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

The currently recognized toxic effects of quinine in humans are identified and the problems of management of overdosage of quinine are discussed. Quinine, available therapeutically as sulphate or hydrochloride salts, also is widely used in tonic water, and there are several case reports of allergic reactions to the drug when a patient has consumed the drug in this way. Another unintentional source of poisoning is its use as an adulterant in heroin for "street" use. This appears to be a problem in the US. Quinine, termed a "general protoplasmic poison" is toxic to many bacteria, yeasts, and trypanosomes, as well as to malarial plasmodia. Quinine has local anesthetic action but also is an irritant. The irritant effects may be responsible in part for the nausea associated with its clinical use. In addition it has a mild antipyretic effect. Several features are common to both an acute single overdose in self-poisoning and accumulation of quinine during therapy for malaria: together they are termed cinchonism. Auditory symptoms, gastrointestinal disturbances, vasodilatation, sweating, and headache occur with moderately elevated plasma quinine concentration. As these rise, increasingly severe visual disturbances and then cardiac and neurologic features occur. Mild nausea may be the only symptom, but with large overdoses profuse vomiting, abdominal pain, and diarrhea may occur. These result from a combination of the local irritant effect of quinine on the gut and the central effects of quinine on the chemoreceptor trigger zone. Vasodilatation and sweating are well recognized, and tinnitus is common. Visual symptoms usually are delayed, and blindness may not be discovered for a day or more. Aspirin-sensitive patients, and others, may develop angioedema by nonimmunological mechanisms in response to drugs, and quinine has been reported to produce pseudo-allergic reactions in aspirin-sensitive patients. Quinine also can cause drug-induced thrombocytopenia and purpura. In patients suffering with malaria due to "Plasmodium falciparum," anemia and acute intravascular hemolysis with renal failure are recognized complications. There appears to be little evidence in the literature in support of the folk tradition of quinine as an inducer of abortion. Quinine is known to cause deterioration in patients with myasthenia gravis and erythema multiforme, to stimulate insulin release in patients receiving treatment for falicparum malaria, and to be responsible at times for ataxia following moderate overdosage. Clinically, quinine poisoning is observed in 3 situations: self-poisoning; accidentally; and following use of quinine in excessive doses in the hope of achieving abortion. Treatment courses are reviewed.
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PMID:Quinine toxicity. 354 70

This review presents seven examples of effective drugs derived from the ancient Chinese therapeutics. They are artemisinin (qinghaosu) and its derivatives for malaria, henbane drugs for microcirculatory and other disturbances, tetrahydropalmatine as a dopamine receptor antagonist, yuanhuacine and yuanhuadine for abortion, trichosanthin for abortion, moles, and choriocarcinoma, indirubin for leukemia, and Tripterygium plants for autoimmune and various other diseases.
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PMID:Important Chinese herbal remedies. 360 15

Chloroquine prophylaxis for malaria was available free of charge to pregnant women in Saradidi, Kenya. The drug was supplied by village health helpers (VHH's). However, only 29.1% of 357 pregnant women seen in antenatal clinics from 1983 to 1984 were on chemoprophylaxis. One hundred and seven pregnant women not using antimalarial chemoprophylaxis from 22 villages were interviewed in June 1984 to determine the reasons. Age (mean 26.9 years), parity (mean 4.5 children), occupation (96.3% subsistence farmers and housewives) and education (median five to seven years) of the 107 respondents were similar to other women in the area. Previous pregnancies had occurred in 92 women; for 15 this was the first pregnancy. The last pregnancy had resulted in a live birth for 81 (88.0%), a stillbirth for nine (9.8%) and a miscarriage for two (2.2%); 21 (22.8%) of the 92 had experienced a miscarriage or stillbirth at some time (15 once, five twice and one woman four times). Malaria was the most frequent mentioned (28.6% of 21 women) cause of the last stillbirth or abortion. The major reason for not taking chemoprophylaxis was lack of awareness that the service was available (53.3% of 107 women). Other reasons were fear of chloroquine-induced itching (10.3%), the VHH had no drug (8.4%), the VHH had not advised her to take drug (8.4%), the woman was 'not sick' (7.5%), the woman was 'lazy' (6.5%), she had not been advised by clinic so was afraid to mix medicines (3.7%) and chloroquine was 'bad for pregnancy' (1.9%).(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Malaria chemoprophylaxis to pregnant women provided by community health workers in Saradidi, Kenya. I. Reasons for non-acceptance. 368 40

