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      Ischemia Possibly Associated with High Degree Atrioventricular Block

      case-report

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          Abstract

          Conduction restoration in second- and third-degree atrioventricular (AV) block after revascularization in acute coronary syndrome (ACS) setting is well established, however this is not the case in non-ACS setting. We present a case of a patient referred for permanent pacemaker implantation, due to high degree AV block (HAVB), who restored his conduction possibly due to targeted revascularization. Thus, this case sheds insight in the reversibility potential of HAVB after revascularization in non-ACS patients, which although signified in current literature, is still far from being a recommendation, due to lack of robust scientific confirmation.

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          2021 ESC Guidelines on cardiac pacing and cardiac resynchronization therapy

          Michael Glikson, Jens Nielsen, Mads Brix Kronborg … (2021)
          Article 0 comments Cited 345 times – based on 0 reviews     Review now
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            Adverse effect of ventricular pacing on heart failure and atrial fibrillation among patients with normal baseline QRS duration in a clinical trial of pacemaker therapy for sinus node dysfunction.

            Michael O Sweeney, Anne Hellkamp, Kenneth Ellenbogen … (2003)
            Dual-chamber (DDDR) pacing preserves AV synchrony and may reduce heart failure (HF) and atrial fibrillation (AF) compared with ventricular (VVIR) pacing in sinus node dysfunction (SND). However, DDDR pacing often results in prolonged QRS durations (QRSd) as the result of right ventricular stimulation, and ventricular desynchronization may result. The effect of pacing-induced ventricular desynchronization in patients with normal baseline QRSd is unknown. Baseline QRSd was obtained from 12-lead ECGs before pacemaker implantation in MOST, a 2010-patient, 6-year, randomized trial of DDDR versus VVIR pacing in SND. Cumulative percent ventricular paced (Cum%VP) was determined from stored pacemaker data. Baseline QRSd 40%) and VVIR (HR 2.56 [95% CI, 1.48 to 4.43] for Cum%VP >80%). The risk of AF increased linearly with Cum%VP from 0% to 85% in both groups (DDDR, HR 1.36 [95% CI, 1.09, 1.69]; VVIR, HR 1.21 [95% CI 1.02, 1.43], for each 25% increase in Cum%VP). Model results were unaffected by adjustment for known baseline predictors of HF hospitalization and AF. Ventricular desynchronization imposed by ventricular pacing even when AV synchrony is preserved increases the risk of HF hospitalization and AF in SND with normal baseline QRSd.
            Article 0 comments Cited 315 times – based on 0 reviews     Review now
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              Incidence and predictors of right ventricular pacing-induced cardiomyopathy in patients with complete atrioventricular block and preserved left ventricular systolic function.

              Erich Kiehl, Tarek Makki, Rahul Kumar … (2016)
              Right ventricular (RV) pacing may worsen left ventricular cardiomyopathy in patients with reduced left ventricular ejection fraction (LVEF) and advanced atrioventricular block.
              Article 0 comments Cited 125 times – based on 0 reviews     Review now
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                Author and article information

                Contributors
                Dimitrios Siamkouris:
                ORCID: https://orcid.org/0000-0002-1064-2627
                Journal
                Journal ID (nlm-ta): Case Rep Cardiol
                Journal ID (iso-abbrev): Case Rep Cardiol
                Journal ID (publisher-id): CRIC
                Title: Case Reports in Cardiology
                Publisher: Hindawi
                ISSN (Print): 2090-6404
                ISSN (Electronic): 2090-6412
                Publication date Collection: 2023
                Publication date (Electronic): 19 August 2023
                Volume: 2023
                Electronic Location Identifier: 6676757
                Affiliations
                1Department of Cardiology, Dreifaltigkeits Hospital Lippstadt, Germany, Academic Teaching Hospital of Westfaelische Wilhelms University Muenster, Muenster, Germany
                23rd Department of Cardiology, Ippokrateio General Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
                Author notes

                Academic Editor: Manabu Shirotani

                Author information
                https://orcid.org/0000-0002-1064-2627
                Article
                DOI: 10.1155/2023/6676757
                PMC ID: 10460276
                SO-VID: c5e03882-1e47-4a76-b049-4b3110d31e32
                Copyright © Copyright © 2023 Dimitrios Siamkouris et al.
                License:

                This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                Date received : 9 December 2022
                Date revision received : 13 February 2023
                Date accepted : 3 July 2023
                Categories
                Subject: Case Report

                Data availability:

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