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Acute kidney injury in a shepherd with severe malaria: a case report

Authors Boushab BM, Fall-Malick FZ, Savadogo M, Basco LK

Received 4 July 2016

Accepted for publication 13 September 2016

Published 11 October 2016 Volume 2016:9 Pages 249—251

DOI https://doi.org/10.2147/IJNRD.S116377

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Amy Norman

Peer reviewer comments 5

Editor who approved publication: Professor Pravin Singhal


Boushab Mohamed Boushab,1 Fatim-Zahra Fall-Malick,2 Mamoudou Savadogo,3 Leonardo Kishi Basco,4

1Department of Internal Medicine, Aïoun Regional Hospital, Hodh El Gharbi, Mauritania; 2National Institute of Hepatology-Virology in Nouakchott, School of Medicine, Nouakchott, Mauritania; 3Department of Infectious Diseases, University Teaching Hospital Yalgado Ouédrago, Ouagadougou, Burkina Faso; 4Research Unit of Infectious and Tropical Diseases, Institut de Recherche pour le Développement (Research Institute for Development), Aix-Marseille University, Marseille, France

Abstract: Malaria is one of the main reasons for outpatient consultation and hospitalization in Mauritania. Although four Plasmodium species, ie, Plasmodium (P.) falciparum, P. vivax, P. malariae, and P. ovale, cause malaria in Mauritania, recent data on their frequency is ­lacking. Since infections with P. falciparum generally result in serious disease, their identification is important. We report a case of oliguric renal injury associated with malaria in a 65-year-old shepherd. Clinical manifestations included anemia, oliguria, and elevated creatinine and urea. The rapid diagnostic test for malaria and microscopic examination of blood smears were positive for P. falciparum. On the basis of this, the patient was diagnosed as having acute kidney injury as a complication of severe malaria. The patient was treated for malaria with intravenous quinine for 4 days, followed by 3 days of oral treatment. Volume expansion, antipyretic treatment, and diuretics were administered. He also had two rounds of dialysis after which he partially recovered renal function. This outcome is not always the rule. Prognosis depends much on early diagnosis and appropriate supportive treatment.

Keywords:
malaria, oliguric kidney injury, shepherd, quinine, dialysis

Introduction

Malaria is a disease caused by protozoan parasites of the genus Plasmodium (P), (P. falciparum, P. vivax, P. malariae, P. ovale, and P. knowlesi) and is transmitted in endemic areas by female Anopheles mosquitoes.1,2 The disease is still a major cause of morbidity and mortality in many tropical developing countries.2 In Mauritania, despite the lack of reliable health data, malaria is often considered as the third cause of medical consultation and hospitalization, after infectious diarrhea and acute respiratory diseases, in eight of 13 regions.3 Severe life-threatening complications, such as cerebral malaria, severe anemia, acidosis, jaundice, acute kidney injury, acute respiratory distress syndrome, pulmonary edema, and disseminated intravascular coagulation, occur mostly with P. falciparum infection.4 Few reports have appeared indicating an association of severe complications of malaria with P. vivax infection.5,6 We report a case of a patient presenting with severe malaria and acute kidney injury.

Case report

A 65-year-old shepherd residing in a malaria-endemic area in Mauritania (Kobeni, Hodh El Gharbi) with no remarkable history of renal disease presented with fever associated with chills, myalgia, vomiting, and loss of consciousness on September 2, 2015. The patient developed a flu-like syndrome (fever, headache, and arthralgia) and abdominal pain 3 days before hospitalization in Aïoun hospital (reference hospital of Hodh El Gharbi region). Clinical examination on admission showed severe impairment of consciousness with a Glasgow score of 8, jaundice, dyspnea, and pallor. He had no rashes, edema, or palpable lymph nodes. The patient had hypotension (60/40 mmHg), tachycardia, tachypnea (38 breaths/min), and hyperthermia (40.5°C). The rapid diagnostic test for malaria and microscopic examination of blood smears were positive for P. falciparum. Laboratory examinations showed the following results: hemoglobin, 7 g/dL; mean corpuscular volume, 87 fL; aspartate aminotransferase, 104 IU/L; alanine aminotransferase, 93 IU/L; total bilirubin, 49 μmol/L; direct bilirubin, 77 μmol/L; and random blood glucose, 1.02 g/L. Urinalysis and cerebrospinal fluid tests were negative.

