Szmuk P, Pivalizza E, Warters R D, Ezri T, Gebhard R
Department of Anaesthesiology, University of Texas South-western Medical Center, Dallas, TX, USA.
Anaesthesia. 2008 Mar;63(3):307-12. doi: 10.1111/j.1365-2044.2007.05369.x.
A new continuous noninvasive blood pressure measurement device, the T-Line Tensymeter TL100 (Tensys Medical Inc., San Diego, CA, USA) which enables avoidance of arterial cannulation has been developed. We compared the values obtained using the T-Line values to simultaneous arterial line measurements in patients undergoing general anaesthesia with induced hypotension. Twenty-five patients, aged 18-70 years, were studied. The T-Line and arterial line were positioned on the contralateral wrists. Intra-operative, real-time, blood pressure data were electronically captured and stored on a computer. Bland-Altman plots and 95% limits of agreement show that the majority of T-Line data points were within 5 mmHg of the arterial line measurements (67%) and agreement was within 15 mmHg in 94.6% or more of all measurements. There was virtually no distinguishable error over the course of surgery using the device. In conclusion, the T-Line measurements correlate with arterial measurements during anaesthesia in which there were periods of both normotensive and hypotensive anaesthesia. The T-Line Tensymeter represents a noninvasive alternative to an arterial line in cases when arterial blood sampling is not required.
一种新型的连续无创血压测量设备——T-Line Tensymeter TL100（美国加利福尼亚州圣地亚哥市的Tensys Medical公司）已被研发出来，该设备能够避免动脉插管。我们将T-Line测量所得的值与接受全身麻醉并伴有诱导性低血压的患者同时进行的动脉内测压值进行了比较。研究了25名年龄在18至70岁之间的患者。T-Line和动脉内测压装置放置在对侧手腕上。术中实时血压数据通过电子方式采集并存储在计算机上。Bland-Altman图和95%一致性界限表明，大多数T-Line数据点与动脉内测压值相差在5 mmHg以内（67%），在所有测量中，94.6%或更多的测量结果一致性在15 mmHg以内。在手术过程中使用该设备几乎没有明显误差。总之，在存在正常血压和低血压麻醉阶段的麻醉过程中，T-Line测量值与动脉测量值相关。当不需要进行动脉血采样时，T-Line Tensymeter是动脉内测压的一种无创替代方法。
