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Query: UMLS:C0024530 (malaria)
 44,886 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

In sub-Saharan Africa, anaemia in pregnancy results from multiple causes including malaria, iron deficiency and haemoglobinopathies. In a cross-sectional study among 530 pregnant women in Ghana in November-December 1998, red blood cell indices were analysed with respect to malaria, serum concentrations of ferritin and C-reactive protein (CRP), and the haemoglobin and alpha-globin genotypes. Anaemia (haemoglobin [Hb] < 11 g/dL) was found in 54% of the women; 63% harboured malaria parasites at predominantly low numbers. Ferritin levels were considerably influenced by malaria and inflammatory processes (CRP > 0.6 mg/dL). Depending on the definition applied, the prevalence of iron deficiency ranged between 5% and 46%. The HbAS trait was observed in 14%, HbAC and elevated HbF in 7% each, and sickle cell disease in 1%. Heterozygous beta-thalassaemia was present in 1% of the women and alpha(+)-thalassaemia in 33% (29% heterozygous, 4% homozygous). Women with HbAS had higher malaria parasite densities than those with HbAA. In individuals with highly elevated HbF (> 10%), parasitaemia occurred in 27% only. Low gravidity, second trimester of pregnancy, malaria, raised CRP levels, and homozygous alpha(+)-thalassaemia were independent risk factors for anaemia in multivariate analysis. alpha(+)-Thalassaemia, however, was associated with a lesser degree of malarial anaemia when compared to non-thalassaemic women. Iron deficiency appears not to be a major health problem in this population. Haemoglobinopathies are common but, except for homozygous alpha(+)-thalassaemia, do not substantially contribute to anaemia in pregnancy. alpha(+)-Thalassaemia ameliorates malarial anaemia in pregnant women.
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PMID:Anaemia in pregnant Ghanaian women: importance of malaria, iron deficiency, and haemoglobinopathies. 1113 70

A descriptive cross-sectional study was carried out among pregnant women attending antenatal care at the district hospital, with suspected clinical manifestation of malaria in order to determine the prevalence of anemia and malaria among pregnant women and to determine any correlation between degree of anemia and degree of malaria parasitemia in pregnancy with malaria infection. This is a quantitative research method using face-to-face questionnaire. This study was undertaken at the district hospitals of Vientiane Prefecture and Vientiane Province. Sixty-eight pregnant women with suspected malarial clinical manifestations attending the antenatal care at these hospitals were recruited during June - October, 1998. The subjects were asked about their sociodemographic, socio-economic characteristics, gravida and parity, gestational age, last pregnancy and past history of hematology diseases. Blood samples (dry smear for thick and thin blood films) were examined at the same time for Plasmodium falciparum. The study showed that the prevalence of anemia (Hb < 11 g/dl) and severe anemia (Hb 4-6.9 g/dl) in the total sample population was 48.5% and 8.8% respectively. However, the prevalence of anemia among pregnant women with malaria was 68.75% compared to those without malaria infection (42.31%), but the difference was not statistically significant (p=0.117). A plausible explanation could be small sample size. The prevalence of severe anemia in pregnancy with malaria parasitemia was 18.8% compared to those without parasitemia (5.8%). The difference was not statistically significant (p=0.102). The difference of the mean hemoglobin level in falciparum positive cases and falciparum negative cases was clinically and statistically significant (RR = 1.63 and p=0.00679). There was some evidence of a negative correlation between the degree of anemia and parasitemia count (r= -0.19 and r2= -0.04). In conclusion this population had high prevalence of anemia in pregnant women and P. falciparum may be the main factor associated with anemia. There is a need to investigate other causes of anemia among pregnant women. Our results suggest that frequent and regular antenatal monitoring is necessary for the pregnant women. They should be encouraged to attend antenatal clinics through health education, increased health personnel awareness of proper management for the pregnant women with fevers from malarial endemic areas. There is a need for further research in this area in order to obtain adequate sample size.
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PMID:A study of anemia in pregnant women with Plasmodium falciparum at district hospitals in Vientiane, Lao PDR. 1141 68

The impact of insecticide-treated bednet use on malaria and anaemia in pregnancy was assessed, as a supplementary study, in a major WHO/TDR-supported bednet trial in northern Ghana between July 1994 and April 1995. The study area was divided into 96 clusters of compounds, with 48 clusters being randomly allocated to intervention. All pregnant women were included in the study but the focus was on primigravidae and secundigravidae. 1961 pregnant women were recruited into the study--1033 (52.7%) in the treated bednet group and 928 (47.3%) in the no net group. 1806 (92.1%) had blood taken for malaria microscopy and haemoglobin determination in the third trimester. Pregnancy outcomes were reported for 847 women. The characteristics of women in intervention and control groups were comparable. The odds ratios, with 95% confidence interval (CI), for different study endpoints were, for Plasmodium falciparum parasitaemia--0.89 (0.73, 1.08), for anaemia--0.88 (0.70, 1.09), for low birthweight (LBW)--0.87 (0.63, 1.19), indicating no benefit for treated bednet use. Effective net use by parity varied from 42% in primigravidae to 63% in multigravidae, in spite of free nets and insecticide impregnation. The main reasons for not using a net were warm weather and perceived absence of mosquito biting. Chloroquine use in pregnancy was low and comparable in both groups. Implications of findings for malaria control in pregnancy and further research are discussed.
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PMID:The impact of insecticide-treated bednets on malaria and anaemia in pregnancy in Kassena-Nankana district, Ghana: a randomized controlled trial. 1155 33

An estimated 50% of pregnant women in Africa are anemic-- a condition that has been linked to intrauterine growth retardation, increased perinatal mortality, low birthweight, compromised immunity, and possible psychomotor and cognitive impairments. In tropical Africa, iron and folate deficiencies and malaria are the major causes of anemia in pregnancy. Iron deficiency anemia results from a combination of dietary insufficiency, excessive requirements associated with multiparity, and chronic blood loss from hookworm infestation. An essential component of maternal-child health services in Africa is prevention of anemia and therapeutic management once severe anemia is documented. Since 35% of nonpregnant African women are anemic, many women will enter pregnancy with inadequate iron stores. Thus, the prophylactic dose of iron should be at least 120 mg/day rather than the usual 60 mg dose. Unfortunately, increased dosages of iron increase the side effects of constipation and nausea, so careful counseling is necessary to ensure compliance. Folic acid, which has no side effects, should be administered in doses of 1.5 mg/day. To reduce the risk of malaria, a therapeutic dose of chloroquine should be administered at the 1st prenatal visit (600 mg for 2 days and 300 mg on the 3rd day) followed by proguanil (100 mg/day) until delivery. In cases where anemia persists or emerges, the iron dose should be increased to 200 mg of ferrous sulfate 3 time/day (180 m,g of elemental iron) and 5 mg of folic acid should be provided. Blood transfusion should be used sparingly and only in severe cases, given the risk of transmission of human immunodeficiency virus.
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PMID:Towards a more effective management of pregnancy related anaemias in Africa. 1231 81

Tanzania is an area of moderate to high risk for severe anaemia during pregnancy. There is extensive literature examining the consequences of severe anaemia for pregnant women, but the impact this problem has on their infants in malaria-endemic regions is poorly understood. Between 1999 and 2001 we used a demographic surveillance system in the Kilombero Valley, Tanzania to link morbidity and socio-economic status data for 301 pregnant women to the survival of 365 days of their singleton babies, looking for evidence of an association between infant mortality and maternal haemoglobin (Hb). The hazards ratio for infant mortality amongst women who had been severely anaemic in pregnancy (Hb < 8 g/dl) was 3.1 [95% confidence interval (CI) 1.1-9.1, P = 0.04] compared with women with Hb above this level after controlling for other factors. Prevention of anaemia in pregnancy may lead to an improvement in infant survival.
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PMID:Anaemia in pregnancy and infant mortality in Tanzania. 1504 May 64

Anaemia in pregnancy has been associated with maternal morbidity and mortality and is a risk factor for low birthweight. The importance of malaria as a major cause of anaemia in pregnancy in malaria endemic areas has not been fully elucidated. In two cross-sectional studies of pregnant women at antenatal enrolment and at delivery, we determined the prevalence of anaemia and assessed some risk factors associated with anaemia such as malaria parasitaemia and parity, in women from a malaria endemic area of south western Cameroon. Of the 1118 women whose Hb levels were analysed at first antenatal enrolment, 68.9% were anaemic (Hb<11.0 g/dL) although only 1.3% were severely anaemic (Hb<7 g/dl). At delivery, 69.9% (485/694) of the parturient women were anaemic with 4.3% having severe anaemia. The mean haemoglobin (Hb) level of the pregnant women at enrolment and at delivery was not significantly different. The mean Hb level of malaria parasite positive pregnant women (P=0.0001) and parturient women (P=0.0001) were significantly lower than those who were malaria parasite free. Similarly, the mean Hb level of primigravidae at antenatal enrolment (P=0.0001) and at delivery (primiparae; P=0.0001) was markedly lower than that of multigravidae or multiparae, respectively. Of the anaemic cases, 52.1% were malaria positive while 47.9% were malaria free at enrolment. By contrast, 36.9% (179/485) of the anaemic cases were associated with maternal malaria parasitaemia while 37.3% (174/466) were associated with placental malaria parasitisation. Thus at delivery, anaemia was more common in women without malaria parasitaemia (P=0.0003) or whose placentas were malaria free (63.1% vs 36.9%; P<0.05). The prevalence of anaemia was significantly higher (OR=2.399; P=0.001) in mothers whose peripheral blood and placental biopsy were free of malaria parasites (69.9%) than in those whose peripheral and placental samples had malaria parasites. The mean birthweight and placental weights of newborns of mothers with and without anaemia were similar. In addition, there was no association between maternal anaemia and the incidence of low birthweight. Our study demonstrates a high prevalence of mild to moderate anaemia amongst the study population with relatively low incidences of severe anaemia. Furthermore, at delivery >50% of the anaemic cases were not associated with maternal or placental malaria parasitaemia suggesting the existence of other causes of anaemia in this community. This observation is important in developing a strategy for controlling anaemia in the community.
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PMID:Malaria infection in pregnancy and its effects on haemoglobin levels in women from a malaria endemic area of Fako Division, South West Province, Cameroon. 1614 24

Anaemia in pregnancy has serious consequences including maternal morbidity and impairment of infant cognitive development. Several authors have however reported inconsistent findings on risk factors for anaemia in pregnancy. This study was carried out to determine risk factors for anaemia in pregnancy among women at primary care level and document the contribution of HIV/AIDS to anaemia in pregnancy in low risk pregnant women at primary care level. A prospective study carried out among pregnant women attending the booking clinics of primary health care centres in Ibadan, Nigeria. HIV positive and HIV negative mothers were followed throughout pregnancy till delivery of their babies. History of use of iron, folate, Vitamin B complex and daraprim were obtained. Haemoglobin, malaria parasitaemia, and HIV serostatus were determined. Use of iron (P < 0.006), folate (P = 0.032), vitamin B complex (P = 0.001) and treatment for malaria (P = 0.05) significantly reduced the risk for anaemia in pregnancy. Malaria parasitaemia (P = 0.0001) significantly increased the risk of anaemia. However, use of daraprim and HIV seropositivity increased the risk of anaemia in pregnancy but not significantly. In a logistic regression analysis, iron (P = 0.001) and folate supplementation (P = 0.015) significantly protected against anaemia in pregnancy while malaria parasitaemia (P = 0.006) and HIV seropositivity (P = 0.015) were significant adverse risk factors. HIV is an additional risk factor for anaemia in pregnancy. Voluntary counseling and testing of pregnant women for HIV is therefore also indicated at primary care level to detect asymptomatic anaemia in pregnancy that may be due to HIV.
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PMID:HIV as an additional risk factors for anaemia in pregnancy: evidence from primary care level in Ibadan, Southwestern Nigeria. 1674 61

Malaria and anaemia contribute tremendously to maternal and prenatal morbidity and mortality. This study was carried out to document the magnitude of the problem in pregnancy with a view to identifying areas of intervention. The subjects were 108 consecutive pregnant women aged 18 to 44 years recruited from the antenatal clinics. 23 (21.3%) had malaria, 35 (32.4%) had anaemia while 20(18.5%) had both malaria and anaemia. The highest incidence of malaria occurred in the second trimester, while anaemia was most prevalent in the third trimester (62.86%) and among primigravidae (37.14%). All the cases of malaria were due to plasmodium falciparum. Six out of the 20 women with both anemia and malaria were admitted and treated. Two low birth weight babies were delivered among the malaria and anaemia group. The incidence rates of malaria and anaemia were 215 and 327 per 1000 pregnant women respectively while the incidence rate of anaemia due to malaria was 571 per 1000 infected pregnant women. There is a need for a more effective intervention to reduce the incidence of both malaria and anaemia in pregnancy.
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PMID:Malaria and anaemia in pregnancy in Enugu, south east Nigeria. 1720 19

It is suggested that helminths, particularly hookworm and schistosomiasis, may be important causes of anaemia in pregnancy. We assessed the associations between mild-to-moderate anaemia (haemoglobin >8.0 g/dl and <11.2 g/dl) and helminths, malaria and HIV among 2507 otherwise healthy pregnant women at enrolment to a trial of deworming in pregnancy in Entebbe, Uganda. The prevalence of anaemia was 39.7%. The prevalence of hookworm was 44.5%, Mansonella perstans 21.3%, Schistosoma mansoni 18.3%, Strongyloides 12.3%, Trichuris 9.1%, Ascaris 2.3%, asymptomatic Plasmodium falciparum parasitaemia 10.9% and HIV 11.9%. Anaemia showed little association with the presence of any helminth, but showed a strong association with malaria (adjusted odds ratio (AOR) 3.22, 95% CI 2.43-4.26) and HIV (AOR 2.46, 95% CI 1.90-3.19). There was a weak association between anaemia and increasing hookworm infection intensity. Thus, although highly prevalent, helminths showed little association with mild-to-moderate anaemia in this population, but HIV and malaria both showed a strong association. This result may relate to relatively good nutrition and low helminth infection intensity. These findings are pertinent to estimating the disease burden of helminths and other infections in pregnancy. [Clinical Trial No. ISRCTN32849447].
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PMID:Associations between mild-to-moderate anaemia in pregnancy and helminth, malaria and HIV infection in Entebbe, Uganda. 1755 83

This prospective study was carried out between June 2005 and June 2006, to determine the prevalence and determinants of anaemia among pregnant women attending a tertiary Sahelian Hospital in Northeastern Nigeria. A total of 1,040 pregnant women enrolled at their first antenatal visit were monitored through pregnancy for anaemia. The overall prevalence of anaemia, malaria parasitaemia and schistosomiasis was 72.0%, 22.1% and 3.8%, respectively. Mild, moderate and severe anaemia constituted 31.8%, 39.4% and 0.9%, respectively. Anaemia was most common among the multipara and women presenting in late stages of pregnancy. More multipara and primigravidae had malaria parasitaemia than grandmultipara. Schistosomiasis, malaria infestation and a short birth interval as well as illiteracy are additional risk factors for anaemia in pregnancy. This study confirms the high prevalence of anaemia in pregnancy in this area. Appropriate intervention strategies are necessary to reduce the prevalence of anaemia.
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PMID:Anaemia in pregnancy: a cross-sectional study of pregnant women in a Sahelian tertiary hospital in Northeastern Nigeria. 1799 91


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