The treatment of kala-azar in the Sudan with sodium stibogluconate: a randomized trial of three dosage regimens

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Abstract
In a randomized study in the Sudan, 3 different regimens of sodium stibogluconate were compared in patients with parasitologically confirmed kala-azar (visceral leishmaniasis): 10 mg/kg for 30 d (38 patients), 20 mg/kg for 30 d (29 patients), and 20 mg/kg for 15 d (37 patients). Treatment failures were defined as death, partial response, relapse, or the development of post-kala-azar dermal leishmaniasis. The hazard ratio for failure of 20 mg/kg for 30 d vs. 10 mg/kg for 30 d 2.1 (95% confidence interval [CI] = 0.6, 7.6) and for 20 mg/kg for 15 d vs. 10 mg/kg for 30 d it was 1.7 (95% CI = 0.5, 6.1). No significant difference was detected between the 3 regimens in the rate of return to normal of haematological criteria, regression of spleen size, or weight gain. After 15 d treatment parasite clearance with 20 mg/kg for 30 d and 20 mg/kg for 15 d was more profound than with 10 mg/kg for 30 d (P < 0.05), but the difference was no longer present at the end of treatment. Further investigation of the effectiveness of short, intensive treatment regimens in the treatment of kala-azar is warranted.

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