Key result
Finapres finger cuffs show unpredictable blood pressure differences compared to intra-arterial lines.
Why the study?
Continuous noninvasive blood pressure measurement has potential use in the critically ill, but its accuracy compared to intra-arterial pressure is uncertain.
Does Finapres accurately represent intra-arterial blood pressure in critically ill patients?
Observational (n=10)
Does Finapres accurately represent intra-arterial blood pressure in critically ill patients?
The Finapres finger cuff cannot be recommended as a substitute for intra-arterial blood pressure measurement in critically ill patients due to unpredictable differences in readings.
Unpredictable Finapres discrepancies caution against substitution for intra-arterial monitoring; leaves open its role in critically ill patients pending prospective validation.
Continuous noninvasive blood pressure measurement is of great potential use in the critically ill. This study was designed to find out whether measurements of blood pressure by a Finapres accurately represented intra-arterial pressure. Comparisons were made between readings from a radial artery line and from a Finapres finger cuff in 10 critically ill patients. There was an unpredictable but usually stable difference between measurements from the two sources; this difference varied in magnitude and direction in individual patients. At present the Finapres cannot be recommended as a substitute for intra-arterial blood pressure measurement in the critically ill.
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I. Farquhar (1991) conducted an observational in critically ill (n=10). Finapres finger cuff vs. radial artery line was evaluated on accuracy of blood pressure measurement compared to intra-arterial pressure. Finapres finger cuff measurements showed an unpredictable difference compared to intra-arterial pressure, varying in magnitude and direction among individual patients.
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