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Advanced atrioventricular block and left bundle branch block in a patient with coronary artery fistula
  1. Ryohei Ono,
  2. Sho Okada,
  3. Mari Kitagawa,
  4. Hiroyuki Takaoka,
  5. Hideyuki Miyauchi and
  6. Yoshio Kobayashi
  1. Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, Chiba, Japan
  1. Correspondence to Dr Ryohei Ono; ryohei_ono_0820{at}yahoo.co.jp

Abstract

Coronary artery fistulas are abnormal vascular conduits, rarely related to atrioventricular conduction abnormalities. We report the case of a 52-year-old woman who presented with dyspnoea on exertion. Her ECG revealed advanced atrioventricular block and left bundle branch block. CT scans confirmed two fistulas, from the conus branch of right coronary artery and from the left anterior descending coronary artery, into the pulmonary artery. The patient underwent pacemaker implantation. To date, only nine patients with different degrees of heart blocks associated with coronary artery fistulas have been reported. Herein, we review and summarise previously reported cases of different degrees of heart blocks associated with coronary artery fistulas.

  • arrhythmias
  • pacing and electrophysiology

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Footnotes

  • Contributors RO and SO contributed equally to this paper. RO and SO: Contributed to patient management, conception and design of case report; acquisition, analysis and interpretation of data and drafting and revising the article. MK, HT, HM and YK: analysis and interpretation of data and drafting and revising the article. All authors gave final approval of the article and have agreed to be accountable for all aspects of the work.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Patient consent for publication Obtained.

  • Provenance and peer review Not commissioned; externally peer reviewed.