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

The records of 20 children with imported malaria admitted to Kings County Hospital between October 1987 and May 1995 were reviewed. All had a history of recent travel or immigration from a malaria endemic area (West-Africa [16], Central-America [three], and the Caribbean [one]). None of the 10 children with a travel history received appropriate malaria chemoprophylaxis. The most common symptoms and signs were daily fever, chills, and hepatomegaly. Diagnosis was delayed in seven children who were initially felt to have pharyngitis or viral syndrome. Common laboratory findings were anemia and thrombocytopenia. P. falciparum was identified in 70% of the patients. Other species were P. malariae and P. vivax. Complications occurred in six children, hyponatremia in five, seizures in three, and cerebral malaria in one patient. The high incidence of chloroquine-resistant malaria makes chemoprophylaxis difficult in children. The clinical presentation of malaria is nonspecific, and diagnostic delays occur, so a high index of suspicion is needed in children with a travel history.
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PMID:Pediatric imported malaria in New York: delayed diagnosis. 1037 90

A 53-year-old patient, after return from a short visit to the Ivory Coast, was admitted for suspicion of hepatic encephalopathy. An acute pernicious malaria was diagnosed with associating altered consciousness, hyperthermia, icterus, hepatomegaly, and oliguria. Blood tests showed acute renal failure, pancytopenia, disseminated intravascular coagulation, metabolic acidosis and parasitaemia at 12%. An intravenous therapy with quinine and doxycycline was started without delay. One day later, an exchange blood transfusion including a erythrapheresis and plasmapheresis was undertaken. The patient's general condition improved, and he was discharged from the ICU 22 days later. The indications for exchange blood transfusion in acute pernicious malaria are discussed.
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PMID:[Acute pernicious malaria treated with exchange transfusion]. 1042 88

Sixty cases of P. falciparum and 165 cases of P. vivax were studied clinically along with species identification of parasite after examination of the blood slide by experts at Calcutta. It was observed that malaria had been changing its clinical profile. The classic paroxysm is evident only in 40% cases of P. falciparum and 47.27% of P. vivax malaria, but the difference between the two groups is not statistically significant. On the other hand continuous or remittent type of fever has been observed in 40% and 27.27% cases of P. falciparum and P. vivax respectively, while absence of classic paroxysms of fever, in association with splenomegaly when present, poses a diagnostic difficulty with enteric fever. Association of jaundice in 40% and 9.09% cases with P. falciparum and P. vivax respectively along with hepatomegaly in 80% and 63.63% in them in conjunction with nausea and/or vomiting leads to clinical mimicry with infective hepatitis. Splenomegaly which has been described as cardinal feature of malaria was observed in 40% cases with P. falciparum and only in 18.18% cases of P. vivax malaria and this is a clear deviation from earlier description and this difference between the two groups is highly significant at 99% level of confidence. Co-existent enteric fever was observed in 3.33% of falciparum and 2.6% of vivax malaria, though this difference is not statistically significant. Acute respiratory distress was observed in 6.6% of P. falciparum malaria only. Oliguria with impaired renal function was noted in 5% cases of P. falciparum malaria. The present study has also noted convulsion or coma in 8.33%, purpura with disseminated intravascular coagulation in 3.33% and black water fever in 3.33% cases in falciparum malaria which were not observed in cases with vivax malaria and these differences are statistically significant. However, stupor with bilateral extensor planter response was observed in two cases (1.3%) of vivax malaria.
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PMID:Changing scenario of malaria: a study at Calcutta. 1044 29

The pattern of acute illness was determined in 102 adolescents and adults with sickle cell anaemia who presented to the emergency unit of a Lagos hospital. The patients had a mean age of 20.5 years (SD 13.1) and a male-female ratio of 1.5. The symptoms included fever (72%), fatigue and weakness (59%), anorexia (59%) and pain (57.5%) while major clinical signs were pallor (100%), jaundice (71%) and hepatomegaly (68%). Sixty-eight per cent of patients had sickle cell crises, including one with hemiplegic stroke, 10% with combined anaemia and pain crises, 33% with anaemia crises only and 23.5% with pain crises only. Sixty-three per cent had infection which was malaria in 24.5%, bacterial in 17% and viral in 6%. Of 16 patients with pyrexia of unknown origin, seven responded to treatment with chloroquine and eight to antibiotics. Infection was detected in 50% of the patients with sickle cell crises. The association between anaemia crises and malaria was significant (P < 0.05). Of the eight deaths, seven (88%) had anaemia crises. In contrast to studies conducted two decades ago in the same hospital, the prevalence of anaemia crises now exceeds that of pain crises and malaria now exceeds that of bacterial infection. Severe symptomatic anaemia (anaemia crisis) was more frequently associated with infection (mostly malaria) than was bone pain crisis. The Girdle pain crisis more frequently resulted in a fatal outcome than the uncomplicated bone pain crisis.
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PMID:Acute sickle cell syndromes in Nigerian adults. 1093 Nov 63

