A method and system are presented for use in determining a patient's heart condition. First and second data are provided, where the first data is indicative of the patient's heart rate, and the second data is indicative of bioimpedance peak value during a cardiac cycle. A relation between a certain predetermined value and a product of the first and said second data is determined, where such relation is indicative of the patient's left ventricular condition, enabling to identify a left ventricular dysfunction.
