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KMID : 0356019920070010041
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Koean Jounral of Critical Care Medicine
1992 Volume.7 No. 1 p.41 ~ p.45
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Effects of Radial Artery Cannulation on the Index Finger Blood Flow by lmpedence Plethysmograph
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Abstract
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Indwelling radial artery cannula are common1y used to continuously measure blood pressure and provide information about blood gases, including hemoglobin oxygen saturation. It is also assumed that insertion of an arterial cannula can cause spasm and decreased blood flow distal to the cannula, although there are no reports as to the degree and duration of this assumed decrease in flow.
We investigated index finger blood flow after radial artery cannulation by Impedence Plethysmograph. Index finger blood flow was decreased frorn 17.6±2.2 to 10.0±1.1 ml/min/l00 ml of digit maximally at 30 second after cannulation and reduction of blood flow was statistically significant until 90 seconds.
After that times the reduetion of blood flow was not significant.
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