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Abstract text

An implantable medical device has a first module for performing telemetry communications with another device and a second module for delivering a high voltage therapy to a patient. The first module is configured to detect a communication error, and the second module is configured to determine a need for the therapy and to charge a capacitor in response to the need for the therapy. The second module is configured to suspend the capacitor charging in response to receiving a notification from the first module corresponding to detecting a communication error.