Tracking blood pressure changes by means of non-invasive intermittent blood pressure measurements in clinical application Tracking capabilities of non-invasive intermittent blood pressure measurement devices fulfilling DIN en ISO 81060-2 - A simulation study

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Abstract

Considering accuracy/precision cut-offs of 5 ± 8 mmHg and cut-off values for inter-class correlation coefficients (ICC=0.37...1, from DIN EN ISO 81060-2), absolute and relative errors in time independent measurement of blood pressure changes with non-invasive intermittent devices (NiBP) are derived mathematically for mean arterial blood pressure range of 40-180 mmHg. As a clinically relevant value for change of arterial blood pressure 20% of the baseline blood pressure is considered. The mean ratio between the change of BP measured by the NiBP and measured by the invasive reference device (TE%) were proposed as quality measure for the evaluation of NiBP device tracking capability. The proposed measure TE%is theoretically independent of absolute accuracy but depends on precision and ICC of a device. NiBP devices show considerable maximum TE% of 41% in tracking mean blood pressure changes respectively. In 10% of the measurements in the low blood pressure range TE% exceeding 100%. The mean 50th/90th TE% percentile over the whole blood pressure range were 25/61%, respectively. Furthermore, TE% was relatively insensitive to assumed blood pressure range but sensitive to ICC. NiBP devices have high relative error in tracking blood pressure changes that make those devices not well-suited for tracking blood pressure changes. The proposed tracking error allows the definition of reasonable accuracy/precision requirements of NBP devices.

Details

OriginalspracheEnglisch
Seiten (von - bis)815-818
Seitenumfang4
FachzeitschriftCurrent Directions in Biomedical Engineering
Jahrgang7
Ausgabenummer2
PublikationsstatusVeröffentlicht - 1 Okt. 2021
Peer-Review-StatusJa

Externe IDs

ORCID /0000-0003-2185-1819/work/142245077
ORCID /0000-0002-5224-1709/work/151434728

Schlagworte

ASJC Scopus Sachgebiete

Schlagwörter

  • accuracy, blood pressure measurement, inter-class correlation, precision, standard, tracking blood pressure changes