Volume 12, Issue 4 pp. 458-466
ORIGINAL ARTICLE

Impaired atrioventricular transport in patients with transposition of the great arteries palliated by atrial switch and preserved systolic right ventricular function: A magnetic resonance imaging study

Magalie Ladouceur MD

Corresponding Author

Magalie Ladouceur MD

INSERM U970, PARCC, Paris Descartes University, Paris, France

Department of Pediatric Cardiology, Complex Congenital Heart Disease Reference Center, M3C, Hôpital Necker Enfants malades, Assistance Publique—Hôpitaux de Paris, Paris Descartes University, Paris, France

Georges Pompidou European Hospital, AP-HP, Assistance Publique—Hôpitaux de Paris, Paris Descartes University, Paris, France

Correspondence Magalie Ladouceur, INSERM U970, PARCC, Paris Descartes University, 20 rue Leblanc, Paris 75015, France. Email: [email protected]Search for more papers by this author
Nadjia Kachenoura PhD

Nadjia Kachenoura PhD

Sorbonne Universités, UPMC Univ Paris 06, UMR 7371, UMR_S 1146, LIB, INSERM, UMR_S 1146, CNRS, UMR 7371, Paris, 75013 France

Search for more papers by this author
Gilles Soulat MD

Gilles Soulat MD

INSERM U970, PARCC, Paris Descartes University, Paris, France

Georges Pompidou European Hospital, AP-HP, Assistance Publique—Hôpitaux de Paris, Paris Descartes University, Paris, France

Search for more papers by this author
Emilie Bollache PhD

Emilie Bollache PhD

Sorbonne Universités, UPMC Univ Paris 06, UMR 7371, UMR_S 1146, LIB, INSERM, UMR_S 1146, CNRS, UMR 7371, Paris, 75013 France

Search for more papers by this author
Alban Redheuil MD, PhD

Alban Redheuil MD, PhD

Sorbonne Universités, UPMC Univ Paris 06, UMR 7371, UMR_S 1146, LIB, INSERM, UMR_S 1146, CNRS, UMR 7371, Paris, 75013 France

Search for more papers by this author
Michel Azizi MD, PhD

Michel Azizi MD, PhD

Georges Pompidou European Hospital, AP-HP, Assistance Publique—Hôpitaux de Paris, Paris Descartes University, Paris, France

Search for more papers by this author
Christophe Delclaux MD, PhD

Christophe Delclaux MD, PhD

Georges Pompidou European Hospital, AP-HP, Assistance Publique—Hôpitaux de Paris, Paris Descartes University, Paris, France

Search for more papers by this author
Gilles Chatellier MD, PhD

Gilles Chatellier MD, PhD

Georges Pompidou European Hospital, AP-HP, Assistance Publique—Hôpitaux de Paris, Paris Descartes University, Paris, France

Search for more papers by this author
Pierre Boutouyrie MD, PhD

Pierre Boutouyrie MD, PhD

INSERM U970, PARCC, Paris Descartes University, Paris, France

Georges Pompidou European Hospital, AP-HP, Assistance Publique—Hôpitaux de Paris, Paris Descartes University, Paris, France

Search for more papers by this author
Laurence Iserin MD

Laurence Iserin MD

Georges Pompidou European Hospital, AP-HP, Assistance Publique—Hôpitaux de Paris, Paris Descartes University, Paris, France

Search for more papers by this author
Damien Bonnet MD, PhD

Damien Bonnet MD, PhD

Department of Pediatric Cardiology, Complex Congenital Heart Disease Reference Center, M3C, Hôpital Necker Enfants malades, Assistance Publique—Hôpitaux de Paris, Paris Descartes University, Paris, France

Georges Pompidou European Hospital, AP-HP, Assistance Publique—Hôpitaux de Paris, Paris Descartes University, Paris, France

Search for more papers by this author
Elie Mousseaux MD, PhD

Elie Mousseaux MD, PhD

INSERM U970, PARCC, Paris Descartes University, Paris, France

Georges Pompidou European Hospital, AP-HP, Assistance Publique—Hôpitaux de Paris, Paris Descartes University, Paris, France

Search for more papers by this author
First published: 16 May 2017
Citations: 11

Abstract

Objectives

We aimed (1) determine if systemic right ventricle filling parameters influence systemic right ventricle stroke volume in adult patients with D-transposition of the great arteries (D-TGA) palliated by atrial switch, using cardiac magnetic resonance imaging and echocardiography, and (2) to study relationship of these diastolic parameters with exercise performance and BNP, in patients with preserved systolic systemic right ventricle function.

Design

Single-center, cross-sectional, prospective study.

Setting

In patients with D-TGA palliated by atrial switch, diastolic dysfunction of the systemic right ventricle may precede systolic dysfunction.

Methods

Forty-five patients with D-TGA and atrial switch and 45 age and sex-matched healthy subjects underwent cardiac magnetic resonance imaging and echocardiography. Filling flow-rates measured by phase-contrast cardiac magnetic resonance imaging were analyzed using customized software to estimate diastolic parameters and compared with exercise performance.

Results

In D-TGA, early filling of systemic right ventricle was impaired with a lower peak filling rate normalized by filling volume (Ef/FV measured by cardiac magnetic resonance imaging) and a higher early filling peak velocity normalized by early peak myocardial velocity (EUS/Ea measured by echocardiography) compared with controls (P ≤ .04). Stroke volume of systemic right ventricle showed a direct and significant association with pulmonary venous pathway size (respectively r = 0.50, P < .01). Systemic right atrial area and systemic right ventricle mass/volume index measured by cardiac magnetic resonance imaging, as well as Ef/FV were significantly correlated with exercise performances and BNP (P < .01). All correlations were independent of age, gender, body mass index and blood pressure.

Conclusions

Systemic right ventricle pre-load and stroke volume depend mainly on intraatrial pathway function. Moreover, systemic right ventricle remodeling and right atrial dysfunction impair systemic right ventricle filling, leading to BNP increase and exercise limitation. Cardiac magnetic resonance imaging should assess systemic right ventricle filling abnormalities in D-TGA patients.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.