Key result
Acute severe aortic regurgitation was associated with a higher peak diastolic pulmonary venous flow velocity (0.76 vs 0.40, p<0.001) and a restrictive Doppler pattern compared to chronic cases.
Why the study?
How do pulmonary venous and mitral flow velocities differ between patients with acute versus chronic severe aortic regurgitation?
Population
14 patients with severe aortic regurgitation in sinus rhythm, with ejection fractions > 40%.
Comparison
Acute severe aortic regurgitation (exposure) vs Chronic severe aortic regurgitation
Design
Cross-sectional
Authors
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May inform diastolic assessment in severe AR; leaves open need for validation in larger cohorts.
Observational (n=14)
How do pulmonary venous and mitral flow velocities differ between patients with acute versus chronic severe aortic regurgitation?
Absolute Event Rate: 0.76% vs 0.4%
p-value: p=< 0.001
Acute severe aortic regurgitation is characterized by a restrictive Doppler pattern with a retrograde atrial kick, distinguishing it from the abnormal relaxation pattern seen in chronic severe aortic regurgitation.
Vilacosta et al. (1997) conducted an observational in Severe aortic regurgitation (n=14). Acute severe aortic regurgitation vs. Chronic severe aortic regurgitation was evaluated on Peak diastolic velocity of the pulmonary venous flow (p=< 0.001). Acute severe aortic regurgitation was associated with a higher peak diastolic pulmonary venous flow velocity (0.76 vs 0.40, p<0.001) and a restrictive Doppler pattern compared to chronic cases.
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