A system for heart performance characterization and abnormality detection includes an interface for receiving an electrical signal comprising a pressure indicative waveform indicating a heart blood pressure of a patient over a heart beat cycle. A timing detector determines multiple different time periods in at least one heart cycle from the pressure indicative waveform. A patient monitor monitors the multiple different time periods and in response to detection of a variation in at least one of the multiple different time periods exceeding a predetermined threshold or range, generates an alert message associated with the variation.