Serious defects in the living conditions of the vast majority of people in the tropics, rather than racial factors, are the underlying reasons why anaemia is common, why malaria is rampant and why the complications of sickle cell disease are so serious. Mass illiteracy, poor environmental hygiene and widespread poverty with all their implications explain why malaria eradication programmes have so far failed in tropical Africa and why basic health-care schemes have been difficult to establish. Pregnant women are very vulnerable to the effects of anaemia, malaria and sickle cell disease. However, appropriate use of folic acid and iron supplements as well as malarial chemosuppression succeeds in maintaining haemoglobin concentrations at reasonable levels during pregnancy. If, for whatever reason, the haemoglobin level falls to under 4.4 g/dl or the haematocrit value is 0.14 or less, anaemia becomes an obstetric emergency. Both maternal and fetal mortality rise sharply, maternal death being due to anaemic heart failure, fulminating bacterial infection and shock from even small loss at delivery or abortion. With the haemoglobin concentration as low as 4.4 g/dl, blood transfusion greatly improves maternal but not necessarily fetal prognosis. Additional cause of morbidity in sickle cell disease is painful crises, the control of which remains largely unsatisfactory. Now that sickle cell disease can be diagnosed early in intrauterine life the idea of aborting the affected fetuses as a means of controlling or reducing sickle cell disease is well within the means of developed countries, but it is a line of approach which developing countries cannot afford at present.
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PMID:Anaemia, malaria and sickle cell disease. 675 46

Maternal mortality is a three-step process (pregnancy, pregnancy-related complications, and death). Close birth spacing, early pregnancy, unwanted pregnancy, and access to family planning are determinants of maternal mortality. World Fertility Survey figures show that 35% of maternal deaths in Asia could be prevented if all women who did not want children had access to contraceptives. The status of women affects health during pregnancy. Many years of physical neglect and inequitable distribution of food, health care, and other resources effect stunting, an inadequately formed pelvis, low pre-pregnancy weight, anemia, and chronic illnesses such as malaria. Conditions such as aseptic abortion can be prevented. Clean delivery practices, proper management of the third stage of labor, and tetanus immunization are other preventive measures. Many complications are difficult to prevent and to predict; some studies have estimated that up to 50% of maternal deaths were to "low risk" women. The timing of detection of complication and the effectiveness and speed of treatment impact on survival. Intervention means preventing delays in seeking care, delays in reaching an appropriate facility (substantial numbers of deaths occur en route), and delays in receiving treatment, even after reaching the appropriate facility. The timing between the occurrence of the emergency and death involves sociocultural, logistic, and health services factors. When safe motherhood efforts become part of child survival efforts, maternal health will improve.
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PMID:Unsafe motherhood: the determinants of maternal mortality. 765 35

To facilitate the design of malaria prevention and control programs in tropical Africa, a qualitative investigation of treatment seeking behaviors and perceptions of the causes and symptoms of malaria was conducted in a rural area in South Western Uganda's Masaka District. Components of the investigation included focus group discussions involving 42 participants recruited from women's clubs and prenatal and child health clinics, semi-structured interviews with 395 female outpatients 13 years of age and above and adult women escorting young children to government subdispensaries for treatment of a new malaria episode, and household interviews with 64 mothers. In this rural community, there is no specific word for malaria; rather, the word "omusujja" is used to refer to malarial symptoms as well as any kind of fever. Respondents consistently identified omusujja as the most prevalent, serious disease in their community. They linked its causation to food and drink, environmental conditions, vectors such as mosquitoes, and other illnesses. There was widespread awareness that omusujja presents differently according to age group, e.g. fever, refusal to suck, crying, vomiting, and mouth sores in infants as compared to miscarriage, vomiting, weakness, chills, and joint pain in pregnant women. Treatment is initiated promptly, although it mainly consists of use of local herbs; if the herbs fail to reduce the fever, hospital care is sought. Preventive methods cited included boiling water, cleaning cooking utensils, avoiding raw mangoes and roasted maize, and keeping mosquitoes out of the home. Recommended is a health education campaign emphasizing the role of mosquitoes in malaria transmission and the need for prompt medical intervention.
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PMID:Recognition, treatment seeking behaviour and perception of cause of malaria among rural women in Uganda. 770 65

From 28 October 1991 to 30 December 1992, in Jima Hospital, a teaching hospital serving a predominantly rural population in southwestern Ethiopia, there were 841 deliveries and 573 abortions with 22 maternal deaths, a maternal mortality rate of 26 per thousand live births. Direct obstetric causes accounted for 19 of the 22 deaths. The non-obstetric causes were one case each of intestinal obstruction, cerebral malaria and pneumonia. The most frequent causes of death were illegal abortion in nine, ruptured uterus in six and post partum haemorrhage (PPH) in three. Half of the deaths occurred within 24 hours of admission. The causes of maternal death are analyzed and possible preventive measures are suggested.
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PMID:Analysis of maternal deaths in Jima Hospital southwestern Ethiopia. 803 78