The clinical characteristics and the kinetics of the disposition of the hepatomegaly associated with acute, uncomplicated Plasmodium falciparum malaria were investigated in 162 children in an endemic area of Nigeria. Hepatomegaly was significantly more common in the younger than in the older children. Complete resolution occurred in 48% following antimalarial chemotherapy. In the children in whom hepatomegaly did not resolve, a reduction in liver size of < 17% by the time parasitaemia was cleared (usually on day 3) was associated with non-resolution of hepatomegaly by days 7 or 14 of follow-up. An increase in liver size to at least 125% of the baseline value by day 4 or 5 was associated with a lack of therapeutic response, providing the child involved was aged < 5 years. In the children who had complete clearance of parasitaemia and resolution of hepatomegaly, there was no significant relationship between the parasitaemia-derived conventional indices of therapeutic response [i.e. time to clearance of 50% (PC50) or 90% (PC90) of the parasitaemia, and the parasite-clearance time (PCT)] and the corresponding parameters derived from measurement of liver size [i.e. time for resolution of 50% (HR50) or 90% (HR90) of the hepatomegaly and the hepatomegaly-resolution time (HRT)] in the same patients. However, as the HR50:PC50, HR90:PC90 and HRT:PCT ratios were similar (range = 1.6-2.1), the liver parameters may have therapeutic application. In the children with drug-sensitive P. falciparum infections and in whom hepatomegaly completely resolved, the area produced by plotting liver size against time (i.e. the area under the curve of hepatomegaly v. time, or AUChp) increased in proportion to the liver size below the costal margin (P = 0.02, from analysis of variance), but there was no significant difference in the half-lives of hepatomegaly (t1/2hp) or in the ratios of liver size to AUChp, indicating that the kinetics of the resolution of hepatomegaly were linear in the range examined. Comparison of the kinetic indices of hepatomegaly and parasitaemia showed that, although the half-lives of parasitaemia and hepatomegaly and the corresponding clearance values were similar, there was no correlation between these parameters among those in whom hepatomegaly completely resolved and parasitaemia completely cleared. These results indicate that routine clinical measurement of the liver size in children with hepatomegaly during acute, uncomplicated, P. falciparum malaria may have some use in evaluating and monitoring the therapeutic responses of infections. The resolution of hepatomegaly, a reflection of pathological changes, lags behind clearance of parasitaemia in children with P. falciparum malaria, and supports the use of the liver 'rate' as a malariometric index for assessing the intensity of transmission in endemic areas.
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PMID:Clinical characteristics and disposition kinetics of the hepatomegaly associated with acute, uncomplicated, Plasmodium falciparum malaria in children. 1123 56

A descriptive study on the clinical presentation of childhood malaria was conducted in Savannakhet Province, Lao People's Democratic Republic. It is aimed to describe the clinical features and to determine the association between the severity of malaria and the initiation or delay of treatment. A total number of 92 children 1-14 years of age with confirmed malaria diseases were enrolled in this study. Fifty-six cases (60.9%) had illness for less than 3 days before hospitalized and 36 cases (39.1%) for more than 3 days. Twenty-nine cases (31.5%) had self antimalarial medication before admission (9 cases of chloroquine, 16 cases of quinine and 4 cases of artesunate). Ten cases (10.9%) had abnormal consciousness of which 7 cases (7.6%) had confusion but responded to verbal command and 3 cases (3.3%) were in coma not respond to painful stimuli but had reflex. Two cases 2.2%) had convsulsions, 11 cases (12.0%) had dehydration, 47 cases (51.1%) had vomiting, 18 cases (19.6%) had hepatomegaly and 19 cases (20.7%) had splenomegaly. There was a statistically significant association between consciousness levels and the duration of illness before admission < or = 3 days and > 3 days (p = 0.01) while there is no significant difference between parasitemia density and the duration of illness before admission (p > 0.05).
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PMID:Clinical presentation of childhood malaria in Savannakhet province, Lao PDR. 1141 67

