ANALYTICAL STUDIES OF RENAL ARTERIOGRAM
I. On the Relationship Between Renal Blood Flow and Radius of Renal Artery
1974 Volume 65 Issue 7 Pages 411-422
Details
1974 Volume 65 Issue 7 Pages 411-422
Suwa et al. comfirmed a positive correlation between the blood flow and arterial radius by means of the measurements on arterial casts. They proved that arterial blood flow was expressed in the form of Q=qrn, where Q was mean arterial blood flow in ml/sec., r was radius of an artery branch in μ, q was an organ specific correlation coefficient and in kidney it was 4.4×10-9ml/sec., and n was almost invariable value in all arterial system and was approximately 2.7.
Renal blood flow computed by the theoretical formula of Suwa et al. is studied as to whether clinically useful or not, when radius of the renal artery is calculated on the basis of renal arteriogram and the results are as follows;
1. In adult dogs, renal blood flow, Q, computed by this formula is distinctly correlated with the value directly measured with a square-wave electromagnetic flow-meter.
2. In 29 clinical cases, 19 pyelographically normal cases and 10 cases with organic renal disease, Q is correlated with ERPF, ERBF and Ccr.
In conclusion, it is clarified that the formula of Suwa et al. can be applied to clinical cases and total renal blood flow can be computed by this formula, if it is possible to measure radius of the renal artery on the renal arteriogram.
