Vascular Communications of the Hand in Patients Being Considered for Transradial Coronary Angiography
Is the Allen’s Test Accurate?
Michael J. Greenwood, MBBS, FRACP*,
Anthony J. Della-Siega, MD,
Eric B. Fretz, MD,
David Kinloch, MD,
Peter Klinke, MD,
Richard Mildenberger, MD,
Malcolm B. Williams, MD and
David Hilton, MD
Victoria Heart Institute, Victoria, British Columbia, Canada
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Figure 1 (A and B) Visualizing the principal artery of the thumb (PAT) with color Doppler. (C) Pulsed-wave Doppler of the PAT as the clamp is removed from the radial artery. (D) Clamping device used to occlude the radial artery.
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Figure 2 Peak blood flow velocity in the principal artery of the thumb from baseline to immediately after radial artery occlusion to 30 min after radial artery occlusion. Heavy line represents the average for the group.
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Figure 3 Lactate and principal artery of the thumb (PAT) flow correlation after 30 min of radial artery occlusion.
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