Sato N, Yasumoto K, Hosoyamada A
Department of Anesthesiology, Showa University School of Medicine, Tokyo.
Masui. 1994 Feb;43(2):262-7.
We have investigated a new optical reflectance sensor for pulse oximetry in 70 patients under general anesthesia. The reflectance sensor was applied to the forehead, the dorsal manus, the inguinal region, and the anterior crus of the patients. We could obtain a reliable SpO2 value when the reflectance sensor was applied on both forehead and anterior crus. It was difficult to obtain a reliable SpO2 value with the reflectance sensor without using an additional attachment especially for children. We compared the SpO2 value using the reflectance sensor attached to the forehead, with the SpO2 value obtained by the transmittance sensor attached to a finger or an ear lobe, in 7 volunteers who held the breath as long as possible. When we attached the probes on both ear lobe and forehead, the response time was faster, but and the maximum changing value was much larger, compared with those on the finger. We could obtain a reliable and stable SpO2 value using the reflectance sensor, when it was placed on the appropriate site as the forehead or the anterior crus.
我们在70例全身麻醉患者中研究了一种用于脉搏血氧测定的新型光学反射传感器。将反射传感器应用于患者的前额、手背、腹股沟区域和小腿前部。当反射传感器应用于前额和小腿前部时，我们能够获得可靠的SpO2值。不使用额外附件时，使用反射传感器很难获得可靠的SpO2值，尤其是对于儿童。我们在7名尽可能长时间屏气的志愿者中，比较了附着在前额的反射传感器测得的SpO2值与附着在手指或耳垂上的透射传感器测得的SpO2值。当我们将探头同时附着在耳垂和前额上时，与附着在手指上相比，响应时间更快，但最大变化值要大得多。当反射传感器放置在前额或小腿前部等合适部位时，我们能够获得可靠且稳定的SpO2值。
