Why the study?
Does preoperative transmitral flow propagation velocity (Vp) predict left ventricular dysfunction requiring support after aortic valve replacement in high-risk patients with aortic stenosis?
Does preoperative transmitral flow propagation velocity (Vp) predict left ventricular dysfunction requiring support after aortic valve replacement in high-risk patients with aortic stenosis?
Preoperative left ventricular diastolic dysfunction, specifically a transmitral flow propagation velocity ≤40 cm/sec, independently predicts the need for cardiovascular support following aortic valve replacement in high-risk patients.
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Vp ≤40 cm/s may flag high-risk aortic stenosis patients needing postoperative support; hypothesis-generating and should not yet change practice.
Licker et al. (2010) studied this question.
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