分析腹痛病因时要考虑哪些问题?

2025-02-23 13:53:18
推荐回答(2个)
回答1:

(1)腹痛部位和压痛点往往相当于病变器官的部位。

上腹痛。消化性溃疡:典型的消化性溃疡腹痛具有慢性、周期性、节律性与饮食关系密切等特点。疼痛和压痛一般在中上腹部。消化性溃疡活动期可有持续性剧痛。后壁穿透性溃疡可有后背部放射痛;胆囊炎和胆石症:右上腹疼痛,并可放射至右肩部。在胆囊部位有压痛,也可有腹肌痉挛。胆囊炎的疼痛多呈持续性,而胆石症者多呈绞痛样;胆道或肠道蛔虫症:多见于儿童,成人也可发生。胆道蛔虫症的疼痛多在上腹部剑突下,常呈突然发作的、阵发性加剧的绞痛,并可有钻顶感,疼痛间歇期可完全不痛。肠蛔虫症的疼痛性质与胆道蛔虫症相似,但多位于脐部。二者均可有呕吐,有时还可呕出蛔虫。粪检多可检到蛔虫卵;胰腺炎:急性胰腺炎呈剧烈而持续性疼痛,常可放射至背部。体检时在中上腹或偏左部位有压痛,并可有腹膜刺激征。常伴有发热、恶心、呕吐和血液白细胞计数和中性粒细胞增高。血清淀粉酶检测有助于确诊;急性胃炎和急性胃肠炎:常伴有频繁呕吐,上腹疼痛随呕吐而减轻;急性胃肠炎则多伴腹泻,并有不洁饮食史;肝炎、肝脓肿、肝癌和充血性心力衰竭时,肝脏迅速增大,肝包膜被扩张,可引起持续性右上腹疼痛及肝区叩触痛。

脐周或全腹痛以肠道病变最多见。急性肠炎或胃肠炎:呈绞痛样,常伴有呕吐和腹泻;肠梗阻:可由肠蛔虫症、肠套迭、嵌顿性疝、肠粘连、肠扭转和肠肿瘤等引起。以腹痛为主要临床表现,常呈绞痛,并伴恶心和呕吐;腹膜炎:各种原因所致的弥漫性腹膜炎均有全腹持续性锐痛,稍咳嗽或震动均可使腹痛加剧。此外,可有腹胀、腹肌强直、腹壁压痛和反跳痛,以及迅速出现的休克征象;腹腔内出血:主要原因有宫外孕、肝脾破裂等。腹痛常骤然发生,并自出血部位起向全腹扩展,呈持续性胀痛,多伴急性失血症状和腹部进行性膨胀、弥漫性压痛等;结核性腹膜炎:其腹痛常较轻,但发生肠粘连时和部分性肠梗阻时,也可有剧痛,腹壁可有柔韧感及压痛,且常伴有长期发热、体重减轻等症状和其他部位的结核病灶(如肺结核和生殖道结核等)。

下腹痛。急性阑尾炎:往往先有上腹部和脐周痛,以后转向右下腹痛,疼痛呈持续性而有阵发性加剧。阑尾部位有压痛,局部炎症严重或有穿孔时,可有反跳痛和腹肌紧张;宫外孕:停经1~2个月以上的育龄妇女,突然出现一侧下腹部剧痛,并迅速出现腹腔内出血现象;急性输卵管炎:表现为下腹疼痛、发热、耻骨上两侧均有压痛及反跳痛,血白细胞计数和中性粒细胞增高,阴道分泌物增多。常见于流产或产后。妇科检查可以确诊;卵巢囊肿扭转:病人可突然有一侧阵发性下腹剧痛,持续较久,并可在患侧下腹部发现压痛及反跳痛,伴发热,有时尚可扪及肿块。妇科检查可查到囊肿;急性或慢性结肠炎:疼痛及压痛多局限于下腹部,常伴有腹泻;急性膀胱炎或膀胱结石:在排尿时有耻骨上区疼痛,并向外生殖器放射。前者常伴有尿频、尿急,尿液检查可见白细胞增多,后者则见肉眼血尿或尿检发现红细胞增多。

侧腹痛。肾结石时常有突然发作的剧烈绞痛,自一侧腰部沿输尿管向膀胱和外生殖器放射。同时可伴有恶心、呕吐、血尿等症状。在急性肾盂肾炎时也可有类似症状,但常伴有发热。

(2)腹痛性质和程度。阵发性绞痛者往往表示腹腔内空腔脏器的痉挛,如急性肠炎、胆囊炎等。持续性疼痛者往往表示腹腔内实质性脏器的病变,如肝脓肿、腹膜炎。持续性剧痛伴阵发性加剧者,多为炎症伴管道痉挛或结石嵌顿,如胰腺炎、胆石症等。

(3)放射痛。胆囊及横膈病变常放谢至右肩部;肾脏病变向腰背部放射;输尿管病变向耻骨上及外生殖器放射;胰腺病变则向背部放射。

(4)伴随症状。如泌尿系统疾病常伴有血尿、尿频、尿急;肝胆系统疾病常伴有黄疸;内脏出血时往往伴有休克;急性炎症则常伴有发热及血液白细胞和中性粒细胞增高等。

腹痛常是各种重危疾病的共同症状,一旦发生应及时就医,切莫乱服止痛药而耽误病情。如果腹痛尚能耐受时,应尽可能在作出初步诊断后,根据不同病因选用止痛药物。如果腹痛难以耐受者,可先用针灸疗法或注射阿托品解痉。在诊断未确定前,一般应禁用吗啡、度冷丁等麻醉药,以免掩盖病情,腹痛伴反复呕吐、腹泻者,应适当补充液体。部分病人在腹痛早期就诊时,典型症状和体征可能尚未出现,需要经一定时间的观察方可确诊,所以必须严密观察和随访。当腹痛缓解后,病人准备回家休息时,仍必须与医生保持联系,以便继续观察病情变化。

回答2:

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