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Single beat 3D echocardiography for the assessment of right ventricular dimension and function after endurance exercise: Intraindividual comparison with magnetic resonance imaging.

Schattke S, Wagner M, Hättasch R, Schroeckh S, Durmus T, Schimke I, Sanad W, Spethmann S, Scharhag J, Huppertz A, Baumann G, Borges AC, Knebel F - Cardiovasc Ultrasound (2012)

Bottom Line: CMR demonstrated a significant decrease in RV dimensions.Measured by sb3DE, this decrease of RV volumes was not significant.The dimensions of the RV measured by CMR are larger than measured by sb3DE.

View Article: PubMed Central - HTML - PubMed

Affiliation: Charité - Universitätsmedizin Berlin, Medizinische Klinik mit Schwerpunkt Kardiologie und Angiologie, Charité Campus Mitte, Charitéplatz 1, 10117 Berlin, Germany.

ABSTRACT

Background: Our study compares new single beat 3D echocardiography (sb3DE) to cardiovascular magnetic resonance imaging (CMR) for the measurement of right ventricular (RV) dimension and function immediately after a 30 km run. This is to validate sb3DE against the "gold standard" CMR and to bring new insights into acute changes of RV dimension and function after endurance exercise.

Methods: 21 non-elite male marathon runners were examined by sb3DE (Siemens ACUSON SC2000, matrix transducer 4Z1c, volume rates 10-29/s), CMR (Siemens Magnetom Avanto, 1,5 Tesla) and blood tests before and immediately after each athlete ran 30 km. The runners were not allowed to rehydrate after the race. The order of sb3DE and CMR examination was randomized.

Results: Sb3DE for the acquisition of RV dimension and function was feasible in all subjects. The decrease in mean body weight and the significant increase in hematocrit indicated dehydration. RV dimensions measured by CMR were consistently larger than measured by sb3DE.Neither sb3DE nor CMR showed a significant difference in the RV ejection fraction before and after exercise. CMR demonstrated a significant decrease in RV dimensions. Measured by sb3DE, this decrease of RV volumes was not significant.

Conclusion: First, both methods agree well in the acquisition of systolic RV function. The dimensions of the RV measured by CMR are larger than measured by sb3DE. After exercise, the RV volumes decrease significantly when measured by CMR compared to baseline.Second, endurance exercise seems not to induce acute RV dysfunction in athletes without rehydration.

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Related in: MedlinePlus

Boxplots of RV function and dimensions measured by CMR and sb3DE. RV ejection fraction (A), stroke volume (B), end-diastolic volume (C) and end-systolic volume (D) measured by CMR and sb3DE pre and post exercise. CMR shows larger volumes while the ejection fraction does not differ significantly
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Figure 3: Boxplots of RV function and dimensions measured by CMR and sb3DE. RV ejection fraction (A), stroke volume (B), end-diastolic volume (C) and end-systolic volume (D) measured by CMR and sb3DE pre and post exercise. CMR shows larger volumes while the ejection fraction does not differ significantly

Mentions: The volumes measured by sb3DE were significantly smaller than those measured by CMR (Table 4). However, there was no significant difference between the EF determined by the two methods (Figure 3). Figure 4 shows Bland-Altman plots comparing RV ejection fraction and dimensions measured by both methods.


Single beat 3D echocardiography for the assessment of right ventricular dimension and function after endurance exercise: Intraindividual comparison with magnetic resonance imaging.

Schattke S, Wagner M, Hättasch R, Schroeckh S, Durmus T, Schimke I, Sanad W, Spethmann S, Scharhag J, Huppertz A, Baumann G, Borges AC, Knebel F - Cardiovasc Ultrasound (2012)

Boxplots of RV function and dimensions measured by CMR and sb3DE. RV ejection fraction (A), stroke volume (B), end-diastolic volume (C) and end-systolic volume (D) measured by CMR and sb3DE pre and post exercise. CMR shows larger volumes while the ejection fraction does not differ significantly
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3306832&req=5

Figure 3: Boxplots of RV function and dimensions measured by CMR and sb3DE. RV ejection fraction (A), stroke volume (B), end-diastolic volume (C) and end-systolic volume (D) measured by CMR and sb3DE pre and post exercise. CMR shows larger volumes while the ejection fraction does not differ significantly
Mentions: The volumes measured by sb3DE were significantly smaller than those measured by CMR (Table 4). However, there was no significant difference between the EF determined by the two methods (Figure 3). Figure 4 shows Bland-Altman plots comparing RV ejection fraction and dimensions measured by both methods.

Bottom Line: CMR demonstrated a significant decrease in RV dimensions.Measured by sb3DE, this decrease of RV volumes was not significant.The dimensions of the RV measured by CMR are larger than measured by sb3DE.

View Article: PubMed Central - HTML - PubMed

Affiliation: Charité - Universitätsmedizin Berlin, Medizinische Klinik mit Schwerpunkt Kardiologie und Angiologie, Charité Campus Mitte, Charitéplatz 1, 10117 Berlin, Germany.

ABSTRACT

Background: Our study compares new single beat 3D echocardiography (sb3DE) to cardiovascular magnetic resonance imaging (CMR) for the measurement of right ventricular (RV) dimension and function immediately after a 30 km run. This is to validate sb3DE against the "gold standard" CMR and to bring new insights into acute changes of RV dimension and function after endurance exercise.

Methods: 21 non-elite male marathon runners were examined by sb3DE (Siemens ACUSON SC2000, matrix transducer 4Z1c, volume rates 10-29/s), CMR (Siemens Magnetom Avanto, 1,5 Tesla) and blood tests before and immediately after each athlete ran 30 km. The runners were not allowed to rehydrate after the race. The order of sb3DE and CMR examination was randomized.

Results: Sb3DE for the acquisition of RV dimension and function was feasible in all subjects. The decrease in mean body weight and the significant increase in hematocrit indicated dehydration. RV dimensions measured by CMR were consistently larger than measured by sb3DE.Neither sb3DE nor CMR showed a significant difference in the RV ejection fraction before and after exercise. CMR demonstrated a significant decrease in RV dimensions. Measured by sb3DE, this decrease of RV volumes was not significant.

Conclusion: First, both methods agree well in the acquisition of systolic RV function. The dimensions of the RV measured by CMR are larger than measured by sb3DE. After exercise, the RV volumes decrease significantly when measured by CMR compared to baseline.Second, endurance exercise seems not to induce acute RV dysfunction in athletes without rehydration.

Show MeSH
Related in: MedlinePlus