News

Characterization of T Wave Amplitude, Duration and Morphology Changes during Hemodialysis: Relationship with Serum Electrolyte Levels and Heart Rate

Chronic kidney disease affects more than 10% of the world population. Changes in serum ion concentrations increase the risk for ventricular arrhythmias and sudden cardiac death, particularly in end stage renal disease (ESRD) patients. We characterized how T wave amplitude, duration and morphology descriptors change with variations in serum levels of potassium and calcium and in heart rate, both in ESRD patients and in simulated ventricular fibers. Electrocardiogram (ECG) recordings from twenty ESRD patients undergoing hemodialysis (HD) and pseudo-ECGs (pECGs)…

Read more
Characterization of T Wave Amplitude, Duration and Morphology Changes during Hemodialysis: Relationship with Serum Electrolyte Levels and Heart Rate
Monitoring Blood Potassium Concentration in Hemodialysis Patients by Quantifying T-wave Morphology Dynamics

Monitoring Blood Potassium Concentration in Hemodialysis Patients by Quantifying T-wave Morphology Dynamics

We investigated the ability of time-warping-based ECG-derived markers of T-wave morphology changes in time (dw) and amplitude (da), as well as their non-linear components (dNLw and dNLa), and the heart rate corrected counterpart (dw,c), to monitor potassium concentration ([K+]) changes (Δ[K+]) in end-stage renal disease (ESRD) patients undergoing hemodialysis (HD). We compared the performance of the proposed time-warping markers, together with other previously proposed [K+] markers, such as T-wave width (Tw) and T-wave slope-to-amplitude ratio (TS/A), when computed from standard…

Read more

Electrocardiogram-Derived Tidal Volume During Treadmill Stress Test

Electrocardiogram (ECG) has been regarded as a source of respiratory information with the main focus in the estimation of the respiratory rate. Although little research concerning the estimation of tidal volume (TV) has been conducted, there are several ECG-derived features that have been related with TV in the literature, such as ECG-derived respiration, heart rate variability or respiratory rate. In this work, we exploited these features for estimating TV using a linear model. 25 young (33.4 ± 5.2 years) healthy male volunteers were recruited for performing…

Read more
Electrocardiogram-Derived Tidal Volume During Treadmill Stress Test
Three of our young researchers participate in the First Conference of the I3A

Three of our young researchers participate in the First Conference of the I3A

The BSiCoS group will be at the I3A Conference, where we will participate in the Young Researchers Meeting: - Pablo Armañac: The capacity of the baroreflex as an identification index of ICU patients prepared for weaning - Cristina Pérez: From the stress test to the prediction of sudden cardiac death using non-invasive markers - Saúl Palacios: Periodic dynamics of repolarization as a predictor of sudden death in patients with chronic heart failure Date: Friday, December 11 Time: 9 am -…

Read more

We will present five works at the XXXVII Annual Congress of the Spanish Society of Biomedical Engineering

This year, we will virtually attend the XXXVII Annual Congress of the Spanish Society of Biomedical Engineering (CASEIB) between November 25 and 27. Five of our researchers will defend the work carried out in our research group. CASEIB is a national reference forum for exchanging knowledge and experiences and promoting R + D + i in Biomedical Engineering. This is the BSiCoS group participation program: November 25 “Delay between QT and RR in stress test records as an indicator of…

Read more
We will present five works at the XXXVII Annual Congress of the Spanish Society of Biomedical Engineering
BSiCoS researchers apply engineering and mathematics to see the real activity of a person’s heart

BSiCoS researchers apply engineering and mathematics to see the real activity of a person’s heart

Researchers from the BSiCoS group, at the Engineering Research Institute of Aragon (I3A), University of Zaragoza, work from Engineering and Mathematics to know the functioning of the heart, see how its activity is when it is healthy and how it changes when a heart attack occurs, provide clinical specialists with the tools that they need to improve patient care. They do it through computation in cardiology, with the creation of a virtual heart that allows the computer to reproduce the…

Read more
Back to top