A Novel Method to Determine the Respiratory Compensation Point from Percutaneous Oxygen Saturation of Healthy Adults During a Ramp-Incremental Test: A Cross-Sectional Study.

IF 4.4 Q1 Medicine
Masatsugu Abe, Kai Ushio, Masaya Tsubokawa, Koki Fukuhara, Yoshitaka Iwamoto, Daisuke Iwaki, Yuki Nakashima, Takeshi Nakamura, Yukio Mikami
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Abstract

Background: In exercise testing, the ventilatory threshold 1 (VT1) and ventilatory threshold 2 (VT2) are used in lifestyle-related diseases, cardiac rehabilitation, and athletic training. We investigated a VT2 measuring method using a pulse oximeter. Methods: Thirty-four adults (men: 15; women: 19) performed a bicycle ergometer Ramp Test. VT1 values were determined using expiratory gas data. The bifurcation of the curve obtained by designating the pulse rate (PR) as an independent variable and SpO2/PR as a dependent variable was calculated using the residual sum of squares and defined as the SpO2 threshold (ST) (SpO2-Slope method). A second bifurcation with ST as the origin was further defined (ST2). ST2 validity was assessed by comparing and analyzing the differences and correlations with each VT2 obtained by expiratory gas analysis. Results: The correlation between ST2 determined by the SpO2-Slope method using PR as an index and VT2 obtained from respiratory gas analysis was significant, showing a positive correlation (r = 0.74~0.92; p < 0.01), with most data points falling within the 1.96 ± SD in the Bland-Altman analysis. Conclusions: ST2 values derived from SpO2 and pulse rate measurements by pulse oximeter may be a valuable VT2 measuring method.

一种新的方法来确定呼吸代偿点从经皮氧饱和度的健康成人在斜增量试验:横断面研究。
背景:在运动试验中,通气量阈1 (VT1)和通气量阈2 (VT2)用于生活方式相关疾病、心脏康复和运动训练。我们研究了一种使用脉搏血氧仪测量VT2的方法。方法:34名成年人(男性15人,女性19人)进行了自行车测力仪斜坡测试。利用呼气气体数据测定VT1值。以脉冲率(PR)为自变量,SpO2/PR为因变量,利用残差平方和计算得到的曲线的分岔,并定义为SpO2阈值(ST) (SpO2- slope法)。以ST为原点的第二个分叉被进一步定义(ST2)。通过比较分析呼气气体分析所得各VT2的差异及相关性来评估ST2效度。结果:以PR为指标的SpO2-Slope法测定的ST2与呼吸气体分析所得的VT2呈显著正相关(r = 0.74~0.92; p < 0.01),多数数据点在Bland-Altman分析的1.96±SD范围内。结论:通过脉搏血氧仪测量SpO2和脉搏率得出的ST2值可能是一种有价值的VT2测量方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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CiteScore
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