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Akhtar Z, Sohal M, Kontogiannis C, Harding I, Zuberi Z, Bajpai A, Norman M, Pearse S, Beeton I, Gallagher MM. Anatomical variations in Coronary Venous Drainage: Challenges and Solutions in Delivering Cardiac Resynchronisation Therapy. J Cardiovasc Electrophysiol 2022; 33:1262-1271. [PMID: 35524414 DOI: 10.1111/jce.15524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 04/20/2022] [Accepted: 05/03/2022] [Indexed: 11/27/2022]
Abstract
AIMS To investigate the abnormalities of the coronary venous system in candidates for cardiac resynchronization therapy (CRT) and describe methods for circumventing the resulting difficulties. METHODS From 4 implanting institutes, data of all CRT implants between October 2008-October 2020 were screened for abnormal cardiac venous anatomy, defined as an anatomical variation not conforming to the accepted 'normal' anatomy. Patient demographics, procedural detail and subsequent left ventricle (LV) lead pacing indices were collected. RESULTS From a total of 3548 CRT implants, 15 (0.42%) patients (80% male) of 72.2±10.6 years in age with a LV ejection fraction of 34±10.3% were identified to have had an abnormal cardiac venous anatomy over the study period. There were 13 cases of persistent left side superior vena cava (pLSVC), 5 of which had coronary sinus ostium atresia (CSOA) including 2 with an 'unroofed' coronary sinus (CS); 1 patient had a unique anomalous origin of the CS and 1 patient had an isolated CSOA. In total 14 patients (60% repeat attempt) had successful percutaneous implant under general anaesthesia (46.7%) via the cephalic vein (59.1%), using the femoral approach (53.3%) for levophase venography and/or pull-through, including 1 case of endocardial LV implant. Pacing follow-up over 37.64±37.6 months demonstrated LV lead threshold between 0.62-2.9 volts (pulsewidth 0.4-1.5 milliseconds) in all cases; 5 patients died within 2.92±1.6 years of successful implant. CONCLUSION CRT devices can be implanted percutaneously even in the presence of substantial abnormalities of coronary venous anatomy. Alternative routes of venous access may be required. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Zaki Akhtar
- Department of Cardiology, St George's University Hospital, London, UK.,Department of Cardiology, Ashford and St Peter's Hospital, Surrey, UK
| | - Manav Sohal
- Department of Cardiology, St George's University Hospital, London, UK
| | | | - Idris Harding
- Department of Cardiology, St George's University Hospital, London, UK
| | - Zia Zuberi
- Department of Cardiology, St George's University Hospital, London, UK.,Department of Cardiology, Royal Surrey County Hospital, Guildford, UK
| | - Abhay Bajpai
- Department of Cardiology, St George's University Hospital, London, UK
| | - Mark Norman
- Department of Cardiology, St George's University Hospital, London, UK.,Department of Cardiology, Frimley Park Hospital, Surrey, UK
| | - Simon Pearse
- Department of Cardiology, St George's University Hospital, London, UK
| | - Ian Beeton
- Department of Cardiology, Ashford and St Peter's Hospital, Surrey, UK
| | - Mark M Gallagher
- Department of Cardiology, St George's University Hospital, London, UK.,Department of Cardiology, Ashford and St Peter's Hospital, Surrey, UK
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