Blaylock Vicki, Brinkman Mary, Carver Sharon, McLain Penny, Matteson Stephanie, Newland Pam, Pettit Ruth, Schulman Christine, vanSchijndel Willy, Watson Sheri
Providence St Vincent Medical Center, Portland, OR 97225, USA.
J Perianesth Nurs. 2008 Dec;23(6):379-86. doi: 10.1016/j.jopan.2008.07.009.
We compared loss of pulse oximetry signal (dropout rates) for both finger and forehead sensors in postanesthesia patients. Pulse oximetry is a widely practiced method for measuring oxygen saturation. Several studies in various patient populations have demonstrated that low flow states, patient movement, and hypothermia may result in poor signal quality with the use of finger oximetry sensors. These clinical conditions are common in patients as they emerge from anesthesia. New forehead sensors may reduce signal dropout. A method-comparison design was used to compare finger and forehead oximetry signal dropout rates. Of 48 subjects studied, only three had a signal dropout. Overall, there were seven episodes of signal dropout; six of seven occurred with the finger sensor. Signal dropout occurred rarely in PACU subjects. Use of finger sensors for routine postanesthesia monitoring should be adequate in the majority of patients.
我们比较了麻醉后患者手指和前额传感器的脉搏血氧饱和度信号丢失情况（脱落率）。脉搏血氧饱和度测定法是一种广泛应用于测量血氧饱和度的方法。多项针对不同患者群体的研究表明，低流量状态、患者活动及体温过低可能导致使用手指血氧饱和度传感器时信号质量不佳。这些临床情况在患者麻醉苏醒时很常见。新型前额传感器可能会减少信号丢失。采用方法比较设计来对比手指和前额血氧饱和度信号的脱落率。在研究的48名受试者中，仅有3人出现信号丢失。总体而言，共有7次信号丢失事件；其中7次中的6次发生在手指传感器上。在麻醉后护理单元（PACU）的受试者中，信号丢失很少发生。对于大多数患者，使用手指传感器进行常规麻醉后监测应该足够了。
