ArticleArquivos brasileiros de cardiologia2026
Implantation of Pacemakers in Patients with Chagas disease: A Case-Control Study of Associated Contextual Factors and Prognosis.
Article in Arquivos brasileiros de cardiologia, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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.
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.
Who cites it
1 citing paper in PubMed.
- Permanent Artificial Cardiac Pacemaker in the Treatment of Bradyarrhythmias Caused by Chagas Disease.Arquivos brasileiros de cardiologia · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
11 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundChronic Chagas cardiomyopathy (CCC) is the most severe manifestation of Chagas disease and may present with bradyarrhythmias requiring pacemaker (PM) implantation.
objective1. To identify contextual factors associated with PM implantation among individuals with CCC. 2. To assess the prognosis (death) in these groups over a 4-year follow-up period.
method1. Nested case-control study within the SaMi-Trop cohort. We matched cases (patients with CCC who had a PM implanted between waves 1 and 2 of the study) with controls at a 1:3 ratio, considering equivalence in baseline cardiac severity. Independent variables related to the municipal context were considered. Binary logistic regression was conducted. 2. Survival analysis to evaluate the prognosis of these groups, adjusted for clinical variables (Cox regression), considering death as the outcome. Conclusions were based on a significance level of 5%.
resultsThe study included 46 cases and 138 controls. The odds of PM implantation were higher among individuals residing in municipalities with: larger population (odds ratio [OR]: 3.6; 95% confidence interval [CI]: 1.3 to 9.6), higher coverage of the Family Health Strategy (OR: 5.3; 95% CI: 1.8 to 15.8), and with a lower number of electrocardiographs per thousand inhabitants (OR: 2.6; 95% CI: 1.0 to 6.6). Considering 4 years of follow-up, death was observed in 32.6% of cases and 21.2% of controls. Only ejection fraction affected survival (relative risk: 7.2; 95% CI: 3.6 to 14.2).
conclusionContextual factors interfered with PM implantation. However, PM implantation did not influence death over 4 years of follow-up, which was associated only with ejection fraction.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.