# What should your perfusion index be?

### What should your perfusion index be?

0.02% to 20% The normal perfusion index (PI) ranges from 0.02% to 20% showing weak to strong pulse strength. How accurate is it? You can never say that your oximeter is 100% accurate. It can show a 2% over or 2% under due to your arterial blood gas or mechanical fault.

### What is the significance of perfusion index?

The perfusion index (PI) is the ratio of the pulsatile blood flow to the nonpulsatile or static blood in peripheral tissue. Perfusion Index thus represents a noninvasive measure of peripheral perfusion that can be continuously and noninvasively obtained from a pulse oximeter.

Adequate perfusion is essential: Perfusion is the means by which blood provides nutrients and removes cellular waste. Adequate tissue perfusion-when supply meets demand-is necessary to maintain healthy vital tissue.

### What happens if your perfusion index is too low?

What is important to note is that pulse oximeter readings can be highly inaccurate if your perfusion index is too low, generally speaking, if your perfusion index is below or at 0.4%. Due to the lack of pulse, the pulse oximeter cannot accurately measure the amount of oxygen in the blood.

### What is the perfusion index ( PI ) of a pulse?

What is Perfusion Index (PI) Perfusion Index or PI is the ratio of the pulsatile blood flow to the non-pulsatile static blood flow in a patient's peripheral tissue, such as finger tip, toe, or ear lobe. Perfusion index is an indication of the pulse strength at the sensor site. The PI's values range from 0.02% for very weak pulse to 20%...

### Why do I need a perfusion index on my pulse oximeter?

The reason having a perfusion index on your pulse oximeter is a good idea is because it can help increase the accuracy of the readings which the pulse oximeter gives you in relation to your blood oxygen levels.

### Which is a noninvasive measure of blood perfusion?

The perfusion index (PI) is the ratio of the pulsatile blood flow to the nonpulsatile or static blood in peripheral tissue. Perfusion Index thus represents a noninvasive measure of peripheral perfusion that can be continuously and noninvasively obtained from a pulse oximeter.