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  • Title: [A case of nonobstructive hypertrophic cardiomyopathy associated with ventricular tachycardia and sick sinus syndrome].
    Author: Kanda A, Watanabe I, Kondo K, Kojima T, Hibiya K, Saito S, Ozawa Y, Yasugi T.
    Journal: Kokyu To Junkan; 1992 Oct; 40(10):1035-8. PubMed ID: 1439257.
    Abstract:
    We examined, a 64 year old man with hypertrophic nonobstructive cardiomyopathy (HNCM) accompanied with dizziness. Twenty-four hour ECG monitoring showed sinus bradycardia and sinoatrial block. Electrophysiologic study demonstrated inducible sustained ventricular tachycardia (VT) by continuous rapid high right atrum pacing during which systolic blood pressure fell to 40 mmHg. Induced VT degenerated into ventricular fibrillation in ten seconds. We implanted a DDD pacemaker for sick sinus syndrome (SSS) and administrated 90mg/day of diltiazem for VT. Treadmill exercise test was carried out while the patient was taking diltiazem and no arrhythmia was induced. This case of HNCM is rare in that he presented both sick sinus syndrome and sustained VT.
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