Reliable and accurate estimation of instantaneous frequencies of physiological rhythms, such as heart rate, is critical for many healthcare applications. Robust estimation is especially challenging when novel unobtrusive sensors are used for continuous health monitoring in uncontrolled environments, because these sensors can create significant amounts of potentially unreliable data. We propose ...

BACKGROUND The currently used fetal monitoring instrumentation that is based on Doppler ultrasound technique provides the fetal heart rate (FHR) signal with limited accuracy. It is particularly noticeable as significant decrease of clinically important feature - the variability of FHR signal. The aim of our work was to develop a novel efficient technique for processing of the ultrasound signal,...

We present a probabilistic way to extract beat positions from the output (activations) of the neural network that is at the heart of an existing beat tracker. The method can serve as a replacement for the greedy search the beat tracker currently uses for this purpose. Our experiments show improvement upon the current method for a variety of data sets and quality measures, as well as better resu...

Purpose: The purpose of this study is to determine whether short-term heart rate variability (HRV) can be used successfully to predict inducible ventricular tachycardia (VT). Methods: A high-speed (300 mm/s) electrocardiographs recording was obtained in 32 patients in the supine position prior to programmed ventricular stimulation. Beat-to-beat RR intervals (in milliseconds) were derived from a...

14,849 affected cases of beta thalassemia have been registered in 1995 in all provinces of iran. it is estimated that there are about three million carriers in iran. the provincial distributions of the affected cases show that the highest incidence in 100 thousand individuals was in mazandaran (71.29) and gilan (57.61), respectively, both near the caspian sea (north), followed by hormozgan (50....

Temperature characteristics for frequency of myogenic heart beat in Limulus embryos, before the onset of nervous control of the heart, were found to be 11,500; 16,400; 20,000; 25,500. The two first values are the best established. The different values pertain to the hearts of different individuals outwardly similar, and to the hearts of single embryos in different parts of the temperature range...

process. 1. The Foetal Electrocardiogram: The examination of the FECG by the traditional methods of cardiology have proved very disappointing and unrewarding. If, however, the FECG is merely used as a means of recording the beat-to-beat interval of the foetal heart, statistical evaluation of this information can yield a valuable prognostic index. 2. The Foetal Ballistocardiogram: The purpose of...