{"nct_id":"NCT03803995","title":"Mapping and Pacing of the His Bundle for Heart Failure Patients With Left Bundle Branch Block","status":"COMPLETED","status_verified_date":"2025-09","start_date":"2019-03-20","start_date_type":"ACTUAL","primary_completion_date":"2024-04-20","primary_completion_date_type":"ACTUAL","completion_date":"2024-04-26","completion_date_type":"ACTUAL","phases":["NA"],"tickers":["ABT"]}