临床药师肝转移癌痛患者的药学监护1例

2019-10-28 孟文爽 王曙照 北京医学

患者女,67岁,因“纳差1年余,发现肝占位3个月余,恶心呕吐3d”于2017年8月13日入院。体重58kg,身高164 cm。1年前无明显诱因出现纳差,胸背部疼痛,未治疗。4个月前发现肝转移癌,3个月前胸背部疼痛无明显诱因加重,间断服用氨酚羟考酮5mg每6h1次控制疼痛,并行肝动脉导管化疗栓塞术1次,术后稳定出院。3d前无明显诱因恶心、呕吐,无法进食,就诊于我院急诊,为行进一步诊治收入肿瘤介入科。

患者女,67岁,因“纳差1年余,发现肝占位3个月余,恶心呕吐3d”于2017年8月13日入院。体重58kg,身高164 cm。1年前无明显诱因出现纳差,胸背部疼痛,未治疗。4个月前发现肝转移癌,3个月前胸背部疼痛无明显诱因加重,间断服用氨酚羟考酮5mg每6h1次控制疼痛,并行肝动脉导管化疗栓塞术1次,术后稳定出院。3d前无明显诱因恶心、呕吐,无法进食,就诊于我院急诊,为行进一步诊治收入肿瘤介入科。
 
辅助检查:入院时(8月13日):中性粒细胞67.8%,WBC10.32×109/L,RBC3.7×1012/L,Hb118g/L;ALT16.4U/L,AST26.5U/L,BUN9.6mmol/L,Cr48.5mmol/L;疼痛评估,视觉模拟评分(visual analogue scale,VAS)评分6分。动脉造影示肝动脉其固有动脉、左中肝动脉及分支显影,右肝多发肿瘤染色灶。
 
入院诊断:肝转移癌胰腺癌肝动脉导管化疗栓塞术、肝小囊肿、双肾小囊肿。入院以来,患者胸背部疼痛,伴恶心、呕吐,精神、饮食差,睡眠可,小便正常,偶有便秘,体重无明显变化。8月13日,疼痛性质为肝转移癌相关性疼痛,VAS评分6分,药师对患者既往用药详细询问,患者自3个月前间断服用氨酚羟考酮5mg控制疼痛,判断患者为阿片未耐受。
 
考虑目前为中重度疼痛,建议使用盐酸羟考酮缓释片20mg,每12h1次,为背景进行剂量滴定,发生爆发性疼痛时,应立即给予盐酸吗啡片10mg进行解救。同时,考虑到便秘是阿片类药物最常见的不良反应,建议给予乳果糖口服溶液30ml,1次/d。患者恶心、呕吐,给予盐酸托烷司琼注射液5mg,1次/d治疗。16:10,患者发作爆发性疼痛1次,VAS评分7分,给予盐酸吗啡片10mg后缓解。
 
8月14日,VAS评分4分,药师建议调整滴定背景剂量为盐酸羟考酮缓释片30mg,每12h1次,发生爆发性疼痛时,立即给予盐酸吗啡片15mg进行解救;11:49和16:18分别发作一次爆发性疼痛,疼痛评分7分,给予盐酸吗啡片15mg后缓解。8月15日,VAS评分4分,药师建议调整滴定背景剂量为盐酸羟考酮缓释片60mg,每12h1次,发生爆发性疼痛时,立即给予盐酸吗啡片25mg进行解救;患者无爆发性疼痛发作。8月16日,VAS评分4分,药师建议调整滴定背景剂量为盐酸羟考酮缓释片80mg,每12h1次,发生爆发性疼痛时,立即给予盐酸吗啡片30mg进行解救;患者无爆发痛发作,恶心、呕吐症状缓解。
 
8月17日,VAS评分1分,继续当前治疗方案。8月22日,患者行碘佛醇注射液35g联合注射用盐酸吉西他滨0.8g肝动脉导管化疗栓塞术,术后安返病房,VAS评分1分,继续目前治疗方案。8月17日后,患者疼痛控制良好,未再发作爆发痛;8月22日行肝动脉导管化疗栓塞术后,肿瘤血管支闭塞。8月24日,患者一般状况良好,准予出院。
 
讨论
 
疼痛是癌症患者最常见的症状之一,严重影响癌症患者的生活质量,WHO将疼痛确定为继血压、呼吸、脉搏、体温之后的“第五大生命体征”。癌症疼痛如果得不到缓解,将会严重影响患者的日常活动、自理能力、交往能力及整体生活质量。因此,在仔细评估疼痛的类型和原因后,需要适当治疗。目前,主要使用阿片类镇痛药物控制中重度癌痛,由于个体差异,阿片类药物无标准用药剂量,需要根据患者病情,使用足够剂量药物才能使疼痛得到缓解。
 
本研究记录临床药师对1例肝转移癌痛患者的药学监护,分析药物选择、通过药物滴定调整剂量和不良反应的监测,探讨临床药师如何从预防、发现、解决潜在或实际存在的用药问题方面协助医师,从用药依从性、安全性、适应证、有效性等方面帮助患者。
 
1)疼痛筛查预评估:所有住院患者入院后2h内应完成疼痛筛查,确定为有疼痛存在的患者,8h内完成疼痛评估,并区分是否为阿片类药物耐受患者。本例为癌痛患者,VAS评分6分,既往未规律服用阿片类药物,为阿片类药物未耐受患者。
 
2)疼痛治疗管理:VAS评分≥4分,可使用短效阿片类药物或以长效阿片类药物为背景完成剂量滴定,选择强阿片类药物起始剂量时,应区分阿片类药物未耐受和耐受患者。在使用长效类阿片药物镇痛过程中,出现爆发性疼痛的处理应使用纯阿片受体激动剂,给予24h背景给药剂量的10%~20%。本例患者肝转移癌胰腺癌相关性疼痛诊断明确,VAS评分6分,阿片类药物未耐受。因此,药师建议给予盐酸羟考酮缓释片20mg,每12h1次为背景。爆发性疼痛是指在稳定疼痛、服用阿片类镇痛药物的基础上,出现的短暂而剧烈的疼痛。本例患者在使用盐酸羟考酮缓释片进行剂量滴定期间,多次出现爆发性疼痛,药师根据前24h药物剂量为患者计算解救剂量,患者于72h后疼痛缓解。
 
3)不良反应监护:阿片类药物最常见的不良反应为便秘,且通常会持续发生于阿片类药物镇痛治疗的全过程,不因镇痛药物使用时间延长而缓解,本例患者在使用盐酸羟考酮缓释片镇痛的同时,给予乳果糖口服溶液(30ml,1次/d)预防便秘,住院期间未出现相关不良反应。
 
原始出处:

孟文爽,王曙照.临床药师肝转移癌痛患者的药学监护1例报告[J].北京医学,2018(10):1005-1006.

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    2019-10-30 bioon6

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