Key result
Right ventricular Direct Flow possessed larger presystolic kinetic energy (0.4 ± 0.3 mJ) than other flow components (P<0.01) and a larger part of end-diastolic volume than LV Direct Flow (P<0.01).
Why the study?
How do the proportions and energetics of right ventricular blood flow components compare to the left ventricle in healthy subjects?
Population
10 healthy subjects
Comparison
Three-dimensional, time-resolved phase-contrast… vs Left ventricle (LV) flow components
Design
Cross-sectional
Authors
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RV-LV flow differences in healthy subjects warrant no practice change; leaves open relevance to disease or interventions.
Cross-Sectional (n=10)
How do the proportions and energetics of right ventricular blood flow components compare to the left ventricle in healthy subjects?
p-value: p=<0.01
4D flow MRI reveals that normal RV diastolic flow patterns preserve kinetic energy, creating favorable conditions for systolic ejection, which differs from LV flow dynamics.
Fredriksson et al. (2011) conducted a cross-sectional in Healthy (n=10). Right ventricular blood flow assessment via 4-D MRI vs. Left ventricular blood flow and other RV flow components was evaluated on Volume and kinetic energy of right ventricular flow components (p=<0.01). Right ventricular Direct Flow possessed larger presystolic kinetic energy (0.4 ± 0.3 mJ) than other flow components (P<0.01) and a larger part of end-diastolic volume than LV Direct Flow (P<0.01).
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