Int J Sports Med 2010; 31(1): 58-64
DOI: 10.1055/s-0029-1241209
Clinical Sciences

© Georg Thieme Verlag KG Stuttgart · New York

Echocardiography of the Right Ventricle in Athlete's Heart and Hearts of Normal Size Compared to Magnetic Resonance Imaging: Which Measurements Should be Applied in Athletes?

J. Scharhag1 , 2 , T. Thünenkötter1 , 3 [*] , A. Urhausen3 , G. Schneider4 , W. Kindermann1
  • 1Institute for Sports and Preventive Medicine, University of Saarland, Saarbrücken, Germany
  • 2University Outpatient Clinic, Centre for Sports Medicine, University Potsdam, Germany
  • 3Centre of Sports Medicine and Prevention, Hospital Centre Luxemburg – Clinique d'Eich, Luxemburg
  • 4Clinics of Radiology, University Clinics of Saarland, Homburg, Germany
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Publikationsverlauf

accepted after revision September 08, 2009

Publikationsdatum:
22. Dezember 2009 (online)

Abstract

Right ventricular (RV) pathologic hypertrophy and cardiomyopathy have been reported to be related to ventricular arrhythmias and sudden cardiac death in athletes. However, it is unclear which echocardiographic measurements reflect RV dimensions in athlete's heart (AH) correctly. We aimed to compare two-dimensional echocardiography of the RV in AH and normal hearts to magnetic resonance imaging (MRI), and derive recommendations for RV echocardiography in athletes. Twenty-three healthy male endurance athletes with AH (A; 28±4 yrs) and 26 healthy untrained males (C; 26±4 yrs) matched for body-dimensions were examined. In recommended echocardiographic parasternal and 4-chamber views, three enddiastolic RV free wall-thicknesses (T1,T5,T9) and RV diameters were determined (M-mode enddiastolic diameter [RV-EDD]; longitudinal [RV-LAX], sagittal, outflow-tract and tricuspid valve anulus diameters). MRI determined RV enddiastolic volumes (RV-EDV) and masses (RVM) in A and C were: 162±29 vs. 136±15 ml and 76±10 vs. 59±13 g (p<0.001). Significant correlations between RV-EDV and RV-EDD (r=0.49; p=0.001) as well as RV-LAX (r=0.38; p=0.01), and RVM and T5 (r=0.52; p=0.01) were found. For RV echocardiography, significant differences between A and C were documented for RV-EDD (medians [quartiles]: A: 26 mm [24/29 mm]; C: 22 mm [21/27 mm]; p=0.04; measurable in 49/49 subjects), and in the parasternal short axis view for T5 (A: 6.0 mm [5.4/7.8 mm]; C: 5.0 mm [4.5/5.2 mm]; p=0.04; measurable in 22/49). In conclusion, two-dimensional echocardiographic RV measurements offer only a limited potential to reflect true RV dimensions. Only RV-EDD may differentiate between normal hearts and exercise related RV adaptations in AH, and is the only recommendable parameter to be measured in athletes routinely. In unclear cases additional methods should be used to examine the RV in athletes.

References

1 T. Thünenkötter has contributed equally

Correspondence

PD Dr. Jürgen Scharhag

University Outpatient Clinic

Centre for Sports Medicine

University Potsdam

14469 Potsdam

Germany

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