推荐回答(1个)
急性胰腺炎是由于胰酶激活后引起胰腺组织自身消化的急性化学性炎症。常见原因有胆结石、胆道寄生虫、肿瘤、感染、酗酒及暴饮暴食,某些全身性感染(如传染性肝炎、流行性肋腺炎、伤寒、败血症)和其他一些疾病(如甲状旁腺功能亢进、家族性高脂血症、糖尿病、尿毒症、腹部外伤手术)和妊娠等。
(1)临床表现 急性胰腺炎临床上分为两型:
1)间质水肿型 突起在上腹或上腹正中部持续性刀割样或绞痛、刺痛,呈阵了性加剧,多向左腰前部放射;疼痛以平卧位或进食后明显,常伴恶心呕吐和中等度发热(38-39℃);检查上腹部有压痛,可有轻度腹肌紧张和反跳痛。病情不发展者一般3-5天后疼痛等症状逐渐好转。
2)出血坏死型 除上述表现外,还有如下特点:①全腹剧痛、腹肌紧张和压痛、反跳痛;②低血容最性休克;③血性腹水落石出和胸腔积液;④季肋部和脐周皮肤上出现紫斑;⑤中毒性肠麻痹和多器官损害;⑥低钙抽搐。
(2)实验室检查 有一定诊断价值。
1)血清淀粉酶 超过500单位(Somogyi)可确诊,但其高低与病情严重程度并非完全一致,如出血坏死型升高不一定明显。
2)尿淀酶粉 超过128单位(Winlson)有诊断意义。
3)血清正铁蛋白 阳性可确诊为出血坏死型,血钙除低程度与出血坏死程度一致。
4)血清脂肪酶 超过1.5单位可作为较晚期病程的诊断。
(3)影像学检查 B超和CT可见胰腺肿大、不规则及密度减低。
(4)治疗 急性胰腺炎原则上先内科治疗,无效时再行外科手术治疗。
1)间质水肿型 ①轻者进流质饮食,缓解后逐渐恢复饮食,较重者应禁食并上胃管持续抽吸胃液,同时每天补液2000-3000毫升以维持水及电解质平衡;②减少和抑制胰腺分泌和止痛,可皮下或肌内注射阿托品0.5毫克或山莨菪碱10毫克,每6-8小时重复1次,必要时肌内注射哌替啶50-100毫克;③或善得定:每次0.1毫克,皮下注射,6-8小时重复使用1次,每天总量为0.3-0.6毫克;④防治感染可选用青霉素、羟氨苄青霉素、庆大霉素、头孢菌素等。
2)出血坏死型 ①按上述处理;②迅速输液、输血或血浆以补充血容量,短期内大剂量静脉滴注氢化可的松500-1000毫克或地塞米松25-50毫克,并酌情选用血管活性药物和碱性药物;③对症处理,如用胰岛素降低高血糖,用10%葡萄糖酸钙纠正低血钙,气管插管加正压辅助呼吸治疗呼吸窘迫综合征,早期使用肝素、抗血小板聚集药物防治弥温性血管内凝血等;④若病情继续恶化,黄疸加深,脓肿形成,有严重消化道出血和内脏穿孔,以及明显的急性腹膜炎和肠麻痹征象等明应行外科手术治疗
什么是低钙血症和低镁血症
血清Ca++低于2mmol/L时,称为低钙血症。血清Mg++低于0.75mmol/L时,称为低镁血症。他们常互相影响,可同时发生。
什么原因引起低钙血症和低镁血症
常见于急性胰腺炎、甲状旁腺功能受损害,长期肠瘘、胆瘘等。临床上并非少见,逐渐引起人们注意。低镁、低钙血症临床表现相似,主要为神经、肌肉的兴奋性增强。两者不易区别,测定血清Ca+、Mg+可确定诊断。
低钙血症和低镁血症有什么症状
容易激动、焦急、谵妄,肌肉抽动,手足搐搦。
低钙血症和低镁血症需要做哪些检查
1.耳前叩击试验(chrostek征)和上臂压迫试验(Trousseau征)阳性。
2.血清钙低于2mmol/L,血清镁低于0.75mmol/L。
如何治疗
1.处理原发病。
2.补充钙剂或镁剂。低钙血症治疗宜补充钙剂,但对手足搐搦病人注入钙剂后不见好转者,应想到低镁血症的可能。低钙和低镁血症常与其他电解质的紊乱同时存在,应同时纠正。
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