On the second day of hospitalization, the patient developed shortness of breath with no cough and anuria (with only 50 mL urine collected over 24 hours); this was soon followed by hiccups. A chest X-ray was performed, which helped confirm a diagnosis of pulmonary edema. The renal workup revealed serum creatinine of 102 mg/dL, serum urea of 1.17 g/L (high), serum potassium of 5.1 mEq/L, and serum sodium of 142 mEq/L. On the basis of these results, the patient was diagnosed as having severe malaria with acute kidney injury, pulmonary edema, and anemia. The patient was admitted to the hemodialysis unit for emergency dialysis. Quinine (10 mg/kg body weight) was administered every 8 hours in 5% dextrose infusion for 4 days. Volume expansion, antipyretic treatment, and diuretics were administered. After two sessions of consecutive hemodialysis of 4 h/d, the patient became conscious and had urine output of 1900 mL/24 h. Serum creatinine, urea, and potassium were 29 mg/dL, 0.47 g/L, and 4 mEq/L, respectively. The patient was discharged from the hospital 4 days later in good health. The follow-on oral treatment was a full course of artesunate-sulfamethoxypyrazine-pyrimethamine (Co-arinate FDC®; Dafra Pharma, Turnhout, Belgium) for 3 days. The patient was closely followed up after 3 weeks and was found to have normal and stable renal function, and he was also asymptomatic. Adjuvant therapy was prescribed, and no control blood smear for malaria parasites was made.

Discussion

This observation illustrates a manifestation of severe malaria rarely reported in an autochthonous adult. Acute kidney injury is, however, well known in adults and, in particular, in nonimmune subjects with P. falciparum malaria infections.2,7 Furthermore, P. falciparum is recognized as an important cause of acute kidney injury in areas of intense transmission.4 The incidence of malarial acute kidney injury worldwide is 1–4% and may be as high as 60% among nonimmune adults from nonendemic regions visiting malaria-endemic regions of the world.8 The pathogenesis of acute kidney injury in malaria is still not clearly understood. Blockage of renal microcirculation due to sequestration of infected erythrocytes, immune-mediated glomerular injury and volume depletion are some of the proposed hypotheses.9 The diagnosis of acute kidney injury has been established on the basis of clinical evidence (anuria) and biochemical characteristics (azotemia, hyponatremia, and hypokalemia).2,7,10 The reported polyuria is a classic evolution of diuresis during treatment of acute kidney injury and is due to recovery from fluid retention, which may be likened to the removal of an obstacle.10 Hepatic involvement revealed by cytolysis has been reported by some authors.2,10 It is however generally mild and transient and resolves spontaneously and rapidly in a few days.10

Kidney injury in malaria involves several mechanisms. It may occur in case of circulatory insufficiency, but it may also be due to the precipitation of hemoglobin crystals in renal tubules during intravascular hemolysis. In case of high parasitemia, anoxic-ischemic lesions may be observed in connection with the phenomena of adhesion of P. falciparum trophozoite- and schizont-infected erythrocytes to the endothelium of renal capillaries.11 Malarial acute kidney injury can occur as an isolated complication or as a component of multiorgan involvement.2 Indeed, it should be suspected in the presence of anuria despite adequate rehydration, and the diagnosis is confirmed if serum creatinine is elevated,12 as was the case of our patient whose condition improved after hemodialysis. Although dialysis has significantly improved the management of acute kidney injury in severe malaria, prognosis remains poor.10 An appropriate treatment includes intravenous quinine (or if available, parenteral artesunate or artemether should be used in preference to quinine)13 and diuretics, such as furosemide.

Conclusion

Acute kidney injury secondary to severe malaria is uncommon. The prognosis depends on early diagnosis and treatment. Rapid initiation of hemodialysis proves useful in the restoration of renal function.

Consent

Written informed consent for publication of the clinical details was obtained from the patient. A copy of the written consent is available for review by the Editor-in-Chief of this journal.

Author contributions

Boushab Mohamed Boushab was involved in drafting the manuscript, made substantial contributions to study conception and design, helped in clinical data verification, and gave input for the “Discussion” section. Fatim-Zahra Fall-Malick, Mamoudou Savadogo, and Leonardo Kishi Basco contributed to manuscript correction. All authors contributed toward data analysis, drafting and critically revising the paper and agree to be accountable for all aspects of the work.

Acknowledgments

The authors would like to acknowledge the tireless efforts of all workers at the hemodialysis unit, for their good patient care together with the doctors and nurses of the Aïoun Regional Referral hospital, for their initial care of this patient and timely referral of the patient.

Disclosure

The authors report no conflicts of interest in this work.

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