LD-Oxy plethysmography analysis presents advantages compared to other competitive analysis.
ADVANTAGES OF THE LD-OXY OXIMETER
- Accuracy of the heart rate detection: Comparing our algorithm using the first derivative of the photoplethysmography to EKG, the coefficient of correlation r=0.99.
-Accuracy of the HRV analysis. According to the standard ANSI/AAMI EC57, our results are in compliance with the Input MIT-BIH database.
- Research and development i.e. clinical studies.
The PTG spectral analysis using LD-Oxy has a pending patent, and it is related to the autonomic nervous system and artery function as shown in clinical studies, and it returns a high specificity and sensitivity to detect pre-diabetes, diabetes and vascular diseases.
PTG Spectral analysis markers were compared to:
- Gold standard of Insulin resistance assessment - Hyperinsulinemic Euglycemic Clamp (HEC)
PTG-TP marker returns a sensitivity = 95.7%, specificity =84,4% and the area under the ROC curve (AUC) = 0.929 for identifying insulin resistance.
- Oral Glucose Tolerance Test (OGTT)
The correlations between the OGTT and photoplethysmography index (PTGi) were: r = -0.56 (p = 0.003) for glucose and r = -0.41 (p =0.04)for insulin
- Coronary angiography
PTGi returns a sensitivity of 86.1% and specificity of 87.1% and the area under the ROC curve ( AUC) = 0.926 for identifying endothelial function.