Giuseppe Doria

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The Transvalvular Impedance (TVI) is derived between atrial and ventricular pacing electrodes. A sharp TVI increase in systole is an ejection marker, allowing the hemodynamic surveillance of ventricular stimulation effectiveness in pacemaker patients. At routine follow-up checks, the ventricular threshold test was managed by the stimulator with the(More)
Dynamic pressure-volume methods with constant-pressure inflation are frequently used when assessing drug activity in the lungs of small animals where it is difficult to measure airway resistance and dynamic lung compliance. They all employ a ventilator which provides constant volume inflation and a breathing circuit designed to limit the airway pressure:(More)
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