The causes and clinical course of 136 cases of acute renal failure (ARF) consecutively treated in the Renal Unit of Tikur Anbessa Hospital, Addis Abeba, Ethiopia, between January 1989 and December 1992 are described. There were 106 women and 30 men with mean age of 26.9 +/- 7.2 and 40.7 +/- 14.9 years respectively. Septic abortion is still the leading cause of ARF (71 patients) followed by falciparum malaria (29 patients) and nephrotoxic agents (12 patients). One-hundred-seventeen patients (86%) required dialysis. The overall case fatality rate was 33.8%, with similar mortality rates in septic abortion (36.6%) and falciparum malaria infection (37.9%), but a much lower rate (16.7%) in acute renal failure secondary to nephrotoxic agents. Septicaemia and pneumonia were leading causes of death. Derangement of liver function was associated with higher mortality rates in patients with septic abortion and malaria, whereas leukocytosis was found to be a poor prognostic finding in the latter. Non-oliguric ARF was seen in 33.8% of cases and was found commonly in patients with malaria (75.9%) or in nephrotoxin-induced ARF (83.8%). Mean duration of oliguria was 18.9 +/- 11 days. Compared to the previous report from the same centre, this larger series identified important clinical settings other than septic abortion which predispose to ARF. As renal function tests are not performed routinely in many Ethiopian hospitals and as many patients have non-oliguric ARF, cases may be being missed. Measures to prevent septic abortion and malaria, and the judicious use of nephrotoxic agents, may decrease the incidence of ARF.
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PMID:Acute renal failure in Addis Abeba, Ethiopia: a prospective study of 136 patients. 803 81

A study of the effects of malaria infection on the progress and outcome of pregnancy was carried out during 1987-88 in the Medical College Hospital, Surat, Gujarat. Pregnant women were highly susceptible to the infection (SPR, 57.7) compared to the general population (SPR, 18.6). P. falciparum infection was predominant (62.4%). The infection rate was also found to be higher (SPR, 72.2%) in second trimester compared to first and third semesters. Primigravidae seemed to be at a greater risk as the mean parasitaemia level was higher (39%) and the outcome poor as compared to multigravidae (29%). Infection during pregnancy caused severe maternal complications like abortion (9.7%), premature labour (59.6%), and still-births (5.7%), which were higher in P. falciparum infection. Microcytic anaemia combined with dimorphic anaemia was predominant in the infected group (89.5%). Cord blood in 4 cases and on baby's blood were found positive for malaria parasite, showing transplacental passage of malaria parasites, which is rare. The infection was found to have a definite bearing on the low birth weight of babies. Chemoprophylaxis could obviate much of the complications.
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PMID:Effects of malaria infection on pregnancy. 803 9

According to the World Health Organization, between 1980 and 1985 the total fertility rate was 2.0 in the wealthy countries and 4.1 in the less developed countries. The highest rate was found in Kenya with 8.1. The risk of maternal mortality in connection with pregnancy and childbirth was 1/10,000 in Northern Europe, but 1/21 in Africa. Every year about 500,000 women die because of complications before, during, or after delivery. The maternal mortality rate (30/100,000 live births in Europe) is still 500-800/100,000 in the developing countries, although Tanzania has succeeded in cutting its rate from 450/100,000 to 170/100,000. The main causes of maternal mortality are: 1) unrecognized obstructed labor, 2) postpartum bleeding that could be managed by massaging the uterus, administration of oxytocin or by the manual removal of the placenta, 3) postpartum infections that could be treated by timely administration of antibiotics, 4) preeclampsia that could be detected and treated, and 5) abortion complications requiring effective treatment. Among indirect causes of death is anemia: 66% of pregnant women in developing countries are anemic, compared to 14% in industrialized countries. So far the cause of the reduction of partial immunity against malaria parasites in primiparas has not been explained. A significant percentage of deaths (11-47%) can be traced to unqualified and negligent personnel, especially in the slums and rural areas. Only 52% of deliveries are attended by well-trained health personnel, although in 10% of pregnancies complications arise. Young age is another factor: in 1989 in Tanzania the first pregnancy occurred on the average at age 17.6 years compared to 27 years in England. In the beginning of the 1990s there were an estimated 3 million HIV-infected women, therefore maternal mortality as a consequence of AIDS is going to increase. In high prevalence areas the population growth rate will decline from 3% to 2.4%. Traditional birth attendants could be trained and used effectively to reduce maternal mortality by 3-11% as part of a functioning referral system.
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PMID:[Obstetrics in the Third World]. 811 19


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