Patent ID: 7904141

Claim:
A system for determining the left-ventricular ejection time T LVE of a heart of a subject, the system comprising: a first apparatus for measuring data representing one of thoracic electrical bioimpedance and thoracic electrical bioadmittance over time; at least one second apparatus selected from the group comprising: an apparatus for deriving plethysmogram data, an apparatus for deriving signal data representing the velocity of blood in an artery in the vicinity of the esophagus of the subject, an apparatus for deriving signal data representing the velocity of blood in radial artery of the subject, a first pressure sensor adapted to be non-invasively attached to the subject, said first pressure sensor for measuring data representing the blood pressure in an artery of the subject, a second pressure sensor adapted to be inserted into an artery of the subject, said second pressure sensor for measuring data representing the blood pressure in an artery of the subject, an apparatus for measuring data representing peripheral electrical bioimpedance, and an apparatus for measuring data representing peripheral electrical bioadmittance; and a device adapted to input a first value for T LVE determined from the data obtained by said first apparatus and at least a second value for T LVE determined from the data obtained by said at least one second apparatus, and to average all derived values of T LVE according to predetermined weights to determine T LVE .