#$%^&*AU2008207672B220131031.pdf#####ABSTRACT A method fior use in analysing impedance measurements perforIcd on a subject. The method includes, in a processing system, determining a change in impedance, as a subject 5 undergoes call' extension or exercise and determining an indicator using the change impedance, the indicator being indicative oF an ejection volume to allow assessment of CMP function.1/10 100 105' I103 104 102 2 5 A 1 2BA--, -2 3 118A~ 118B 117A] 115 117BA L 11 3A 113B Fig. 1