Patent ID: 7450989

Claim:
A pressure measurement device comprising: a pressure sensor adapted to perform pressure measurements in a left ventricle of a heart, wherein the pressure sensor is connected to a measurement unit to receive pressure measurement values obtained from said sensor, and a processing means adapted to determine, during a number of measurement periods, each measurement period including a number of heart cycles, a set of pressure values and a set of first order time derivative values determined from the set of pressure values, wherein said processing means also is adapted to calculate maximum first order time derivative values for each of the heart cycles during one measurement period, and to calculate a predefined parameter, wherein the predefined parameter is an average or median value of said maximum first order time derivative values from the one measurement period, wherein the pressure measurements are adapted to be performed during measurement periods related to different predetermined medical implant settings in a medical implant controlling application of stimulation pulses at least in the left and right ventricles of the heart, wherein the different predetermined medical implant settings include that of a VV-interval, and wherein an optimal medical implant device setting of the VV-interval is identified as a setting where the predefined parameter is maximal.