摘要
血清肿作为腹股沟疝修补术后常见的并发症,由于不同学者对于血清肿理解认知不同,导致报道的腹股沟疝修补术后血清肿发生率差异较大。患者因素、医师的经验以及补片材质、固定方式等均是患者术后形成血清肿的重要原因;在治疗方面,大多数情况下血清肿可无需临床干预即可自行吸收,仅当患者出现严重症状、感染等少数情况下进行临床干预。因此,对于降低围手术期血清肿的发生率仍需以预防为主。笔者就腹股沟疝术后血清肿的研究文献作一综述,以期为临床提供参考。
腹股沟疝作为普外科的常见病与多发病,好发于老年人群,其发病机制主要是腹股沟区的胶原代谢紊乱所导致。随着我国逐渐进入老龄化社会,腹股沟疝的发病率也逐年上升,现阶段我国每年腹股沟疝修补手术150万例左
血清肿一般是指局部的脂肪液、血清液以及淋巴液等聚集在封闭的组织间隙中而形成的无菌性积液,是由水、电解质、中性粒细胞等组成。腹股沟疝的术后血清肿发生部位大多在置入补片和前腹壁之间。血清肿的形成机制可能与以下几个因素有关:⑴ 机体伤口愈合需要血液供应营养等物质,而腹股沟区的局部筋膜组织周围血液供应较正常机体明显减少;⑵ 因术中分离、热能量器械的损伤使手术部位周围组织血液供应破坏;⑶ 患者原有的腹壁张力下降,引起切口周围新生血管回流不畅,渗出液增加。目前对于血清肿的分类沿用2012年欧洲疝年会制定的腹壁疝修补术后血清肿Morales分
血清肿诊断主要靠临床症状、体格检查及影像学资料进行鉴别诊断,其中彩色多普勒超声对于术后血清肿的诊断具有重要作用。但由于超声检查诊断具有很强的主观性,因此,对于血清肿的诊断需要由具有疝外科知识背景的专业彩超医生进行操作,否则易造成误诊或者漏诊。由于早期对于血清肿认识不足,会造成误诊为腹股沟疝复发,而医患在腹股沟疝修补术前可能对于术后血清肿的发生缺乏有效沟通理解,患者心理预期准备不足,血清肿发生后,短期内医师无法通过保守治疗消除症状,可能迫使医师采取激进的措施治疗此类并发症,因此,有因误诊而再次手术的报
早期疝复发主要在术后1年内,包块增大速度较为缓慢,形成的包块多为可复性,而血清肿在术后短时间内即可发现,体积变化明显,包块大多不可回纳,一段时间后会逐渐消退。另外,腹股沟疝术后血清肿有时还需与手术操作引起的血肿相鉴别,血肿的发生大多与患者自身凝血功能障碍、手术操作不当、止血不彻底等因素有关,与血清肿的鉴别诊断主要是血肿穿刺抽吸为暗红色性质液体,但当血肿机化或误穿血管等也会增加鉴别诊断的难度;若临床存在难以鉴别的情况,建议可利用CT、B超以及诊断性穿刺进行区分。
老年患者>75岁、病史较长、嵌顿疝、阴囊疝等是腹腔镜腹股沟疝修补术后血清肿发生的高危因
目前治疗腹股沟疝主要分为开放和腹腔镜两种手术方式。开放腹股沟疝修补术是传统的前入路手术路径,根据笔者医院之前4 678例开放腹股沟疝修补术后并发症统计结
手术操作是影响血清肿发生的另一重要因素,合理规范的手术操作对于降低术后血清肿的发生具有一定意义。对于腹腔镜直疝修补术,目前国内外达成共识,需要关闭假疝囊,减少补片与前腹壁的间
补片的物理形状和补片材质类型是影响血清肿发生的因素。前者主要是指网塞等形状补片,与组织间可能由于死腔的存在发生卷曲或形成帐篷效应,这些遗留间隙是导致血清肿的重要原
补片的固定方式也对血清肿的发生产生影响,不固定补片较固定补片的血清肿发生率低。在补片固定过程中,尽管固定点所产生的炎性反应是无菌性的,但其引起的炎性渗出可能是血清肿形成的重要原因,另外有资
临床常见的血清肿大多为Ⅰ、Ⅱ型,不需要任何临床处理治疗,1周左右即可自行吸收,轻微症状的血清肿可经局部红外线理疗、热敷和中药外敷等无创性治疗方法吸
对于Ⅲ、Ⅳ型血清肿,经定期的临床观察未见明显吸收,甚至出现进行性发展增大的情况应尽早予以积极的临床干预,其中最常用的治疗方法为反复地穿刺抽取积液,但应注意全程操作保持无菌原则,间隔一般1~2 d。对于有条件的单位建议穿刺液送细菌培养,以便后期出现感染时指导临床用药。穿刺后定期复查彩超以评判疗效。在临床实践中当第1次穿刺出脓液时,有时很难判断感染的原因与血清肿或者初期的血肿有关,因此,当早期判断包块为血肿且局部形成张力过大时,应及时手术清除血肿,否则后期容易发展为感染,甚至累及补片,以至需取出补片。另外,对于阴囊疝、术中创面大、手术时间长等容易形成此类血清肿的患者,建议术中常规放置引流管,为避免异物感染术后可早期拔
血清肿的治疗一方面依赖临床医师的经验对患者的不适主诉和体征进行鉴别,判断其是否为血清肿所引起,例如,横断疝囊的阴囊疝患者,有时血清肿会积聚在远端疝囊,形成大小、位置固定的囊性包块。另一方面要充分考虑患者的主观诉求,虽然有时较大的血清肿最终可达到完全吸收的结局,但对于血清肿吸收过程较为缓慢已严重影响患者的日常生活活动的患者也应及时采取临床干预措施,以期提高患者的生活质量。
血清肿作为腹股沟疝无张力修补术后最常见的并发症,随着影像学技术的发展和随访制度的完善,近些年来的检出率逐渐增高。但大多数的血清肿无需进一步的临床干预便可自然吸收,只有严重影响患者生活质量或衍生其他并发症时才需临床治疗。当前对于血清肿主要以预防为主,术前充分评估血清肿的高危因素,与患者进行充分沟通,术中精细操作,仔细辨认解剖结构,合理处置疝囊,术后预防措施得当,缓解患者焦虑情绪等围手术期措施对于改善腹股沟疝患者的预后水平提高生活质量具有重要意义。
利益冲突
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