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Multiple peritricuspidal reentry tachycardias after cardiac infiltration by leukaemia: a case report

Iwanari Kawamura1, Seiji Fukamizu1, Satoshi Miyazawa1

  • 1Department of Cardiology, Tokyo Metropolitan Hiroo Hospital, 2-34-10 Ebisu, Shibuya-ku, Tokyo, Japan.

European Heart Journal. Case Reports
|August 27, 2019
PubMed

Insights

This case study highlights rare atrial tachycardia in a patient with a history of acute lymphoblastic leukemia (ALL). Long-term cardiac effects after ALL treatment require further investigation.

Area of Science:

  • Cardiology
  • Oncology
  • Electrophysiology

Background:

  • Cardiac involvement by malignant lymphocytic neoplasms is rare.
  • Cardiotoxicity in the chronic phase post-treatment for leukemia is poorly understood.
  • Leukemic cardiac infiltration often resolves after remission.

Purpose of the Study:

  • To describe a rare case of cardiac electrophysiological abnormalities in a patient in complete remission of acute lymphoblastic leukemia (ALL).
  • To investigate symptomatic atrial tachycardia (AT) in the chronic phase after ALL treatment.

Main Methods:

  • Electrophysiologic study with high-density (HD) mapping was performed.
  • Catheter ablation was conducted for symptomatic atrial tachycardia.
  • Analysis of cardiac electrical activity and conduction in a patient with a history of leukemia.

Main Results:

  • The patient presented with recurrent palpitations due to symptomatic atrial tachycardia (AT).
  • HD mapping revealed two types of peritricuspid AT.
  • Low voltage and conduction delay were observed in the right atrium.

Conclusions:

  • Cardiac infiltration by leukemia can lead to persistent or late-onset electrophysiological abnormalities.
  • This case demonstrates multiple peritricuspid reentry tachycardias in a patient with a history of ALL.
  • High-density mapping is valuable for characterizing complex arrhythmias post-leukemia treatment.
Abstract

Keywords:
Atrial flutterCase reportInfiltrationLeukaemiaMacro reentryRhythmia mapping system

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