Reliability of transcutaneous oximeter electrode heating power during exercise in patients with intermittent claudication
Reliability of transcutaneous oximeter electrode heating power during exercise in patients with intermittent claudication
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DOI：
10.1177/000331979704800305
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发表时间：
1997-03-01
期刊：
影响因子：
2.8
通讯作者：
Gardner, AW
中科院分区：
文献类型：
--
作者：
Gardner, AW
本研究的目的是（1）比较经皮血氧计电极功率的可靠性与氧分压的可靠性；（2）比较跛行者的血氧测定测量与运动表现的关系。 110名具有稳定跛行症状的PAOD患者进行跑步机测试，获得以下运动指标：足部经皮氧分压、血氧计电极加热功率、运动持续时间和峰值耗氧量。连续三周内，每周对 30 名患者进行一次测试，以评估血氧饱和度测量的可靠性。运动峰值时足部经皮氧分压的变异系数为32.8%，而血氧计电极加热功率的变异系数仅为5.1%。峰值运动时的血氧计电极加热功率与最大跛行疼痛时间（r=0.44，P < 0.001）和峰值耗氧量（r=0.36，P < 0.001）有关，而足部经皮氧分压与两者均无关（分别为r=0.15，P=0.119；r=0.13，P=0.189）。因此，经皮血氧计电极加热功率的变化比经皮氧分压低六到七倍，并且运动峰值时的血氧计电极功率与运动能力更密切相关。结论是，对于间歇性跛行的 PAOD 患者，运动时经皮血氧计电极加热功率的测量比经皮氧分压的测量更可靠，且与运动能力的相关性更好。
The purposes of this study were to (1) compare the reliability of transcutaneous oximeter electrode power with the reliability of oxygen tension and (2) compare the relationship of the oximetry measures with exercise performance in claudicants. One hundred ten PAOD patients with stable claudication symptoms performed a treadmill test and had the following exercise measures obtained: foot transcutaneous oxygen tension, oximeter electrode heating power, exercise duration, and peak oxygen consumption. A subset of 30 patients were tested once per week over three successive weeks to assess the reliability of the oximetry measures. The coefficient of variation of foot transcutaneous oxygen tension at peak exercise was 32.8%, whereas the variability of the oximeter electrode heating power was only 5.1%. Oximeter electrode heating power at peak exercise was related to maximal claudication pain time (r=0.44, P < 0.001) and peak oxygen consumption (r=0.36, P < 0.001), whereas foot transcutaneous oxygen tension was not related to either (r=0.15, P=0.119; r=0.13, P=0.189; respectively). Thus, transcutaneous oximeter electrode heating power was six to seven times less variable than transcutaneous oxygen tension, and the oximeter electrode power at peak exercise was more closely related to exercise capacity. It ss concluded that the measurement of transcutaneous oximeter electrode heating power during exercise is more reliable and better correlated with exercise capacity in PAOD patients with intermittent claudication than the measurement of transcutaneous oxygen tension.