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A Case of Cardiomyopathy Induced by Inappropriate Sinus Tachycardia and Cured by Ivabradine
Author(s) -
WINUM PIERREFRANCOIS,
CAYLA GUILLAUME,
RUBINI MADELEINE,
BECK LIONEL,
MESSNERPELLENC PATRICK
Publication year - 2009
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.2009.02414.x
Subject(s) - ivabradine , medicine , cardiology , heart rate , tachycardia , sinus tachycardia , cardiomyopathy , refractory (planetary science) , angina , heart failure , blood pressure , myocardial infarction , physics , astrobiology
We present the case of a 67‐year‐old woman with cardiomyopathy induced by inappropriate sinus tachycardia (IST) and a particularly high average heart rate. The patient was resistant and/or intolerant to treatment with conventional rate‐slowing medications. We used ivabradine—a specific sinus node I f current inhibitor—and successfully lowered the heart rate (33 beats per minute mean heart rate decrease). Symptoms, systolic function, and heart rate variability parameters recovered dramatically. No side effect was noted. We suggest that ivabradine—evaluated in trials to treat stable angina—should be considered as a second‐line treatment in patients with very symptomatic and refractory IST.