Authors: Nicolas Langwieser Luisa Prechtl Agnes S Meidert Alexander Hapfelmeier Christian Bradaric Tareq Ibrahim KarlLudwig Laugwitz Roland M Schmid Julia Y Wagner Bernd Saugel
Publish Date: 2015/01/25
Volume: 104, Issue: 6, Pages: 518-524
Abstract
Hemodynamic monitoring plays a pivotal role in the treatment of patients in the cardiac intensive care unit CICU The innovative radial artery applanation tonometry technology allows for continuous noninvasive arterial blood pressure AP measurement By closing the gap between continuous invasive AP monitoring arterial catheter and intermittent noninvasive AP monitoring oscillometry this technology might improve CICU patient monitoring We therefore aimed to evaluate the measurement performance of radial artery applanation tonometry in comparison with a radial arterial catheter in CICU patientsIn this prospective method comparison study we simultaneously recorded AP noninvasively with radial artery applanation tonometry Tline 200pro device Tensys Medical Inc San Diego CA USA and invasively with an arterial catheter criterion standard in 30 patients treated in the CICU of a German university hospital We statistically analyzed 7304 averaged 10beat epochs of measurements of mean AP systolic AP and diastolic AP by using Bland–Altman analysis for repeated measurementsOur study revealed a mean difference ± standard deviation 95 limits of agreement percentage error between radial artery applanation tonometry and the criterion standard method radial arterial catheter of +2 ± 6 mmHg −10 to +14 mmHg 17 for mean AP −6 ± 11 mmHg −28 to +15 mmHg 20 for systolic AP and +4 ± 7 mmHg −9 to +17 mmHg 23 for diastolic AP
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