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Figure 1 Photographs showing the various components of the implantable ischemia detection system. (A) The implantable medical device, resembling a VVI pacemaker, is shown, attached to the lead adapter and a standard bipolar, screw-in, right ventricular lead. (B) Shows the external alerting device attached to the laptop computer, which is used for programming and data collection, via telemetry to the implantable medical device. The external alerting device has 2 light-emitting diodes: red light for emergency alerts and yellow light for "see your physician" alerts.