Evidence map›Paper›PMID 33503191›Full record

Observational studyClinics (Sao Paulo, Brazil)2021

Predictors and reference equations for augmentation index, an arterial stiffness marker, in healthy children and adolescents.

Luzia Maria Dos Santos, Isabel Cristina Gomes, José Felippe Pinho, Claudia Marotta Neves-Alves, Giselle Santos Magalhães, Maria José Campagnole-Santos, Maria da Glória Rodrigues-Machado

Abstract readObservational Study
In one paragraph

Observational study in Clinics (Sao Paulo, Brazil), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

13 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Comparison of Acute Effects of E-cigarettes With and Without Nicotine and Tobacco Cigarettes on Hemodynamic and Endothelial Parameters: A Systematic Review and Meta-analysis.High blood pressure & cardiovascular prevention : the official journal of the Italian Society of Hypertension · 2024
    Pooled it
  2. Impaired Intracranial Compliance: A New Hypertension-Mediated Brain Organ Damage?High blood pressure & cardiovascular prevention : the official journal of the Italian Society of Hypertension · 2026
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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

7 authors.

Luzia Maria Dos SantosPrograma de Pos-Graduacao em Ciencias da Saude, Faculdade Ciencias Medicas de Minas Gerais, Belo Horizonte, MG, BR.ORCID 0000-0001-9025-7659
Isabel Cristina GomesPrograma de Pos-Graduacao em Ciencias da Saude, Faculdade Ciencias Medicas de Minas Gerais, Belo Horizonte, MG, BR.ORCID 0000-0002-5549-3426
José Felippe PinhoPrograma de Pos-Graduacao em Ciencias da Saude, Faculdade Ciencias Medicas de Minas Gerais, Belo Horizonte, MG, BR.ORCID 0000-0002-9936-7392
Claudia Marotta Neves-AlvesPrograma de Pos-Graduacao em Ciencias da Saude, Faculdade Ciencias Medicas de Minas Gerais, Belo Horizonte, MG, BR.ORCID 0000-0002-3944-3402
Giselle Santos MagalhãesPrograma de Pos-Graduacao em Ciencias da Saude, Faculdade Ciencias Medicas de Minas Gerais, Belo Horizonte, MG, BR.ORCID 0000-0002-2589-0332
Maria José Campagnole-SantosDepartamento de Fisiologia e Biofisica, Instituto de Ciencias Biologicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BR.ORCID 0000-0001-9483-4206
Maria da Glória Rodrigues-MachadoPrograma de Pos-Graduacao em Ciencias da Saude, Faculdade Ciencias Medicas de Minas Gerais, Belo Horizonte, MG, BR.ORCID 0000-0002-9950-1707

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo investigate predictors and propose reference equations for the augmentation index normalized to 75 bpm heart rate (AIx@75) in healthy children and adolescents.

methodsThis was a cross-sectional, observational study involving 134 healthy children and adolescents aged 9 to 19 years old. Participants were categorized into child (n=53) and adolescent (n=81) groups, as well as into male (n=69) and female (n=65) groups. We evaluated AIx@75, vascular and hemodynamic parameters, anthropometric data, physical activity profile, and quality of life (Peds-QL4.0; physical, emotional, social and school domains).

resultsThe predictors of AIx@75 in the whole sample were age, peripheral diastolic blood pressure (pDBP), mean arterial pressure, pulse pressure amplification (PPA), systolic volume (SV), cardiac index (CI), and pulse wave velocity (PWV; R2=80.47%). In the male group, the predictors of AIx@75 were SV, CI, total vascular resistence (TVR), and PWV (R2=78.56%), while in the female group, they were pDBP, PPA, SV, and PWV (R2=82.45%). In the children, they were pDBP, PPA, SV, and PWV (R2=79.17%), while in the adolescents, they were body mass index, pDBP, PPA, SV, TVR, and PWV (R2=81.57%).

conclusionIn the present study, we used a representative sample from Belo Horizonte to establish normality values of AIx@75. We also identified, for the first time, independent predictors of AIx@75 in healthy children and adolescents categorized by sex and age. Determining AIx@75 reference equations may facilitate the early diagnosis of preclinical atherosclerosis and allow an objective measure of the vascular effects of therapeutic interventions aimed at modifying cardiovascular risk factors.

Indexed as

Vascular StiffnessAdolescentAdultBlood PressureChildCross-Sectional StudiesFemaleHumansMalePulse Wave AnalysisQuality of LifeRisk FactorsYoung Adult

Identifiers

PMID33503191
PMCPMC7798126

What OpenQuestion holds

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LicenceCC BY
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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.