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Electrocardiographic study in Ghanaian children with uncomplicated malaria, treated with artesunate-amodiaquine or artemether-lumefantrine.

Abstract：

BACKGROUND:Several anti-malarial drugs are associated with adverse cardiovascular effects. These effects may be exacerbated when different anti-malarials are used in combination. There has been no report yet on the potential cardiac effects of the combination artesunate-amodiaquine. METHODS:Electrocardiographic (ECG) intervals in Ghanaian children with uncomplicated malaria treated with artesunate-amodiaquine (n=47), were compared with that of children treated with artemether-lumefantrine (n=30). The ECG measurements were repeated one, two, three, seven and 28 days after treatment. The ECG intervals of artesunate-amodiaquine treated subjects were correlated with plasma concentrations of desethylamodiaquine (DEAQ), the main metabolite of amodiaquine. RESULTS:The mean ECG intervals were similar in both groups before treatment. After treatment (day 3), ECG intervals changed significantly from baseline in all subjects, but there were no differences between the two treatment groups. A significantly higher proportion of children treated with artesunate-amodiaquine developed sinus bradycardia compared with artemether-lumefantrine treated subjects (7/47 vs 0/30; χ² p=0.03). Subjects who developed bradycardia were significantly older, and had higher DEAQ concentrations than those who did not develop bradycardia. The proportion of subjects with QTc interval prolongations did not differ significantly between the groups, and no relationship between prolonged QTc intervals and DEAQ levels were observed. No clinically significant rhythm disturbances were observed in any of the subjects. CONCLUSION:Artesunate-amodiaquine treatment resulted in a higher incidence of sinus bradycardia than artemether-lumefantrine treatment in children with uncomplicated malaria, but no clinically significant rhythm disturbances were induced by combining artesunate with amodiaquine. These findings, although reassuring, may imply that non-amodiaquine based artemisinin combination therapy may be preferable for malaria treatment in patients who are otherwise at risk of cardiac effects.

journal_name

Malar J

journal_title

Malaria journal

authors

Adjei GO,Oduro-Boatey C,Rodrigues OP,Hoegberg LC,Alifrangis M,Kurtzhals JA,Goka BQ

doi

10.1186/1475-2875-11-420

subject

Has Abstract

pub_date

2012-12-17 00:00:00

pages

420

issn

1475-2875

pii

1475-2875-11-420

journal_volume

pub_type

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Electrocardiographic study in Ghanaian children with uncomplicated malaria, treated with artesunate-amodiaquine or artemether-lumefantrine.