What is normal pi %? The normal perfusion index (PI) ranges from0.02% 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. ...
Forget P, Lois F, de Kock M: Goal-directed fluid management based on the pulse oximeter-derived pleth variability index reduces lactate levels and improves fluid management. Anesth Analg. 2010, 111: 910-914. PubMed Google Scholar Gan TJ, Soppitt A, Maroof M, El-Moalem H, Robertson KM...