Perfusion index smoother

摘要

An embodiment of the present disclosure seeks to smooth a perfusion index measurement through use of a baseline perfusion index measurement and/or through the use of multiple PI calculations. The combination of the baseline perfusion index measurement reduces an error between a calculated measurement of PI and actual conditions.

主权项

1. A method of determining an indication of perfusion index in a patient monitor, the method comprising:
receiving pleth data; calculating at least two indications of perfusion index using at least two different calculation techniques; and determining a final indication of perfusion index based on the at least two indications of perfusion index; wherein the final indication of perfusion index is determined by selecting the lowest indication of perfusion index.