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May 29, 2019PLoS ONEOpen Access

Left ventricular mass is underestimated in overweight children because of incorrect body size variable chosen for normalization

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Why the study?

It remained unclear which body size variable normalizes left ventricular mass without underestimating it in overweight children.

Does normalization for body surface area or computed lean body mass underestimate left ventricular mass in overweight children compared to normalization for height?

Population

464 healthy boys, 5-18 years old

Comparison

Overweight vs non-overweight children across different normalization variables

Design

Cross-sectional study

Key result

Normalization for body surface area underestimates left ventricular mass in overweight children compared to non-overweight children (mean z-score -0.64 vs 0.00), whereas height does not.

Authors

HKHubert KrysztofiakMMMarcel MłyńczakŁMŁukasz A. Małek

Discussion

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Overview

May warrant caution with BSA-based LVM norms in overweight youth; leaves open optimal indexing for pediatric studies.

Study Design

Type

Cross-Sectional (n=464)

Structured PICO

Does normalization for body surface area or computed lean body mass underestimate left ventricular mass in overweight children compared to normalization for height?

P
Population
464 healthy boys aged 5 to 18 years evaluated to determine the optimal body size variable for normalizing left ventricular mass in overweight children.
E
Exposure
Normalization of echocardiographic left ventricular mass using body surface area or computed lean body mass
C
Comparator
Normalization of echocardiographic left ventricular mass using height
O
Outcome
Left ventricular mass z-scores and expected left ventricular mass estimated for each normalizing variablesurrogate

Main Result

Absolute Event Rate: -0.64% vs 0%

Normalization of left ventricular mass for body surface area or computed lean body mass underestimates left ventricular mass in overweight children, suggesting height is a more appropriate normalizing variable.

Cite This Study

Krysztofiak et al. (2019) conducted a cross-sectional in Overweight (n=464). Overweight status vs. Non-overweight status was evaluated on Mean left ventricular mass z-score based on body surface area. Normalization for body surface area underestimates left ventricular mass in overweight children compared to non-overweight children (mean z-score -0.64 vs 0.00), whereas height does not.

synapsesocial.com/papers/6a39cd97c5135fa86afa1e61https://doi.org/10.1371/journal.pone.0217637
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