日或每日一次,双侧交替阻滞,10次为一个疗程,避免同时阻滞双侧SG,防止呼吸、循环系统不良事件。

治疗后常见同侧霍纳氏综合征(颈交感神经麻痹综合症),表现为眼睑轻微下垂、瞳孔暂时性缩小、同侧面部少汗或无汗、结膜轻微充血、颜面潮红、皮肤温度升高,这是药物作用于交感神经的正常反应,提示阻滞成功,通常几小时内可自行消退,无需特殊处理。

并发症需警惕并做好预防:一是声音嘶哑或失音,多因喉返神经阻滞,与进针位置过浅或患者吞咽改变针尖位置有关,需避免双侧同时阻滞;二是臂丛阻滞,表现为手臂麻木,一般无需处理,密切观察即可;三是高位硬膜外或蛛网膜下腔阻滞,为最危急并发症,可能导致全脊椎麻醉,需立即气管插管建立人工通气、升压维持循环;四是局部红肿、血肿、感染;五是局麻药相关反应,误入血管可能引发烦躁、心慌、呼吸抑制等,少量吸收入血可出现头晕、耳鸣、寒颤;六是心律失常,操作时需心电监护,注意双侧SGB对心脏调节的不对称性(右侧主导心率调控,左侧主导心室收缩功能);七是迟发性气胸,需术后密切监测。

星状神经节阻滞是一项精准度要求较高的微创技术,其核心在于熟悉解剖结构、严格把控适应症和禁忌症、规范超声引导下操作流程、警惕并发症。临床应用中,需结合患者具体病情个体化制定治疗方案,才能充分发挥其在疼痛管理、非疼痛疾病治疗及围手术期干预中的重要作用。希望通过今天的宣讲,大家能进一步掌握SGB的临床应用要点,为患者提供更安全、有效的治疗服务。

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  1. CONNECT:[ UseTime:0.000548s ] mysql:host=127.0.0.1;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000830s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000304s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000261s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000698s ]
  6. SELECT * FROM `set` [ RunTime:0.000278s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000968s ]
  8. SELECT * FROM `article` WHERE `id` = 484504 LIMIT 1 [ RunTime:0.000477s ]
  9. UPDATE `article` SET `lasttime` = 1775442397 WHERE `id` = 484504 [ RunTime:0.003259s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000397s ]
  11. SELECT * FROM `article` WHERE `id` < 484504 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000601s ]
  12. SELECT * FROM `article` WHERE `id` > 484504 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000519s ]
  13. SELECT * FROM `article` WHERE `id` < 484504 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.013424s ]
  14. SELECT * FROM `article` WHERE `id` < 484504 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.010552s ]
  15. SELECT * FROM `article` WHERE `id` < 484504 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001847s ]
0.105624s