Key result
Modeling photoplethysmogram AC signal changes after flow-mediated dilation classified healthy and diabetic subjects with 80% accuracy, 78.6% sensitivity, and 81.6% specificity.
Why the study?
Does autoregressive modeling of PPG signals during FMD accurately classify healthy versus diabetic subjects?
Observational (n=30)
Does autoregressive modeling of PPG signals during FMD accurately classify healthy versus diabetic subjects?
Effect estimate: Accuracy 80%
Autoregressive modeling of PPG signals during flow-mediated dilation can classify healthy and diabetic subjects with 80% accuracy, offering a potential alternative to ultrasound for assessing endothelial function.
It is proved that the endothelial (artery inner lumen cells) function is associated with cardiovascular risk factors. Among all the common non-invasive methods employed in the research setting for assessing endothelial function, flow-mediated dilation is the most widely used one. This technique measures endothelial function by inducing reactive hyperemia using temporary arterial occlusion and measuring the resultant relative increase in blood vessel diameter via ultrasound. In this paper, the limitations associated with the ultrasound technique are overcome by using the photoplethysmogram (PPG) signal recorded during FMD. The correctness of this approach is investigated by modeling the AC changes of PPG after FMD by a 2nd order autoregressive model. A sensitivity of 78.6%, specificity of 81.6% and total accuracy of 80% were achieved in classification of 16 healthy and 14 diabetic subjects.
No takes yet. Share an insight, caveat, or question.
Amiri et al. (2012) conducted an observational in Diabetes (n=30). Photoplethysmogram (PPG) signal during FMD was evaluated on Classification of healthy and diabetic subjects (Accuracy 80%). Modeling photoplethysmogram AC signal changes after flow-mediated dilation classified healthy and diabetic subjects with 80% accuracy, 78.6% sensitivity, and 81.6% specificity.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: