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Effect of sulfadoxine-pyrimethamine resistance on the efficacy of intermittent preventive therapy for malaria control during pregnancy - A systematic review

terKuile, Feiko ORCID:, van Eijk, Anna and Filler, S. J. (2007) 'Effect of sulfadoxine-pyrimethamine resistance on the efficacy of intermittent preventive therapy for malaria control during pregnancy - A systematic review'. The Journal of the American Medical Association (JAMA), Vol 297, Issue 23, pp. 2603-2616.

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Context In malaria-endemic regions, strategies to control malaria during pregnancy rely on case management of malaria illness and anemia, and preventive measures such as insecticide-treated nets and intermittent preventive therapy (IPT).
Objective To determine the effect of increasing resistance to sulfadoxine-pyrimethamine on the efficacy of IPT during pregnancy in Africa.
Data Sources and Study Selection The 6 databases of MEDLINE, EMBASE, SCOPUS, LILACS, Cochrane CENTRAL, and the trial register and bibliographic database of the Malaria in Pregnancy Library were searched for relevant studies regardless of language, published between 1966 and December 2006. The reference lists of all trials identified were searched and researchers were contacted about relevant data. Nine trials of IPT with sulfadoxine-pyrimethamine during pregnancy in Africa were identified and matched by year and location with treatment studies of sulfadoxine-pyrimethamine among symptomatic children.
Data Extraction Data on the efficacy of IPT with sulfadoxine-pyrimethamine on placental and peripheral malaria, birth weight, and hemoglobin level/anemia were independently abstracted by 2 investigators. Sulfadoxine-pyrimethamine resistance was defined as the proportion of total treatment failures in symptomatic children by day 14.
Data Synthesis Four trials compared 2-dose IPT with sulfadoxine-pyrimethamine to case management or placebo in women during their first or second pregnancy. The IPT reduced placental malaria ( relative risk [RR], 0.48; 95% CI, 0.35-0.68), low birth weight ( RR, 0.71; 95% CI, 0.55-0.92), and anemia ( RR, 0.90; 95% CI, 0.81-0.99). The effect did not vary by sulfadoxine-pyrimethamine resistance levels ( range, 19%-26%). Efficacy of IPT with sulfadoxine-pyrimethamine was lower among women using insecticide-treated nets. Three trials compared 2-dose with monthly IPT with sulfadoxine-pyrimethamine during pregnancy. Among HIV-positive women in their first or second pregnancy, monthly IPT resulted in less placental malaria ( RR, 0.34; 95% CI, 0.18-0.64) and higher birth weight ( mean difference, 112 g; 95% CI, 19-205 g) over the range of sulfadoxine-pyrimethamine resistance tested (8%-39%). Among HIV-negative women, there was no conclusive additional effect of monthly dosing ( 2 trials; 24% and 39% resistance).
Conclusions In areas in which 1 of 4 treatments with sulfadoxine-pyrimethamine fail in children by day 14, the 2-dose IPT with sulfadoxine-pyrimethamine regimen continues to provide substantial benefit to HIV-negative semi-immune pregnant women. However, more frequent dosing is required in HIV-positive women not using cotrimoxazole prophylaxis for opportunistic infections.

Item Type: Article
Subjects: WA Public Health > Health Problems of Special Population Groups > WA 310 Maternal welfare
WC Communicable Diseases > Tropical and Parasitic Diseases > WC 765 Prevention and control
WQ Obstetrics > Pregnancy Complications > WQ 256 Infectious diseases
Digital Object Identifer (DOI):
Depositing User: Ms Julia Martin
Date Deposited: 19 Oct 2010 08:35
Last Modified: 07 Dec 2018 10:43


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