Thorax:肺清除指数可用于监测囊性纤维化的疾病进展 

2021-12-06 小文子 MedSci原创

大多数肺功能良好的CF患者随着时间的推移表现出稳定的LCI。

肺清除指数(LCI)是囊肿性纤维化(CF)的有价值研究工具,但临床应用受到技术挑战和解释纵向变化不确定性的限制。Thorax杂志的一项研究评估重复LCI测量在CF门诊监测中的可行性、可接受性和临床价值;评估以轻度疾病为主的临床稳定型CF患者的短期重复性;评估CF患者LCI的长期轨迹,并确定加速下降的危险因素。

针对儿童(≥5岁)和成人CF患者进行的前瞻性、单盲、多中心、观察性研究,纳入英国三个专科医学中心的CF患者,且FEV1>50%。对CF>5年的患者进行重复LCI测量,使用快速洗脱系统给药。

研究纳入122例儿童和成人CF 患者,112例患者至少完成1次LCI评估,98例(90%)研究结束时仍在随访中。患者中位(IQR)年龄14.7(8.6~22.2)岁,FEV1均值为-1.2(-4.3~1.3)。第1次就诊的中位LCI为7.7(5.6~15.1),儿童和成人之间没有显著差异。FEV1 评分与首次就诊时LCI之间存在显著相关性(r=−0.43,95%CI, −0.58 ~ −0.25,p<0.0001)然而,FEV1正常的81例受试者中,63%的LCI升高(表明肺功能较差),51例(63%)LCI ≥6.9。中位总LCI测试时间低于19min,儿童测试中位时间16.3min(13.5~19.3)vs 成人测试时间21.2min(18.6~24.3)(p<0.0001)。6个月内重复稳定测量,LCI的平均(一致性限度)变化为0.9%(-18.8%~20.7%)。LCI加速下降与基线LCI较高、年龄增加、基线FEV1较低、假单胞菌感染和静脉抗生素疗程增加有关。

结果表明,大多数肺功能良好的CF患者随着时间的推移表现出稳定的LCI。基线LCI是未来进展的危险因素。结果支持在临床实践中使用LCI识别肺功能下降风险患者。

原文出处:

Alex R Horsley, John Belcher, Longitudinal assessment of lung clearance index to monitor disease progression in children and adults with cystic fibrosis, Thorax, 2021, http://dx.doi.org/10.1136/thoraxjnl-2021-216928.

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    2022-04-07 飞行的小土豆

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