Cited by 249Cardiovascular Function and Risk FactorsCardiovascular Effects of ExerciseCardiac Imaging and Diagnostics

Distribution and Categorization of Echocardiographic Measurements in Relation to Reference Limits: The Framingham Heart Study: Formulation of a Height- and Sex-Specific Classification and Its Prospective Validation

Vasan, Ramachandran S., Larson, Martin G., Levy, Daniel, Evans, Jane C., Benjamin, Emelia J.·1997·Circulation

Abstract

Background Despite widespread categorization of echocardiographic measurements, there are no standardized guidelines for partitioning values exceeding reference limits. Methods and Results We used regression analyses to develop sex- and height-specific reference limits for cardiac M-mode measurements (left ventricular [LV] mass, LV wall thickness, and LV and left atrial dimensions) in a healthy reference sample (n=1099) from the Framingham Heart Study. We then examined the distribution of measurements in a broad sample (n=4957) and classified the measurements according to increasing deviation from the height- and sex-specific reference limits and the 95th, 98th, and 99th percentile values for the broad sample (categories 0 through 4, respectively). To validate the categorization scheme, we used multivariable proportional-hazards regression to assess the relations of LV mass and LV wall thickness categories to risk of cardiovascular events and the relations of left atrial size to risk of atrial fibrillation. During a mean follow-up period of 7.7 years, 587 subjects developed new cardiovascular disease events, and 166 subjects developed new-onset atrial fibrillation. After adjustment for known risk factors, there was a 1.2- and 1.3-fold risk of cardiovascular disease events per category of LV wall thickness and LV mass, respectively, and a 1.6-fold risk of atrial fibrillation per category of left atrial size. Conclusions Using a large community-based study sample, we propose a classification scheme that provides a standardized and validated framework for partitioning echocardiographic measurements. If adopted, the categorization scheme should promote uniformity in describing measurements among echocardiographic laboratories and enhance the comprehensibility of measurements to clinicians.

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Crossref · 10.1161/01.cir.96.6.1863

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Authors
Vasan, R. S., Larson, M. G., Levy, D., Evans, J. C., & Benjamin, E. J.
Affiliations
Harvard University (US)
Venue
Circulation
Published
1997-09-16
Volume
96
Issue
6
Pages
1863-1873
ISSN
  • 0009-7322 (ISSN-L)
  • 1524-4539
OpenAlex
W1997065988
Cited by
248
References
50
Citations by year
2026: 4 · 2025: 7 · 2024: 5 · 2023: 16 · 2022: 9 · 2021: 4 · 2020: 9 · 2019: 10 · 2018: 5 · 2017: 5 · 2016: 10 · 2015: 8 · 2014: 10 · 2013: 8 · 2012: 7
FWCI
4.08
Type
journal article
Language
en
Open access
closed
Locations
  • Circulation (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Heart, Lung, and Blood Institute (N0I-HC-38038)
  • National Institute of Neurological Disorders and Stroke (2-ROI-NS-17950-11)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Function and Risk Factors
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Effects of Exercise
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Cardiac Imaging and Diagnostics
Keywords
reference limits, left ventricular mass, left ventricular wall thickness, left atrial size, M-mode echocardiography, cardiovascular risk, atrial fibrillation, cardiovascular events, percentiles
MeSH terms
Adolescent, Adult, Aged, Aged, 80 and over, Body Height, Cardiovascular Diseases, Echocardiography, Female, Follow-Up Studies, Heart Ventricles, Humans, Male, Middle Aged, Prospective Studies, Reference Values, Reproducibility of Results, Multivariate Analysis, Treatment Outcome, Sex Distribution

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