Open Access

CASE REPORT

Appropriate Heart Rate in a Patient with Repaired Tetralogy of Fallot

by Aya Miyazaki^1,2,*, Hideki Uemura², Yasuyo Takeuchi³, Junya Tomida⁴, Yasuo Ono¹, Yoshifumi Fujimoto¹, Norie Mitsushita¹, Akio Ikai¹

1 Department of Transitional Medicine, Division of Congenital Heart Disease, Shizuoka General Hospital, Shizuoka, Japan
2 Congenital Heart Disease Center, Nara Medical University, Kashihara, Japan
3 Department of Cardiology, Shizuoka General Hospital, Shizuoka, Japan
4 Department of Clinical Engineering, Shizuoka General Hospital, Shizuoka, Japan

* Corresponding Author: Aya Miyazaki. Email:

Congenital Heart Disease 2022, 17(6), 647-652. https://doi.org/10.32604/chd.2022.021837

Received 08 April 2022; Accepted 28 June 2022; Issue published 11 October 2022

Abstract

Appropriate heart rate in a failing pulmonary ventricle remains unknown, particularly in congenital heart disease with unique hemodynamics. A 71-year-old male with repaired tetralogy of Fallot and a pacemaker for a sinus node dysfunction suffered from heart failure symptoms with preserved left ventricular function. Simply changing the pacemaker’s lower rate from 60 to 75 bpm, New York Heart Association classification improved from III to II, and hemodynamic parameters drastically improved. We regarded this case as informative. Appropriate heart rate could be higher in congenital patients with failing right and non-failing left ventricles than in adults with malfunctioning LV.

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