Coronary sinus lead with thermal sensor and method therefor

A method comprising:

• providing an implantable lead and an implantable electrical stimulation source;
• coupling at least one electrode with the implantable lead;
• coupling at least one thermal sensor with the implantable lead, including coupling a first thermal sensor and a second thermal sensor with the lead;
• placing the implantable lead within a coronary sinus of a heart and positioning the first thermal sensor within the coronary sinus, and positioning the second thermal sensor within a right atrium of a heart;
• coupling the implantable lead with the implantable electrical stimulation source;
• and
• measuring a myocardium temperature.

A method comprising:

• providing an over the wire implantable lead and an implantable electrical stimulation source;
• coupling at least a first and a second thermal sensor with the implantable lead;
• coupling at least one electrode with a portion of the implantable lead;
• placing the implantable lead within a coronary sinus of a heart;
• positioning the first thermal sensor within the coronary sinus, and positioning the second thermal sensor within a right atrium of the heart;
• measuring a myocardium temperature from the first thermal sensor within the coronary sinus of the heart;
• and
• pacing the heart with the lead, and adjusting delivery of pacing signals using the myocardium temperature measured within the coronary sinus.

A method comprising:

• providing an over the wire implantable lead and an implantable electrical stimulation source;
• coupling at least one thermal sensor with the implantable lead;
• coupling at least one electrode with a portion of the implantable lead;
• placing the implantable lead within a coronary sinus of a heart;
• positioning one or more of the at least one thermal sensor within the coronary sinus;
• measuring a myocardium temperature from the one or more thermal sensor within the coronary sinus of the heart;
• and
• pacing the heart with the lead, including providing pacing pulses to the at least one electrode when a decrease in temperature in the one or more thermal sensor within the coronary sinus is detected.