The American Heart Hospital Journal


dysfunction. A recent retrospective study comparing patients with TIC and matched patients with idiopathic dilated cardiomyopathy has shown that a LV diastolic dimension of ≤61mm predicted TIC with a sensitivity of 100% and specificity of 71.4%.10


Conclusion


TIC is an under-reported reversible form of dilated cardiomyopathy. Our case clearly demonstrates the huge


1. Kasper EK, Agema WR, Hutchins GM, et al., The causes of dilated cardiomyopathy: a clinicopathologic review of 673 consecutive patients, J Am Coll Cardiol, 1994;23:586–90.


2. Felker GM, Thompson RE, Hare JM, et al., Underlying causes and long term survival in patients with initially unexplained cardiomyopathy, N Eng J Med, 2000;342:1077–84.


3. Umana E, Solares, CA, Alpert MA, Tachycardia induced cardiomyopathy, Am J Med, 2003;114:51–5.


4. Packer DL, Brady GH, Worley SJ, et al., Tachycardia-induced cardiomyopathy: a reversible form of left ventricular dysfunction, Am J Cardiol, 1986;57:563–70.


5. Leman RB, Gillette PC, Zinner AJ., Resolution of congestive cardiomyopathy caused by supraventricular tachycardia using amiodarone, Am Heart J, 1986;112:622–4.


6. Shinbane JS, Wood MA, Jensen N, et al., Tachycardia induced


Case Report


beneficial effects on cardiac function of heart rate control in this condition and provides a reminder that TWI post-tachycardia can be due to a ‘cardiac memory’ effect and does not necessarily imply coronary ischaemia. Catheter ablation—a curative procedure—was carried out to prevent further recurrences of the SVT, but recovery of LV function was already in progress after SR was restored. TIC should be considered in all unexplained LV dysfunctions accompanied by a persistent tachyarrhythmia. n


cardiomyopathy: a review of animal models and clinical studies, J Am Coll Cardiol, 1997;29:709–15.


7. Fenelon G, Wijns W, Andries E, Brugada P, Tachycardiomyopathy: mechanisms and clinical implications, Pacing Clin Electrophysiol, 1996;19:95–106.


8. Paparella N, Ouyang F, Fuca G, et al., Significance of newly acquired negative T waves after interruption of paroxysmal reentrant supraventricular tachycardia with narrow QRS complex, Am J Cardiol, 2000;85:261–3.


9. Watanabe H, Okamura K, Chinushi M, et al., Clinical characteristics, treatment, and outcome of tachycardia induced cardiomyopathy, Int Heart J, 2008;49:39–47.


10. Jeong YH, Choi KJ, Song JM, et al., Diagnostic approach and treatment strategy in tachycardia-induced cardiomyopathy, Clin Cardiol, 2008;31:172–8.


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Tachycardia-induced Cardiomyopathy—A Fully Reversible Phenomenon


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