抽象的
呼吸电感过度体积(RIP)测量体表运动的呼吸。已经提出了各种技术来校准,以便定量使用RIP。这些包括计算核曲线与腹部体积变化(K)的比例常数。本研究的目的是1)确定k的固定值是否可用于校准,2)将该技术与正常健康婴儿的多元线性回归(MLR)和定性诊断校准(QDC)进行比较。在12个婴儿的安静(QS)和主动睡眠(AS)期间制作了肺气管仪(PNT)流量和RIP的录制。睡眠状态的前5分钟用于计算应用于后续验证数据的校准因子。计算RIP和PNT潮卷之间的绝对百分比误差。百分比误差在QS期间的宽范围内相似。然而,当呼吸不相位时,k变得更加重要。选择k的标准为0.5。 There was good agreement between calibration methods during QS and AS. In the first minute following calibration during QS, the mean absolute errors were 3.5, 4.1 and 5.3% for MLR, QDC and fixed K respectively. The equivalent errors in AS were 11.5, 13.1 and 13.7% respectively. The simple fixed ratio method can be used to measure tidal volume with similar accuracy to multiple linear regression and qualitative diagnostic calibration in healthy unsedated sleeping infants, although it remains to be validated in other groups of infants, such as those with respiratory disease.