An implantable lead for a medical device with an isolated contact connection for connecting a conductor to a contact reduces the opportunity for conductor material to migrate to a contact or into a patient. In one embodiment, a method includes calculating the amplitude of each of the plurality of carrier signals of the inter-band carrier aggregated signals. The memory element carries stored data identifying the breathing tube. GPS dispatching is used to locate and alert personnel as well as to indicate the location of an event. The compositions can further include one or more additional ingredients including active and inactive materials.