Plantar Acceleration Duplex

Talk by vascular scientist in the USA - using acceleration time on duplex to grade plantar blood flow.

Jill says primary objective is understanding whether a foot that is in trouble is ‘hibernating’ or ‘desert’. Well put.

Helpful description of the named arterial branches beyond the ankle level. They use either a conventional linear or a hockey stick probe.

The metric is time taken for the arterial pulse to progress from onset to peak of systole. Lower, the better.

I’ve looked up the abstract of Jill’s original 2019 paper below. The time metric is milliseconds (ms). They grouped patients in 4 classes based on clinical symptoms + ABI, class 1 being normal and 4 being rest pain/ tissue loss.

I am representing their paper conclusions as below: 

Normal foot: PAT 1-120 ms

Slightly ichaemic foot: PAT 121-180 ms

Moderately ischaemic foot: PAT 181 - 224 ms

Threatened severely ischaemic foot: PAT over 225 ms