Perfusion index(PI) indicates amount of blood flow to your finger.
Range is from 0.02-20%
Every person has their own PI and we should monitor that value with respect to ourself only.
We cannot compare it to other persons.
High PI indicates good blood flow to the periphery (fingers) from the centre(heart)
This is a good sign.
If PI is low, person may have low blood pressure, trauma with blood loss, blood clots that prevent blood flow towards fingers etc.
Next Steps
your vitals are normal, hence do not worry ✌ take care.