Hypothermia effects microsensor measurement of tissue pH

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...

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Published inProceedings of 16th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Vol. 2; pp. 830 - 831 vol.2
Main Authors Auerbach, A.H., Soller, B.R., Peura, R.A., Stahl, R.F.
Format Conference Proceeding
LanguageEnglish
Published IEEE 1994
Subjects
Calibration
Cardiac arrest
Heart
In vivo
Microsensors
Polynomials
Sensor phenomena and characterization
Surgery
Temperature sensors
Voltage
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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.< >
AbstractList 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.< >
Author Stahl, R.F.
Auerbach, A.H.
Peura, R.A.
Soller, B.R.
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  fullname: Stahl, R.F.
  organization: Div. of Cardiothoracic Surg., Massachusetts Univ. Med. Center, Worcester, MA, USA
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Snippet pH monitoring during heart surgery requires temperature-correction of the sensor calibration constants to accurately measure tissue pH during hypothermic...
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StartPage 830
SubjectTerms Calibration
Cardiac arrest
Heart
In vivo
Microsensors
Polynomials
Sensor phenomena and characterization
Surgery
Temperature sensors
Voltage
Title Hypothermia effects microsensor measurement of tissue pH
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