Evidence map›Paper›PMID 33665387›Full record

ArticleParasite epidemiology and control2021

Age-related anomalies of electrocardiograms in patients from areas with differential Seroprevalence of Chagas disease in Southern Bolivia.

Jhean-Carla Echalar, David Veliz, Omar N Urquizo, Hermann M Niemeyer, Carlos F Pinto

Open access · goldAbstract read
In one paragraph

Article in Parasite epidemiology and control, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed, 1 pooled it
0.6field-weighted citation impact, top 33% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed, 1 synthesis or guideline pooled it, 4 citations in OpenAlex.

  1. Pooled it
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 2 countries.

Jhean-Carla EchalarUniversidad Mayor Real Y Pontificia de San Francisco Xavier de Chuquisaca, Junin esq. Estudiantes # 692, Sucre, Bolivia.
David VelizUniversidad de Chile, Facultad de Ciencias, Departamento de Ciencias Ecológicas, Santiago, Chile.
Omar N UrquizoUniversidad Mayor Real Y Pontificia de San Francisco Xavier de Chuquisaca, Junin esq. Estudiantes # 692, Sucre, Bolivia.
Hermann M NiemeyerUniversidad de Chile, Facultad de Ciencias, Departamento de Ciencias Ecológicas, Santiago, Chile.
Carlos F PintoUniversidad Mayor Real Y Pontificia de San Francisco Xavier de Chuquisaca, Junin esq. Estudiantes # 692, Sucre, Bolivia.
University of Saint Francis Xavier · BOUniversity of Chile · CL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionChagas disease currently affects some 6 million people around the world. At the chronic stage, cardiomyopathy occurs in about 20-30% of infested people. Most prevalence studies have focused on young to adult people due to the drastic consequences of acquiring the pathogen and the possibility to cure the disease at this age; the prevalence of this disease, the effect of patients' sex and the consequences to senescent people have been largely neglected. This study looks to characterize the seroprevalence of Chagas disease and its relation with occurrence of electrocardiographic anomalies associated with sex and age, and to compare rural and urban populations in Bolivia. METHODOLOGY: Seroprevalence of Chagas disease was determined in blood samples and electrocardiograms were performed on seropositive individuals.

resultsThe rural population showed higher seroprevalence than the urban population (92% and 40%, respectively). The proportion of Chagasic cardiac anomalies in seropositive persons was highest in patients of the 50-59 age group (36%) as compared with the 40-49 (8%) and the ≥60 (17%) age groups.

conclusionsHigher seroprevalence in rural population was attributable to a higher probability to encounter the vector in rural areas. Increased exposure to infection and to development of the disease symptoms together with increased lethality of the disease as patients age explains the age-related Chagasic electrocardiographic anomalies. Since rural and urban populations showed different reactions under Chagas disease and the rural population was mainly of guaraní stock, the genetic and environmental determinants of the results should be further explored.

Indexed as

BoliviaChagas cardiopathiesChagas seroprevalenceChuquisacaUrban vs. rural populations

Identifiers

PMID33665387
PMCPMC7905461
OpenAlexW3128340104

What OpenQuestion holds

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LicenceCC BY-NC-ND
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.