Federico Cantini

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Atrial fibrillation (AF) is the most common cardiac arrhythmia and entails an increased risk of thromboembolic events. Prediction of the termination of an AF episode, based on noninvasive techniques, can benefit patients, doctors and health systems. The method described in this paper is based on two-lead surface electrocardiograms (ECGs): 1-min ECG(More)
In the context of HRV analysis, we evaluated the information content of two measures that can easily be derived from the classical RR time-domain indexes. The two measures are: 1) the ratio sd/rmssd, where sd is the RR standard deviation and rmssd is the root mean square of squared differences of consecutive RR beats; and 2) the ratio sd2/sd1, where sd2 and(More)
The PhysioNet Challenge 2004 addresses two different goals: to separate the persistent atrial fibrillation (AF) from the paroxysmal AF (event 1) and, in case of paroxysmal AF, to identify the one-minute ECG strip just before the termination of the AF episode (event 2). Both events were approached through the separation of the atrial activity by the(More)
Congestive heart failure is a severe chronic disease often associated with disorders that alter the mechanisms of excitation-contraction coupling that may result in an asynchronous left ventricular motion which may further impair the ability of the failing heart to eject blood. In recent years a therapeutic approach to resynchronize the ventricles (cardiac(More)
The ultrastructure of Vitis vinifera seeds from different archaeological sites was studied. Preservation status differed between sites. Preliminary investigations of grape seeds from Poggio Bacherina (Chianciano Terme, Siena) and Miranduolo (Chiusdino, Siena) showed collapsed or charred tegument, making this material suitable for morphometric studies only.(More)
Understanding planetary atmosphere-surface exchange and extra-terrestrial-surface formation processes within our Solar System is one of the fundamental goals of planetary science research. There has been a revolution in planetary surface observations over the last 15 years, especially in 3D imaging of surface shape. This has led to the ability to overlay(More)
Ventricular repolarization analysis allows extraction from the ECG signal of quantitative indexes (namely the QT interval), of prognostic value in unselected populations and cardiac patients, being related with arrhythmic risk. Several attempts to improve automatic ECG waveform detection have been accomplished, using signal derivatives, digital filtering,(More)
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