Why the study?
Does continuous non-invasive arterial pressure measurement via radial artery tonometry accurately reflect invasive radial artery pressure in high-risk surgical patients?
Population
22 high-risk surgical patients with an inter-arm oscillometric mean arterial pressure difference ≤ 10 mm Hg
Comparison
Continuous non-invasive arterial pressure… vs Invasive radial artery pressure recordings from…
Design
Cross-sectional
Authors
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CNAP tonometry shows only moderate accuracy versus invasive BP in high-risk surgery; leaves open utility for trends pending prospective validation.
Does continuous non-invasive arterial pressure measurement via radial artery tonometry accurately reflect invasive radial artery pressure in high-risk surgical patients?
Radial artery tonometry provides only moderate and unpredictable accuracy for absolute blood pressure values and should not replace invasive monitoring in high-risk surgical patients, though it may be useful for trend monitoring during anesthesia induction.
Weiss et al. (1996) studied this question.
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