Methods and devices for testing lead impedance in an implantable cardiac stimulus device. A resistor is placed in series with the lead impedance, and a predetermined or known voltage is applied to the resistor and lead impedance. The voltage across the resistor is measured, and it is then determined...http://www.google.com.au/patents/US7877139?utm_source=gb-gplus-sharePatent US7877139 - Method and device for implantable cardiac stimulus device lead impedance measurement
