V Congreso Latinoamericano de Ingeniería Biomédica (CLAIB2011)

Diseño y construcción de un módulo de Pulsioximetría (SpO2)
Martínez Higuera Edgar Fernando, Julio Guerrero Liana Margarita

##manager.scheduler.building##: Palacio de Convenciones de La Habana
##manager.scheduler.room##: Sala 12
Fecha: 2011-05-19 12:00  – 01:30
Última modificación: 2011-04-14 11:39


This article describes the design and implementation process of a module of Pulse Oximetry SpO2 (Saturation of Hemoglobin with Oxygen As Measured by Pulse Oximetry) by means of the method of light transmittance through a pulsating vascular bed. A digital sensor was used to get the signal which has two light-emitting diodes, a red one in the visible region of the spectrum and another in the infrared together with a photoreceptor. The portion of light which is received by the photoreceptor is transmitted alternately from the red and infrared light, then reconstructed and processed with a dsPIC. Finally it is displayed as a plethysmographic waveform which gives the possibility to determine the percentage of oxygenated hemoglobin in the arteries.