II. Medizinische Klinik und Poliklinik, Klinikum rechts der Isar der Technischen Universität München, Ismaninger Straße 22, 81675, Munich, Germany.
Intensive Care Med. 2012 Sep;38(9):1471-7. doi: 10.1007/s00134-012-2617-x. Epub 2012 Jun 29.
The T-Line TL-200 (Tensys Medical, San Diego, CA, USA) is a non-invasive arterial blood pressure (BP) monitoring system allowing continuous "beat-to-beat" monitoring of systolic arterial pressure (SAP), mean arterial pressure (MAP), and diastolic arterial pressure (DAP). It provides a real-time BP waveform like that obtained using an arterial catheter. The aim of this study was to compare BP measurements obtained using the T-Line TL-200 with simultaneous invasive BP measurements using a femoral arterial catheter in unselected critically ill medical patients.
In 28 patients treated in a medical intensive care unit (ICU), BP values were simultaneously obtained using a femoral arterial catheter and the T-Line TL-200. All recorded data were included in the final analysis. For comparison of BP measurements, Bland-Altman analysis accounting for repeated measurements was performed (primary endpoint).
A total of 76,826 pairs of BP measurements (each consisting of SAP, MAP, and DAP) were analyzed. For MAP, Bland-Altman analysis revealed a mean difference of +0.47 mmHg (95 % limits of agreement -16.53 to +17.46 mmHg). For SAP and DAP, the bias and 95 % limits of agreement were -9.01 mmHg (-37.47 to +19.45 mmHg) and +5.22 mmHg (-13.50 to +23.94 mmHg), respectively.
Non-invasive, continuous, radial BP measurement with the T-Line TL-200 is basically feasible in medical ICU patients (with a low bias for MAP compared to MAP assessed using a femoral arterial catheter). High limits of agreement (particularly of SAP and DAP) preclude the use of the device as a single source of BP information in unstable critically ill patients.
T-Line TL-200（Tensys Medical，圣地亚哥，加利福尼亚州，美国）是一种非侵入性动脉血压（BP）监测系统，允许连续“逐搏”监测收缩压（SAP）、平均动脉压（MAP）和舒张压（DAP）。它提供类似于使用动脉导管获得的实时 BP 波形。本研究的目的是比较使用 T-Line TL-200 获得的 BP 测量值与使用股动脉导管同时获得的侵入性 BP 测量值在未经选择的危重病医学患者中的差异。
在 28 名在重症监护病房（ICU）接受治疗的患者中，同时使用股动脉导管和 T-Line TL-200 获得 BP 值。所有记录的数据均包含在最终分析中。为了比较 BP 测量值，进行了考虑重复测量的 Bland-Altman 分析（主要终点）。
共分析了 76826 对 BP 测量值（每对包括 SAP、MAP 和 DAP）。对于 MAP，Bland-Altman 分析显示平均差异为+0.47mmHg（95%置信区间为-16.53 至+17.46mmHg）。对于 SAP 和 DAP，偏差和 95%置信区间分别为-9.01mmHg（-37.47 至+19.45mmHg）和+5.22mmHg（-13.50 至+23.94mmHg）。
在医学 ICU 患者中，使用 T-Line TL-200 进行非侵入性、连续的桡动脉 BP 测量基本可行（与使用股动脉导管评估的 MAP 相比，MAP 的偏差较低）。高的一致性界限（特别是 SAP 和 DAP）排除了该设备在不稳定的危重病患者中作为单一 BP 信息来源的使用。
