Key result
Preoperative static exercise CMR correlated strongly with 14-day LVEF after aortic valve surgery (r up to 0.87; ICC 0.76-0.86), but did not predict 6-month LVEF.
Why the study?
Does preoperative cardiovascular magnetic resonance with static exercise testing predict early (14-day) and mid-term (6-month) ventricular reverse remodeling after aortic valve surgery in patients with severe aortic regurgitation?
Cohort (n=20)
Does preoperative cardiovascular magnetic resonance with static exercise testing predict early (14-day) and mid-term (6-month) ventricular reverse remodeling after aortic valve surgery in patients with severe aortic regurgitation?
Preoperative static exercise CMR accurately anticipates the early 14-day postoperative dip in LVEF after aortic valve surgery for severe aortic regurgitation, but cannot predict 6-month ventricular recovery.
Answers are grounded in this paper and cite their sources.
CMR-SE may aid prediction of post-AVS remodeling in severe AR; leaves open routine adoption pending validation in larger cohorts.
Little is known about the timing and trajectory of reverse remodeling after aortic valve surgery (AVS) in severe aortic regurgitation (AR), and better predictors of postoperative ventricular function are needed. Cardiovascular magnetic resonance (CMR) with static exercise (SE) testing may help anticipate the ventricular response to AVS, but its predictive value has not been established. In this prospective pilot study, 20 patients with severe AR referred for AVS underwent CMR, including assessment during SE, with follow-up CMR at 14 days and 6 months. Repeated-measures analysis of variance (ANOVA) characterized the time course of each parameter, decomposing the time effect into linear and quadratic components. Left ventricular (LV) end-diastolic volume decreased progressively, mainly following a linear pattern (η2 0.795), with most of the reduction by 14 days. LV end-systolic volume declined continuously through 6 months (linear component only, η2 0.711). LV ejection fraction (LVEF) described a V-shaped curve, falling at 14 days before recovering above baseline by 6 months (quadratic component predominant, η2 0.358). Right ventricular parameters remained stable. SE-induced changes mirrored the early postoperative response and correlated strongly with 14-day LVEF (r up to 0.87), with good agreement between SE-LVEF and 14-day LVEF (intraclass correlation coefficient [ICC] 0.76-0.86); no baseline or SE parameter predicted LVEF at 6 months. AVS for severe AR induces early, heterogeneous LV reverse remodeling, with an initial LVEF dip followed by recovery by 6 months. Preoperative CMR with SE reproduces the early postoperative hemodynamic response and predicts short-term but not mid-term ventricular recovery.
No takes yet. Share an insight, caveat, or question.
Alegret et al. (2026) conducted a cohort in Severe aortic regurgitation referred for aortic valve surgery (n=20). Preoperative static exercise cardiovascular magnetic resonance before aortic valve surgery was evaluated on Left ventricular reverse remodeling and ejection fraction at 14 days and 6 months (r up to 0.87; ICC 0.76-0.86). Preoperative static exercise CMR correlated strongly with 14-day LVEF after aortic valve surgery (r up to 0.87; ICC 0.76-0.86), but did not predict 6-month LVEF.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: