Comparison of Blood Pressure Monitoring by Applanation Tonometry and Invasively Assessed Blood Pressure in Cardiological Patients

Overview

Journal J Clin Monit Comput

Publisher Springer

Specialties Anesthesiology
General Medicine
Medical Informatics

Date 2017 Dec 6

PMID 29204771

Citations 7

Authors

G Greiwe

S Hoffmann

L Herich

M S Winkler

C J Trepte

C R Behem

M Petzoldt

D A Reuter

S A Haas

Affiliations

Soon will be listed here.

Abstract

The aim of this study was to evaluate the accuracy and precision of non-invasive continuous blood pressure measurement by applanation tonometry (AT) in awake or anaesthetised cardiological intensive care patients. Patients suffering from highly impaired left ventricular function atrial fibrillation or severe aortic valve stenosis were included into the study. Arterial blood pressure was recorded by applanation tonometry (T-Line 400, Tensys Medical, USA) and an arterial line in awake or anaesthetised patients. Discrepancies in mean (MAP), systolic (SAP), and diastolic (DAP) arterial pressure between the two methods were assessed as bias, limits of agreement and percentage error respectively. In 31 patients a total of 27,900 measurements were analyzed. The concordance correlation coefficient was 0.23, 0.45 and 0.06 for MAP, SAP and DAP, respectively. For all patients bias for MAP compared to MAP was 14.96 mmHg (SAP 4.51 mmHg; DAP 19.12 mmHg) with limits of agreement for MAP of 46.25 and - 16.33 mm Hg (SAP 48.00 and - 38.98 mmHg; DAP 50.12 and - 11.89 mmHg). Percentage error for MAP was 56.8% (42.7% for SAP; 75.2% for DAP). We conclude that the AT method is not reliable in ICU patients with severe cardiac comorbidities.

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