Browsing by Author "Ruiz Hidalgo, Aura Maria"
Now showing 1 - 1 of 1
Results Per Page
Sort Options
Item Estimación de la frecuencia respiratoria a partir de la combinación de parámetros derivados de la señal fotopletismografica.(Universidad Santiago de Cali, 2023) Ruiz Hidalgo, Aura Maria; Sanchez, Yheferson Andrade; Argüello Prada, Erick Javier (Director)In the current health care setting, accurate and continuous measurement of respiratory rate (RR) is essential to effectively assess health status. It was recently reported that variations in amplitude of successive systolic peaks of the photoplethysmographic (PPG) signal, known as systolic variability (RISV), provide a more accurate estimate of RF. However, limiting this estimate to a single parameter could exclude relevant information. The main objective of this investigation was to evaluate the contribution of RISV in the estimation of RF when combined with variations in amplitude (RIAV), frequency (RIFV) and intensity (RIIV) of the PPG signal due to respiration. Public databases with PPG recordings and respiratory signal were used as reference. After extracting the series of respiration-induced variations and obtaining their representation in the frequency domain using the Lomb-Scargle periodogram, estimates were evaluated using metrics such as RMSE and MAE, with errors of 6.50 and 5.21 resp/min. In addition, Bland-Altman concordance analysis was applied, with and without "smart fusion". The results suggest that combinations incorporating RISV, especially RIAF + RIIV + RIFV + RISV, considerably reduce the error associated with RF estimation. Although the differences between estimates and true values could be significant, further research is required to validate and adapt these findings to specific clinical situations.