Retinal oximetry and systemic arterial oxygen levels

ConclusionThe results of this thesis indicate that spectrophotometric retinal oximetry is sensitive to both local and systemic changes in oxyhaemoglobin saturation. Retinal oxyhaemoglobin saturation values are slightly lower than radial artery blood sample and finger pulse oximetry values. The discrepancies between the different modalities are expected to derive from countercurrent exchange between central retinal artery and vein within the optic nerve but calibration issues cannot be excluded as contributing to this difference. Despite these differences, the findings indicate the potential of retinal oximetry for noninvasive real ‐time measurements of oxyhaemoglobin saturation in central nervous system vessels. Following calibration upgrade and technological improvement, verification retinal oximetry may potentially be applied to critically ill and anaesthesia care patients. The study on combined scanning laser ophthalmosc ope and retinal oximetry supports the feasibility of the technique for oximetry analysis in newly born babies.ÁgripTilgangurInnlei ðing púlsoximælinga til samfelldrar mælingar á súrefnismettun blóðs er ein mikilvægasta tækniþróun undanfarinna áratuga fyrir öryggi og vöktun sjúklinga. Þær hafa þó þann veikleika að mæla útæðar (peripheral circulation) og eina leiðin til að mæla súrefnisstyrk í miðl ægum æðum er með ífarandi slagæðamælingum. Mæling á súrefnismettun í sjónhimnuæðum augans með sjónhimnu‐súr...
Source: Acta Ophthalmologica - Category: Opthalmology Authors: Tags: Thesis Source Type: research