The role of three-dimensional echocardiography in the assessment of right XXXX after a half marathon: comparison with cardiac magnetic resonance imaging.

@entity1 @entity908 @entity67 @entity299
BACKGROUND: Although marathon running is associated with transient right ventricular (RV) @entity299 as detected by two-dimensional transthoracic echocardiography, quantitative assessment of the right ventricle is difficult because of its complex geometry. Little is known about the use of real-time three-dimensional echocardiography (RT3DE) in the detection of @entity299 after a half marathon. The aim of this study was to assess the extent of @entity67 after the completion of a half marathon using cardiac biomarkers, RT3DE, and cardiac magnetic resonance imaging (CMR). METHODS: A prospective study was performed in 15 individuals in 2009 participating in the Manitoba Half Marathon. Cardiac biomarkers (myoglobin, @entity908 kinase-MB and cardiac troponin T) were assessed and RT3DE and CMR were performed 1 week before, immediately after, and 1 week after the race. RESULTS: At baseline, cardiac biomarkers and ventricular function were within normal limits. Immediately following the half marathon, all @entity1 demonstrated elevated cardiac troponin T levels, with a median value of 0.37 ng/mL. RV ejection fraction, as assessed by RT3DE, decreased from 59    4% at baseline to 45    5% immediately following the race (P < .05). On CMR, RV end-diastolic volume increased after the half marathon, and the RV ejection fraction was reduced, at 47    5% compared with 60    2% at baseline (P < .05). There were strong linear correlations between RV ejection fraction assessed by RT3DE and CMR at baseline and after the half marathon (r = 0.69 and r = 0.87, P < .01, respectively). CONCLUSIONS: Compared with CMR, RT3DE is a feasible and reproducible method of assessing transient @entity67 in athletes completing a half marathon.
