Hypothermia effects microsensor measurement of tissue pH

Author

Auerbach, Alan H. ; Soller, Babs R. ; Peura, Robert A. ; Stahl, Russell F.

Author_Institution

Div. of Cardiothoracic Surg., Massachusetts Univ. Med. Center, Worcester, MA, USA

fYear

1994

fDate

1994

Firstpage

830

Abstract

pH monitoring during heart surgery requires temperature-correction of the sensor calibration constants to accurately measure tissue pH during hypothermic cardiac arrest. Polynomial regressions derived from sensor calibrations at different temperatures accurately described the relationship between pH and voltage output of the sensor. The error without temperature-correcting the sensor was as large as 0.3 pH units during in vivo measurements

Keywords

biomedical measurement; biosensors; biothermics; calibration; cardiology; microsensors; pH measurement; patient monitoring; polynomials; surgery; error; heart surgery; hypothermia effects; hypothermic cardiac arrest; in vivo measurements; microsensor measurement; pH monitoring; polynomial regressions; sensor calibration constants; temperature-correction; tissue pH; voltage output; Calibration; Cardiac arrest; Heart; In vivo; Microsensors; Polynomials; Sensor phenomena and characterization; Surgery; Temperature sensors; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1994. Engineering Advances: New Opportunities for Biomedical Engineers. Proceedings of the 16th Annual International Conference of the IEEE

Conference_Location

Baltimore, MD

Print_ISBN

0-7803-2050-6

Type

conf

DOI

10.1109/IEMBS.1994.415167

Filename

415167