<qa>  What is the bracial index of the artery?8. Has any 1 of the following only 1 of the 3 tests is required: a On Doppler waveform analysis of the dorsalis pedis and posterior tibial arteries, a monophasic or biphasic flow with loss of reverse flow in either the artery of either foot; b Toe: bracial index 0.7 or 1.3; c Transcutaneous oxygen pressure 40 mmHg 