• heart
  • temporal frequency division preferably obtained from the thoracic impedance signal derived after temporal low-pass filtering and high-pass in order to identify the wave events B and X, which are used to determine the time ventricular ejection and dZ / dTmin for determining the stroke volume of the heart by conventional methods. (google.es)
  • In another embodiment, one determines the stroke volume by a new relationship between the product of a pair of impedances detected simultaneously on two opposite sides of the heart maxiumum heartbeat. (google.es)
  • Additionally, we have investigated the influence of blood volume change in the heart itself by a finite element method. (biomedsearch.com)
  • time
  • a set of sensors to measure forced vital capacity and forced expiratory volume by respectively measuring a total volume exhaled during performance of the forced expiration and a volume expired during a tracked time period. (google.com)
  • system
  • Can the renin-angiotensin system protect against stroke? (biomedsearch.com)
  • 4. A system according to claim 3 , wherein the pulmonary functional measures further comprise at least one of respiration rate, tidal volume and minute ventilation. (google.com)
  • 6. A system according to claim 5 , wherein the forced vital capacity and the forced expiratory volume are analyzed to characterize one of an obstructive respiratory pattern and a restrictive respiratory pattern. (google.com)