Pressure indices in peripheral arterial disease assessed by infrared photosensors.

Ankle-brachial index (ABI) assessment by Doppler is operator dependent and limited in calcified arteries. For the detection of peripheral arterial disease (PAD), we evaluated ABI and toe-finger (ToFi) pressures by infrared (IR) sensors at the digits and compared with standard Doppler (Doppler-ABI) in 100 patients with PAD and in 15 controls. Pressure indices were obtained in 86% for Doppler-ABI, 82% for IR-ABI, and 94% for IR-ToFi (P < .