Hemodynamic changes with arterial stenosis experimentally created using the sliding calipers method.

The relationship of blood pressure, blood flow and Doppler waveform to arterial stenosis was investigated in a canine model. The method of making a stenosis involved using slide calipers and the critical stenosis of the femoral artery was 75 per cent. Among the parameters from Doppler waveform; peak forward velocity, pulsatility index, acceleration and deceleration correlated well with arterial stenosis, having correlation coefficients of -0.729, -0.856, -0.824 and -0.739, respectively. The results of this method conform closely to clinical conditions with regard to progress of the occlusive process.