Abstract: A method and system are presented for use in monitoring a subject's heart conditions such as ejection fraction and cardiac synchrony. For determination of the ejection fraction, ECG measured data is processed. This ECG measured data comprises a first measured data portion indicative of a first time profile of an electrical signal measured on a planar pair of electrodes applied on a patient during a measurement session and a second measured data portion indicative a second time profile of an electrical signal measured on a diagonal pair of electrodes applied to said patient during said measurement session. The processing comprises comparing the first and second data portions to identify a time shift between a predetermined event in the first and second time profiles.

Abstract: The invention provides a method and system for analyzing body sounds from one or more body organs. An array of transducers is fixed to the body surface over the organs from which body sounds are to be recorded. Analysis of the recorded sound signals includes dividing each signal into one or more time intervals and calculating an average of the signal in each time interval. A difference signal is calculated for each interval, where the difference signal is the difference of the recorded signal in the interval and the interval average. An energy assessment signal is then calculated in each interval using the difference signal. In an embodiment, the energy assessment signal is a standard deviation signal. The subject matter may be used to record and analyze cardiovascular sounds for diagnosing abnormal cardiovascular function, or for calculating an ejection fraction.