Type of Cardiomyopathy Prior Device Related Procedures Indication for warfarin Outcome
Case 1
Non-ischemic, likely chemotherapy-related
- Dual chamber device - Unsuccessful coronary sinus lead placement
Atrial Fibrillation
- No complication - No change in EF - Functional improvement to NYHA class II
Case 2
Ischemic
- Biventricular device - Extraction of Biventricular device due to infection - Attempt at Biventricular device with failed coronary sinus lead placement
Atrial Fibrillation
- No complication - No follow-up EF - Functional status unchanged - Passed from renal failure
Case 3
Non-ischemic
- Single chamber device - Biventricular device placement complicated by CS lead dislodgement
Atrial Fibrillation
- No complications - EF improved from 25-30% to 40-45% - Functional improvement to NYHA class II
Case 4
Non-ischemic
- Dual chamber device - Unsuccessful coronary sinus lead placement
Atrial Fibrillation
- No complications - No follow-up since procedure
Case 5
Non-ischemic
- Biventricular device with elevated thresholds - His lead placed but developed elevated thresholds - Unsuccessful repeat CS lead placement
Atrial Fibrillation
- No complications - No follow-up EF - Functional improvement to NYHA class II