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Feasibility study of a fiber‐optic system for invasive blood pressure measurements
Author(s) -
Reesink Koen D.,
van der Nagel Theo,
Bovelander Jan,
Jansen Jos R.C.,
van der Veen Frederik H.,
Schreuder Jan J.
Publication year - 2002
Publication title -
catheterization and cardiovascular interventions
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.988
H-Index - 116
eISSN - 1522-726X
pISSN - 1522-1946
DOI - 10.1002/ccd.10295
Subject(s) - optical fiber , medicine , fiber optic sensor , offset (computer science) , transfer function , pressure sensor , biomedical engineering , optics , electrical engineering , computer science , physics , thermodynamics , programming language , engineering
A comparative study was conducted to evaluate the feasibility of a fiber‐optic sensor in invasive blood pressure measurements. Static and wide‐bandwidth stimuli were offered to the fiber‐optic, Millar, Baxter, and Sentron devices to measure static transfer function and transient response. Animal experiments focused on offset drift, dynamic accuracy, and electromagnetic sensitivity. Compared to the Millar, Sentron, and Baxter devices, the fiber‐optic sensor had a near‐identical static transfer function. Gain and offset errors were < 3.4% and < 0.25%, respectively. Hysteresis nonlinearity was < 0.1%. The dynamic accuracy of the fiber‐optic system matched that of the Millar and Sentron systems. Time delay was < 1 msec. Maximum rate of change was > 30,000 mm Hg/sec and bandwidth was 0–150 Hz minimum. Offset drift was 0.6 ± 0.03 mm Hg. Application of diathermy highlighted the fiber‐optic sensor's excellent electromagnetic disturbance rejection. The fiber‐optic system appears to be a reliable, high‐fidelity pressure monitor in demanding clinical environments. Cathet Cardiovasc Intervent 2002;57:272–276. © 2002 Wiley‐Liss, Inc.