Frequencies in Pulsatile Flow and Response of Magnetic Meter
An electromagnetic meter has been calibrated for pulsatile flow with use of a sinusoidal driver operating up to 45 c.p.s. Accurate recording of alternating flow at this frequency was possible under specified conditions. Pulsatile flow measurements from animals were directly calibrated by fractional collection of blood after it passed through the meter. Harmonic analyses of flow curves indicated that full response to 20 c.p.s. permitted adequate recording of femoral artery flow in an anesthetized dog.
- Received November 30, 1958.
- © 1959 American Heart Association, Inc.