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Sugrue A, Ibrahim R, Lu M, Bhatia NK, Alkukhun L, Adewumi J, Schaller RD, Marchlinski FE, D'Souza B, Nazer B, Tzou W, Merchant FM, Frankel DS. Impact of Median Sternotomy on Safety and Efficacy of the Subcutaneous Implantable Cardioverter Defibrillator. Circ Arrhythm Electrophysiol 2023; 16:468-474. [PMID: 37485688 DOI: 10.1161/circep.123.011867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 07/16/2023] [Indexed: 07/25/2023]
Abstract
BACKGROUND Subcutaneous implantable cardioverter defibrillators (S-ICDs) are an attractive alternative to transvenous ICDs among those not requiring pacing. However, the risks of damage to the S-ICD electrode during sternotomy and adverse interactions with sternal wires remain unclear. We sought to determine the rates of damage to the S-ICD lead during sternotomy, inappropriate shocks from electrical noise due to interaction with sternal wires, and failure to terminate spontaneous or induced ventricular arrhythmias. METHODS Retrospective, multicenter study of patients undergoing sternotomy before or after S-ICD implantation. Clinical, procedural, and device-related data were collected by each center and analyzed by the coordinating center. These data were compared with a historical control cohort of nonsternotomy patients. RESULTS Of 196 identified patients (52±16 years, 47 women), 166 underwent S-ICD implantation after sternotomy and 30 sternotomy after S-ICD. There was no damage to any lead among those who underwent sternotomy after S-ICD. Defibrillation threshold testing was performed in 63% at implant, with 91% first shock success. During a median follow-up of 29 months (range, 1-188), S-ICD first shocks successfully terminated spontaneous ventricular arrhythmias in 31 of 32 patients (97%). Inappropriate shocks occurred in 22 patients, most commonly related to T wave oversensing (n=14). Compared with the nonsternotomy controls, there were no differences in rates of first shock success for induced or spontaneous arrhythmias or rate of inappropriate shocks. CONCLUSIONS Sternotomy before or after S-ICD does not confer additional risk relative to a historical control group without sternotomy.
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Affiliation(s)
- Alan Sugrue
- Division of Cardiovascular Medicine, Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia (A.S., R.D.S., F.E.M., B.D., B.N., D.S.F.)
| | - Rand Ibrahim
- Section of Cardiac Electrophysiology, Emory University School of Medicine, Atlanta, GA (R.I., M.L., N.K.B., F.M.M.)
| | - Marvin Lu
- Section of Cardiac Electrophysiology, Emory University School of Medicine, Atlanta, GA (R.I., M.L., N.K.B., F.M.M.)
| | - Neal K Bhatia
- Section of Cardiac Electrophysiology, Emory University School of Medicine, Atlanta, GA (R.I., M.L., N.K.B., F.M.M.)
| | - Laith Alkukhun
- Knight Cardiovascular Institute, Oregon Health and Science University, Portland (L.A., B.N.)
| | - Joseph Adewumi
- Division of Cardiovascular Medicine, Cardiac Electrophysiology Section, University of Colorado Anschutz Medical Campus, Aurora (J.A., W.T.)
| | - Robert D Schaller
- Division of Cardiovascular Medicine, Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia (A.S., R.D.S., F.E.M., B.D., B.N., D.S.F.)
| | - Francis E Marchlinski
- Division of Cardiovascular Medicine, Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia (A.S., R.D.S., F.E.M., B.D., B.N., D.S.F.)
| | - Benjamin D'Souza
- Division of Cardiovascular Medicine, Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia (A.S., R.D.S., F.E.M., B.D., B.N., D.S.F.)
| | - Babak Nazer
- Division of Cardiovascular Medicine, Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia (A.S., R.D.S., F.E.M., B.D., B.N., D.S.F.)
- Knight Cardiovascular Institute, Oregon Health and Science University, Portland (L.A., B.N.)
| | - Wendy Tzou
- Division of Cardiovascular Medicine, Cardiac Electrophysiology Section, University of Colorado Anschutz Medical Campus, Aurora (J.A., W.T.)
| | - Faisal M Merchant
- Section of Cardiac Electrophysiology, Emory University School of Medicine, Atlanta, GA (R.I., M.L., N.K.B., F.M.M.)
| | - David S Frankel
- Division of Cardiovascular Medicine, Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia (A.S., R.D.S., F.E.M., B.D., B.N., D.S.F.)
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van der Stuijt W, Smeding L, Knops RE. High shock impedance during subcutaneous implantable defibrillator generator replacements: Author's reply. Europace 2021; 24:350-351. [PMID: 34626183 PMCID: PMC8824512 DOI: 10.1093/europace/euab205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 07/19/2021] [Indexed: 11/12/2022] Open
Affiliation(s)
- Willeke van der Stuijt
- Department of Clinical and Experimental Cardiology, Amsterdam UMC, Location AMC, Room C0-333, PO Box 22700, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Lonneke Smeding
- Department of Clinical and Experimental Cardiology, Amsterdam UMC, Location AMC, Room C0-333, PO Box 22700, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Reinoud E Knops
- Department of Clinical and Experimental Cardiology, Amsterdam UMC, Location AMC, Room C0-333, PO Box 22700, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
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