A method for determining haemodynamic performance in a human or animal subject comprises receiving at a processor data representing haemodynamic variables measured from the subject over time. The claimed invention provides a needed therapy for a serious and debilitating disorder while avoiding complications such as bleeding tendency, toxicity and general side effects of currently available anti-coagulant agents. One or more formulas or functions may be automatically suggested as a user begins entering a formulafunction. A capacitor 130 is disposed in the cavity 121 and includes a pair of electrode groups 133E and 133F and a number of connection-to-IC capacitor bumps 131 connected to either one of the paired electrode groups 133E and 133F. The common electrodes connect some of the main-surface lines to one another in conduction states. Each of the L products are rounded to generate L rounded values.