We reviewed 232 consecutive patients admitted to a tertiary-care hospital under the care of an infectious diseases unit for management of febrile illness acquired overseas. A total of 53% presented to hospital within 1 week of return and 96% within 6 months. Malaria was the most common diagnosis (27% of patients), followed by respiratory tract infection (24%), gastroenteritis (14%), dengue fever (8%), and bacterial pneumonia (6%). Pretravel vaccination may have prevented a number of admissions, including influenza (n=11), typhoid fever (n=8) and hepatitis A (n=6). Compared to those who had not traveled to Africa, those who had were 6 times more likely to present with falciparum than nonfalciparum malaria. An itinerary that included Asia was associated with a 13-fold increased risk of dengue, but a lower risk of malaria. Palpable splenomegaly was associated with an 8-fold risk of malaria and hepatomegaly with a 4-fold risk of malaria. As a cause of fever, bacterial pneumonia was > or =5 times more likely in those who were aged >40 years.
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PMID:Fever in returned travelers: review of hospital admissions for a 3-year period. 1148 83

A malaria survey was conducted to examine the presence of common clinical features of malaria in individuals living in an endemic area of malaria. The overall infection rate was 11.0% with 7.5% and 3.5% infected with Plasmodium vivax and Plasmodium falciparum respectively. The mean parasitaemia level of both species was 2905.9 parasites/microliter blood, with the mean parasitaemia level of P. vivax and P. falciparum at 682.7 parasites/microliter blood and 6981.7 parasites/microliter blood respectively. The infection rates were higher in the younger age group. Hepatomegaly, hepatosplenomegaly and clinical anaemia were significantly associated with malaria. None of the patients were febrile. In conclusion, in low endemic areas, the presence of clinical anaemia, hepatomegaly and hepatosplenomegaly in afebrile individuals could be considered as useful criteria for the presence of asymptomatic parasitaemia. It is important to carry out laboratory diagnostic investigations, to ensure all the asymptomatic parasitaemia which act as reservoirs are detected and treated.
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PMID:Clinical features of malaria in Orang Asli population in Pos Piah, Malaysia. 1173 70

The clinical characteristics and the responses to oral 4-aminoquinoline therapy of 150 malarious children presenting consecutively were investigated in an endemic area. At presentation, the 75 children who subsequently developed pruritus were significantly older and had significantly higher body temperatures than the 75 children who did not develop pruritus. There were no other significant differences in clinical presentation between the two groups. In children with pruritus, there was no correlation between age, weight, presenting body temperature, duration of illness or presenting peripheral parasite density and duration of pruritus. Responses to oral antimalarial drugs were similar in both groups. There was no correlation between indices of therapeutic response and the duration of pruritus. Analysis of the disposition kinetics of parasitaemia and of the hepatomegaly associated with malaria, using a non-compartmental model similar to that used in characterizing drug disposition, showed that the two groups had similar half-lives of parasitaemia (t(1/2 pd)), volumes of blood completely cleared of parasites per unit time (CL(Bpd)) and ratios of parasite-clearance time to t(1/2 pd), and similar values for the corresponding parameters derived from hepatomegaly resolution. There was no apparent relationship between the indices of parasite- or hepatomegaly-disposition kinetics and the duration of pruritus.
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PMID:Comparative clinical characteristics and responses to oral 4-aminoquinoline therapy of malarious children who did and did not develop 4-aminoquinoline-induced pruritus. 1178 17

We conducted a case record study comparing liver tests abnormalities in 20 malaria-related acute renal failure cases without cerebral malaria, 52 cerebral malaria cases without other organ impairment, 189 cases of nonsevere malaria associated with a high parasite burden, and 131 cases of mild Plasmodiumfalciparum malaria. Jaundice and hepatomegaly were significantly associated with renal failure (adjusted odds ratio [AOR], 3.3, 95% confidence interval [CI], 1.3-8.6, P = 0.01; and AOR, 1.7 95% CI, 1.13-2.4, P = 0.01) but not with cerebral malaria (AOR, 1, 95% CI, 0.5-2, P = 0.8; and AOR, 1.08, 95% CI, 0.8-1.8, P = 0.5). Patients with acute renal failure were significantly older and had increased liver abnormalities compared with other groups. Although an increase in the proportion of mature schizonts over ring forms was significantly associated with cerebral malaria, it did not seem to have affected acute renal failure. These results suggested that cytoadherence was not the main determinant for renal failure and that jaundice itself may have potentiated the effects of hypovolemia.
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PMID:Association of hepatomegaly and jaundice with acute renal failure but not with cerebral malaria in severe falciparum malaria in Thailand. 1179 81


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