Anterior positioning on opposing sides of sternum
A subcutaneous cardiac device includes a subcutaneous electrode and a housing coupled to the subcutaneous electrode by a lead with a lead wire. The subcutaneous electrode is adapted to be implanted in a frontal region of the patient so as to overlap a portion of the patient's heart.
1. A method of terminating a cardiac arrhythmia in a patient comprising delivering an electrical stimulus between at least first and second implanted electrodes by using the first and second implanted electrodes as opposing poles for delivering the electrical stimulus, wherein:
the first implanted electrode is disposed on a lead assembly;
the second implanted electrode is on a housing for an implantable cardioverter defibrillator;
the lead assembly is coupled to the implantable cardioverter defibrillator;
the electrical stimulus is a defibrillation stimulus;
the housing is disposed at a position anterior to the patient's heart and on a first side of the patient's sternum; and
the first implanted electrode is subcutaneously disposed at a position anterior to the patient's heart and on a second side of the patient's sternum.
2. The method of claim 1 , wherein the housing is disposed to the left of the patient's sternum and the first implanted electrode is disposed to the right of the patient's sternum.
3. The method of claim 1 , wherein the housing is disposed to the right of the patient's sternum and the first implanted electrode is disposed to the left of the patient's sternum.
4. The method of claim 1 , wherein the housing is disposed at a location near and inferior to the patient's clavicle, and the first implanted electrode is disposed at a substantially horizontal position on the right side of the patient's sternum.
5. The method of claim 1 , wherein the housing is disposed at a pectoral position to the right of the patient's sternum, and the first implanted electrode is disposed at a substantially horizontal position to the left of the patient's sternum.
6. The method of claim 1 , wherein the housing is disposed at about the left inframammary crease, and the first implanted electrode is disposed at a substantially horizontal position to the right of the patient's sternum.
7. The method of claim 1 , wherein the housing is disposed at about the right inframammary crease, and the first implanted electrode is disposed at a substantially horizontal position corresponding to the top of the heart.