Blood pressure monitoring based on pulse transit or arrival time has been the focus of much
research in order to design ambulatory blood pressure monitors. The accuracy of these …

Systolic time intervals have been used to detect and quantify the directional changes of left
ventricular function. New methods of recording these cardiac timings, which are less …

Cardiovascular diseases are the main cause of death worldwide, with sleep disordered
breathing being a further aggravating factor. Respiratory illnesses are the third leading …

Cardiac time intervals are important hemodynamic indices and provide information about left
ventricular performance. Phonocardiography (PCG), impedance cardiography (ICG), and …

The Pulse Transit Time (PTT) is generally assumed to be a good surrogate measure to
comfortably track blood pressure (BP) and blood pressure changes. This paper investigates …

Background Vascular transit time (VTT) is the propagation time of a pulse wave through an
artery; it is a measure for arterial stiffness. Because reliable non-invasive VTT …

Goal: the objective of this study was to develop a method to identify respiratory phases (ie,
inhale or exhale) of seismocardiogram (SCG) cycles. An SCG signal is obtained by placing …

We propose a hidden Markov model approach for processing seismocardiograms. The
seismocardiogram morphology is learned using the expectation-maximization algorithm …

Photoplethysmography (PPG) is a widely available non-invasive optical technique to
visualize pressure pulse waves (PWs). Pulse transit time (PTT) is a physiological parameter …

Automated analysis of heart sound recordings (phonocardiograms or PCG) for classification
of heart beats in noisy environments is a challenging problem. The major challenges are …