Photoelectric measurement of blood flow during hemodialysis

Peoples, Ralph W.; Cole, James J.; Vizzo, Joseph E.; Leith, William C.; Blagg, Christopher R.
January 1973
Kidney International;Jan1973, Vol. 3 Issue 1, p190
Academic Journal
The article presents information on the use of photoelectric measurements of blood flow rate during hemodialysis for determining hemodialyzer performance. The light-sensitive areas of phototransistors are normally darkened by blood contained in the tubing between light source and transistors. Measurement accuracy can be improved considerably when tubing length permits use of a longer race-track, since any variation in the timing relationship between bubble injection and stroke becomes an increasingly smaller increment of total transit time.


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