在儿童的运动挑战中PEF和FEV1变化的关系
Leon Csonka1, Antti Tikkakoski2, Anna P Tikkakoski1
1Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
Clinical physiology and functional imaging
|November 7, 2023
概括
该研究发现,高峰呼气流 (PEF) 的15%降低对于在运动挑战期间诊断儿童喘来说太低. 推的PEF截止值为20%和25%,可以更好地预测一秒内强制呼气体积的变化 (FEV1).
科学领域:
- 儿科肺病学 儿科肺病学
- 呼吸系统医学 呼吸系统医学
- 诊断准确性研究 诊断准确性研究
背景情况:
- 运动挑战测试用于诊断喘.
- 一秒钟内强迫呼气体积 (FEV1) 减少10%或15%是诊断性的.
- 峰值呼气流 (PEF) 减少15%是一个替代的诊断标准.
研究的目的:
- 为了评估不同PEF降低截止点在预测FEV1降低中的准确性.
- 将PEF变化与已确定的FEV喘诊断值进行比较.
- 为了确定儿童运动挑战测试的最佳PEF截止值.
主要方法:
- 追溯分析326个自由跑运动挑战测试在儿童 (6-16岁).
- 在运动前和运动后15分钟内,对FEV1和PEF进行螺旋计测量.
- 使用了接收器操作特征 (ROC) 分析,灵敏度,特异性和预测值.
主要成果:
- 预测10%FEV1下降的ROC曲线下的面积为0.851,预测15%FEV1下降为0.921.
- 20%的PEF降低显示为检测10%的FEV1降低的有希望,并且25%的PEF降低为15%的FEV1降低.
- 目前推的15%的PEF降低截止值导致高错误阳性率.
结论:
- 在运动挑战测试中,PEF变化不是FEV1变化的准确预测指标.
- 推的15%的PEF降低截止值可能太低,导致过度诊断.
- 调整的PEF截止点 (20%和25%) 可能会提高儿童喘的诊断准确性.
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