The T-Line TL-200 system for continuous non-invasive blood pressure measurement in medical intensive care unit patients
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The T-Line TL-200 system for continuous non-invasive blood pressure measurement in medical intensive care unit patients. / Saugel, Bernd; Fassio, Florian; Hapfelmeier, Alexander; Meidert, Agnes S; Schmid, Roland M; Huber, Wolfgang.
In: INTENS CARE MED, Vol. 38, No. 9, 01.09.2012, p. 1471-7.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - The T-Line TL-200 system for continuous non-invasive blood pressure measurement in medical intensive care unit patients
AU - Saugel, Bernd
AU - Fassio, Florian
AU - Hapfelmeier, Alexander
AU - Meidert, Agnes S
AU - Schmid, Roland M
AU - Huber, Wolfgang
PY - 2012/9/1
Y1 - 2012/9/1
N2 - PURPOSE: 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.METHODS: 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).RESULTS: 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.CONCLUSIONS: 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.
AB - PURPOSE: 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.METHODS: 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).RESULTS: 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.CONCLUSIONS: 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.
KW - Aged
KW - Blood Pressure
KW - Blood Pressure Determination
KW - Critical Care
KW - Critical Illness
KW - Feasibility Studies
KW - Female
KW - Femoral Artery
KW - Humans
KW - Intensive Care Units
KW - Male
KW - Middle Aged
KW - United States
U2 - 10.1007/s00134-012-2617-x
DO - 10.1007/s00134-012-2617-x
M3 - SCORING: Journal article
C2 - 22744376
VL - 38
SP - 1471
EP - 1477
JO - INTENS CARE MED
JF - INTENS CARE MED
SN - 0342-4642
IS - 9
ER -