1. ABI Doppler equipment calculates venous refill time, which helps doctors document venous insufficiencies. In some patients with severe, long-standing venous hypertension superficial vein reflux often may not be documented by ultrasound alone. In these cases the venous refill time calculation may be helpful for detection of venous insufficiency.
2. ABI Doppler should be used for patients with concomitant Peripheral Arterial Disease (PAD) to justify the use of compression therapy and to document the index. It is contraindicated to use compression therapy for patients with ABI lower than 0.5.
3. Some patients with Arterial Occlusive Disease (AOD) may show an ABI higher than 0.5, because they have developed adequate collateralization. Therefore, venous treatment can be justified if it improves their quality of life.