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第129章 断更通知!(1 / 2)

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很抱歉断更,因为我最近在修文,但是断更了就不能修文了。所以我来水一章,请大家见谅!非常抱歉!不用看下去了!

1. 该患儿是何种疾病?

- 患儿可能患有苯丙酮尿症(PKU)。依据为患儿头发黄、抽搐、发育迟缓、汗液和尿液有鼠臭味,且血液中苯丙氨酸浓度显着升高,苯丙氨酸和酪氨酸比值异常等实验室检查结果。

2. 第一组问题

- 临床诊断标准:新生儿期筛查,采用Guthrie细菌生长抑制试验或串联质谱法测定血苯丙氨酸浓度,若血苯丙氨酸浓度持续高于正常参考值(>120μmol/L),同时血酪氨酸正常或稍低,需进一步确诊。较大婴儿和儿童可根据临床表现(如头发黄、皮肤白、智力发育落后、抽搐、鼠尿臭味等)及血苯丙氨酸升高来诊断,同时需排除其他原因导致的高苯丙氨酸血症。

- 近亲婚配与患病风险:近亲婚配能使后代患该病的风险显着增加。因为苯丙酮尿症是常染色体隐性遗传病,近亲结婚时,夫妻双方携带相同隐性致病基因的概率增加,后代从父母双方获得隐性致病基因而发病的可能性增大。

3. 第二组问题

- 分子遗传学诊断标准:通过基因检测确定致病基因突变,常见的如PAH基因等突变。我国已开展新生儿疾病筛查,对PKU患儿进行早期诊断和干预。但仍存在一些问题,如部分地区筛查覆盖率有待提高,不同地区筛查质量存在差异;确诊患儿的后续规范治疗和随访管理水平参差不齐,部分患儿难以长期坚持特殊饮食治疗;对于新型治疗方法的研发和应用相对滞后,难以满足临床需求等。

4. 第三组问题

- 鉴别诊断疾病:需与四氢生物蝶呤缺乏症(BH4缺乏症)、其他原因导致的继发性高苯丙氨酸血症(如肝脏疾病等影响苯丙氨酸代谢)、脑白质营养不良(如肾上腺脑白质营养不良等,可伴有神经系统症状及发育迟缓,但有其特征性影像学表现等)、先天性甲状腺功能减低症(可出现智力发育落后、生长迟缓等,但有甲状腺功能异常等表现)等鉴别。

- 民间互助措施及相关情况:民间有一些患者组织或公益团体,通过举办科普活动提高公众对PKU的认识,组织家长交流经验,在一定程度上缓解了患儿家庭的心理压力,增强了家长对患儿管理的信心。然而,民间互助力量相对薄弱,资金有限,难以开展大规模的救助活动和深入的科研支持;在整合社会资源方面存在困难,无法为患儿提供全面系统的帮助;缺乏专业的指导和规范管理,可能导致部分互助活动效果不佳。

5. 第四组问题

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