Volume 13, Issue 3 pp. 369-376
ORIGINAL ARTICLE

Intrauterine growth restriction is not associated with decreased exercise capacity in adolescents with congenital heart disease

Andrew D. Spearman MD

Corresponding Author

Andrew D. Spearman MD

Division of Cardiology, Children's Hospital of Wisconsin, Medical College of Wisconsin, Milwaukee, Wisconsin, USA

Correspondence Andrew D. Spearman, Children's Hospital of Wisconsin, Medical College of Wisconsin, 9000 Wisconsin Avenue, Milwaukee, WI 53226. Email: [email protected]Search for more papers by this author
Rohit S. Loomba MD

Rohit S. Loomba MD

Division of Cardiology, Cincinnati Children's Hospital Medical Center, Ohio, USA

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Michael Danduran MS, PhDc

Michael Danduran MS, PhDc

Division of Cardiology, Children's Hospital of Wisconsin, Medical College of Wisconsin, Milwaukee, Wisconsin, USA

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Joshua Kovach MD

Joshua Kovach MD

Division of Cardiology, Children's Hospital of Wisconsin, Medical College of Wisconsin, Milwaukee, Wisconsin, USA

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First published: 28 January 2018

Abstract

Objective

Multiple studies demonstrate the association of intrauterine growth restriction (IUGR) with impaired aerobic fitness in adolescents and adults. To our knowledge, there are no studies including individuals with the history of both IUGR and congenital heart disease (CHD). Thus, we sought to evaluate the impact of IUGR on exercise capacity in adolescents with CHD.

Study Design

We conducted a retrospective chart review of patients <18 years of age who underwent cardiopulmonary exercise testing (CPET) between August 1, 2003 and July 1, 2016. Individuals with birth weight <10th percentile for gestational age were defined as IUGR. Patients with IUGR were matched with non-IUGR patients by cardiac diagnosis and age at CPET. We excluded patients >18 years of age at time of CPET, those without a documented birth weight, gestational age, or Race.

Results

A total of 282 patients were included with CHD present in 86 IUGR cases and 86 controls. There was no difference in percent predicted exercise duration (IUGR: 65.2% ± 31.2, non-IUGR: 67.4% ± 27.2; P = .67). Resting heart rate, chronotropic index, percent-predicted peak oxygen consumption, and pulmonary function were similar between groups. Regression analyses confirmed that IUGR was not independently associated with difference in percent-predicted exercise duration.

Conclusions

Intrauterine growth restriction is not associated with the differences in the measurements of exercise capacity in adolescents with CHD. These findings contrast earlier studies, showing decreased fitness in individuals with low birth weight but without CHD. To our knowledge, this is the first study to examine the impact of IUGR on exercise capacity in patients with CHD.

CONFLICT OF INTEREST

The authors declare that they have no conflicts of interest with the contents of this article.

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