Peripheral Perfusion Index in Adult Patients Attending an Ophthalmology Specialty Consultation for the First Time in the Western Part of Mexico

Topete-Jiménez Jorge, Hernández Ortega Luis Daniel and Castañeda Arellano Rolando
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Topete-Jiménez Jorge: Grupo Oftalmológico San Jorge, Mexico
Castañeda Arellano Rolando: CUTONALA, Universidad de Guadalajara, Mexico

Biomedical Journal of Scientific & Technical Research, 2025, vol. 60, issue 1, 52213-52218

Abstract: Pulse oximeters measure three parameters through photoplethys- mographic signal analysis: oxygen saturation, pulse rate, and perfu- sion index (PI). The PI is an indirect measure of peripheral perfusion expressed as the percentage of pulsatile signals compared to non-pul- satile signals. The PI can vary when measured on different fingers. A low PI indicates vasoconstriction and therefore low blood flow, while a high PI suggests vasodilation and consequently better blood flow. (He HW, et al. [1,2]).

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Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:abf:journl:v:60:y:2025:i:1:p:52213-52218

DOI: 10.26717/BJSTR.2025.60.009399

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