This method comprises the following steps: - acquiring a curve representative of a cardiac acoustic wave, or an acoustic curve； - acquiring a mechanogram curve representative of a blood pressure wave, or a pressure curve； - acquiring a curve representative of a cardiac electrical wave, or electrical curve； - coordinating the acoustic curve, the pressure curve and the electrical curve in order to estimate at least one parameter representative of a cardiovascular activity； - displaying the one or more parameters determined. According to the invention, at least one representative parameter is a duration repesentative of a cardiovascular activity, and this duration is measured by taking, as the start of this duration, one out of a point of the acoustic curve and a point of the pressure curve and, as the end of this duration, the other out of the point of the acoustic curve and the point of the pressure curve.
