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01.12.2012 | Research | Ausgabe 1/2012 Open Access

Malaria Journal 1/2012

Haemoglobinuria among children with severe malaria attending tertiary care in Ibadan, Nigeria

Zeitschrift:
Malaria Journal > Ausgabe 1/2012
Autoren:
Wasiu A Ajetunmobi, Adebola E Orimadegun, Biobele J Brown, Nathaniel K Afolabi, Folorunso A Olabiyi, John I Anetor, Samuel Omokhodion, Kikelomo Osinusi, Felix O Akinbami, Wuraola A Shokunbi, Olugbemiro Sodeinde, Delmiro Fernandez-Reyes
Wichtige Hinweise

Competing interests

The authors declare that they have no competing interests.

Authors’ contributions

DF-R, OS and WAA conceived, designed, deployed and directed the case-controlled study at the Childhood Malaria Research Group, Ibadan, Nigeria. WAA, BJB, AEO, NKA, SO, KO, FOA, WAS, OS and DF-R carried out patient recruitment and follow-up, sample collection, storage and transport. WAA, FAO, JIA carried out haemoglobinuria tests. WAA, BJB, AEO, OS and DF-R analyzed data. DF-R, OS and WAA produced figures and tables and wrote the manuscript. All authors read and approved the final manuscript.

Abstract

Background

Haemoglobinuria is one of the manifestations of severe malaria and results from severe intravascular haemolysis. Glucose-6-phosphate dehydrogenase (G6PD) deficiency has been implicated in its aetiology. Haemoglobinuria may be associated with severe anaemia and, less frequently, acute renal failure.

Methods

A prospective case-control study was carried out to determine the incidence of haemoglobinuria as confirmed by dipstick urinalysis, microscopy and spectrophotometric measurement, among children with severe malaria. A total of 251 children presenting at the Children’s Emergency Ward with severe malaria were recruited over a period of 21 months. The G6PD status and the outcomes of severe malaria in children with and without haemoglobinuria was studied with respect to renal failure, the recurrence of haemoglobinuria and blood pressure changes over a three-month follow-up period.

Results

It was found that the incidence of haemoglobinuria among children with severe malaria is 19.1%. Children <5 years constituted 76.8% of all the study patients. Patients with haemoglobinuria had median age of 52.5 months, which was significantly higher than 35 months in patients without haemoglobinuria (p=0.001). Although, haemaglobinuria was commoner among boys (54.2%) than girls (45.8%), the difference was not statistically significant. There were no significant differences between children with and without haemoglobinuria regarding their nutritional status or parasite densities. Among the clinical features of the study patients, only jaundice was significantly associated with haemoglobinuria (p=0.0001). Renal failure occurred in three out of 48 children with haemoglobinuria and in none of the 203 without. There was not recurrence of haemoglobinuria in the follow-up period. At discharge, blood pressure was elevated in six children (one previously haemoglobinuric), but all returned to normal within the follow-up period.

Conclusions

Haemoglobinuria was a prominent feature of severe malaria and it was significantly associated with jaundice at presentation. Haemoglobinuria was commoner in older children than younger children but not related to sex. G6PD deficiency was not an independent predictor of the occurrence or outcome of haemoglobinuria. Blood pressure was not affected by haemoglobinuria on admission nor during follow-up.
Literatur
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