Risk factors for adverse prognosis and death in American visceral leishmaniasis: a meta-analysis.

<h4>Background</h4>In the current context of high fatality rates associated with American visceral leishmaniasis (VL), the appropriate use of prognostic factors to identify patients at higher risk of unfavorable outcomes represents a potential tool for clinical practice. This systematic...

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Autores principales: Vinícius Silva Belo, Claudio José Struchiner, David Soeiro Barbosa, Bruno Warlley Leandro Nascimento, Marco Aurélio Pereira Horta, Eduardo Sérgio da Silva, Guilherme Loureiro Werneck
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Publicado: Public Library of Science (PLoS) 2014
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spelling oai:doaj.org-article:b74654567d104142af8cca02ddaebd272021-11-25T06:32:20ZRisk factors for adverse prognosis and death in American visceral leishmaniasis: a meta-analysis.1935-27271935-273510.1371/journal.pntd.0002982https://doaj.org/article/b74654567d104142af8cca02ddaebd272014-07-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/25058582/?tool=EBIhttps://doaj.org/toc/1935-2727https://doaj.org/toc/1935-2735<h4>Background</h4>In the current context of high fatality rates associated with American visceral leishmaniasis (VL), the appropriate use of prognostic factors to identify patients at higher risk of unfavorable outcomes represents a potential tool for clinical practice. This systematic review brings together information reported in studies conducted in Latin America, on the potential predictors of adverse prognosis (continued evolution of the initial clinical conditions of the patient despite the implementation of treatment, independent of the occurrence of death) and death from VL. The limitations of the existing knowledge, the advances achieved and the approaches to be used in future research are presented.<h4>Methods/principal findings</h4>The full texts of 14 studies conforming to the inclusion criteria were analyzed and their methodological quality examined by means of a tool developed in the light of current research tools. Information regarding prognostic variables was synthesized using meta-analysis. Variables were grouped according to the strength of evidence considering summary measures, patterns and heterogeneity of effect-sizes, and the results of multivariate analyses. The strongest predictors identified in this review were jaundice, thrombocytopenia, hemorrhage, HIV coinfection, diarrhea, age <5 and age >40-50 years, severe neutropenia, dyspnoea and bacterial infections. Edema and low hemoglobin concentration were also associated with unfavorable outcomes. The main limitation identified was the absence of validation procedures for the few prognostic models developed so far.<h4>Conclusions/significance</h4>Integration of the results from different investigations conducted over the last 10 years enabled the identification of consistent prognostic variables that could be useful in recognizing and handling VL patients at higher risk of unfavorable outcomes. The development of externally validated prognostic models must be prioritized in future investigations.Vinícius Silva BeloClaudio José StruchinerDavid Soeiro BarbosaBruno Warlley Leandro NascimentoMarco Aurélio Pereira HortaEduardo Sérgio da SilvaGuilherme Loureiro WerneckPublic Library of Science (PLoS)articleArctic medicine. Tropical medicineRC955-962Public aspects of medicineRA1-1270ENPLoS Neglected Tropical Diseases, Vol 8, Iss 7, p e2982 (2014)
institution DOAJ
collection DOAJ
language EN
topic Arctic medicine. Tropical medicine
RC955-962
Public aspects of medicine
RA1-1270
spellingShingle Arctic medicine. Tropical medicine
RC955-962
Public aspects of medicine
RA1-1270
Vinícius Silva Belo
Claudio José Struchiner
David Soeiro Barbosa
Bruno Warlley Leandro Nascimento
Marco Aurélio Pereira Horta
Eduardo Sérgio da Silva
Guilherme Loureiro Werneck
Risk factors for adverse prognosis and death in American visceral leishmaniasis: a meta-analysis.
description <h4>Background</h4>In the current context of high fatality rates associated with American visceral leishmaniasis (VL), the appropriate use of prognostic factors to identify patients at higher risk of unfavorable outcomes represents a potential tool for clinical practice. This systematic review brings together information reported in studies conducted in Latin America, on the potential predictors of adverse prognosis (continued evolution of the initial clinical conditions of the patient despite the implementation of treatment, independent of the occurrence of death) and death from VL. The limitations of the existing knowledge, the advances achieved and the approaches to be used in future research are presented.<h4>Methods/principal findings</h4>The full texts of 14 studies conforming to the inclusion criteria were analyzed and their methodological quality examined by means of a tool developed in the light of current research tools. Information regarding prognostic variables was synthesized using meta-analysis. Variables were grouped according to the strength of evidence considering summary measures, patterns and heterogeneity of effect-sizes, and the results of multivariate analyses. The strongest predictors identified in this review were jaundice, thrombocytopenia, hemorrhage, HIV coinfection, diarrhea, age <5 and age >40-50 years, severe neutropenia, dyspnoea and bacterial infections. Edema and low hemoglobin concentration were also associated with unfavorable outcomes. The main limitation identified was the absence of validation procedures for the few prognostic models developed so far.<h4>Conclusions/significance</h4>Integration of the results from different investigations conducted over the last 10 years enabled the identification of consistent prognostic variables that could be useful in recognizing and handling VL patients at higher risk of unfavorable outcomes. The development of externally validated prognostic models must be prioritized in future investigations.
format article
author Vinícius Silva Belo
Claudio José Struchiner
David Soeiro Barbosa
Bruno Warlley Leandro Nascimento
Marco Aurélio Pereira Horta
Eduardo Sérgio da Silva
Guilherme Loureiro Werneck
author_facet Vinícius Silva Belo
Claudio José Struchiner
David Soeiro Barbosa
Bruno Warlley Leandro Nascimento
Marco Aurélio Pereira Horta
Eduardo Sérgio da Silva
Guilherme Loureiro Werneck
author_sort Vinícius Silva Belo
title Risk factors for adverse prognosis and death in American visceral leishmaniasis: a meta-analysis.
title_short Risk factors for adverse prognosis and death in American visceral leishmaniasis: a meta-analysis.
title_full Risk factors for adverse prognosis and death in American visceral leishmaniasis: a meta-analysis.
title_fullStr Risk factors for adverse prognosis and death in American visceral leishmaniasis: a meta-analysis.
title_full_unstemmed Risk factors for adverse prognosis and death in American visceral leishmaniasis: a meta-analysis.
title_sort risk factors for adverse prognosis and death in american visceral leishmaniasis: a meta-analysis.
publisher Public Library of Science (PLoS)
publishDate 2014
url https://doaj.org/article/b74654567d104142af8cca02ddaebd27
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