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  • Title: A randomised cross-over study on the haemodynamic effects of oral dofetilide compared with oral sotalol in patients with ischaemic heart disease and sustained ventricular tachycardia.
    Author: Boriani G, Biffi M, Bacchi L, Martignani C, Zannoli R, Butrous GS, Branzi A.
    Journal: Eur J Clin Pharmacol; 2002 Jun; 58(3):165-9. PubMed ID: 12107600.
    Abstract:
    OBJECTIVE: To assess the haemodynamic effects of short-term treatment with dofetilide in comparison with sotalol in patients with ischaemic heart disease. METHODS: Twelve patients with ischaemic heart disease and sustained ventricular tachycardia were treated with dofetilide [500 microg twice daily (b.i.d.)] or sotalol (160 mg b.i.d., randomised sequence separated by wash-out period) for 3-5 days. Right-heart catheterisation was performed at baseline and at the end of each short-term treatment phase. RESULTS: The main findings were a significant reduction in heart rate, mean systemic pressure and cardiac index (-13%) during treatment with sotalol. Conversely, cardiac index increased significantly during dofetilide (mean percentage change 11%) with no effect on heart rate and systemic blood pressure. CONCLUSIONS: Oral dofetilide exerts favourable haemodynamic effects in comparison with D,L-sotalol following short-term oral treatment. In view of these observations, the use of dofetilide may be proposed also in patients with ventricular tachyarrhythmias associated with impaired left-ventricular function. Whether the haemodynamic differences between dofetilide and D,L-sotalol are the basis for differences in tolerability remains to be evaluated.
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