Key result
Mitral valve prolapse linked to ~6-point worse basal LV longitudinal strain versus controls.
Why the study?
Patients with mitral valve prolapse exhibit altered regional contraction patterns, but quantification using CMR feature tracking strain analysis compared to controls was lacking.
Does mitral valve prolapse alter regional myocardial strain patterns compared to healthy controls?
Observational (n=182)
No
Does mitral valve prolapse alter regional myocardial strain patterns compared to healthy controls?
Mean Difference: 6 (95% CI 3.1–9)
Absolute Event Rate: -27.4% vs -33.4%
Patients with mitral valve prolapse exhibit a distinct regional contraction pattern characterized by impaired basal and increased apical longitudinal strain, despite having preserved global LV strain.
Regional strain changes in mitral valve prolapse should not alter management; extends echocardiographic observations with CMR but leaves prognostic value open.
Purpose Echocardiographic studies have shown that patients with mitral valve prolapse (MVP) exhibit altered regional contraction patterns. With cardiovascular magnetic resonance (CMR) becoming increasingly important in the evaluation of global and regional cardiac function, we aimed to quantify the regional contraction patterns of patients with MVP using CMR feature tracking (FT) strain analysis in comparison to a control group. Methods Of all patients who underwent CMR scans from 2013 to 2022 at our institution, 132 patients with MVP were identified and compared to 50 controls without any cardiac condition. CMR scans were performed on 1.5-T and 3-T scanners, and CMR-FT strain analysis was performed on cine images using MEDIS QStrain 4.1. The primary endpoints were regional peak left ventricular (LV) longitudinal strain values. Secondary endpoints included LV global circumferential strain (GCS) and global longitudinal strain (GLS) and left atrial (LA) reservoir strain and right ventricular (RV) free wall longitudinal strain. Differences between groups were assessed using linear regression models, adjusting for age and sex. Results Patients with MVP showed worse regional peak longitudinal strain compared to controls in the basal and part of the medial LV segments, especially in segments S1, S4, S6, S7, and S12. In contrast, the apical segments S13, S14, S15, and S16 showed better strain values. Additionally, LA reservoir strain was reduced in MVP patients. LV GCS, LV GLS, and RV free wall longitudinal strain were similar between both groups. Conclusion While patients with MVP showed preserved LV GCS and GLS compared to controls, LV regional longitudinal strain analysis showed impaired strain in the basal segments and increased strain in the apical segments.
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Li et al. (2026) conducted an observational in Mitral valve prolapse (n=182). Mitral valve prolapse vs. Healthy controls without cardiac condition was evaluated on Regional peak left ventricular longitudinal strain in the basal anterolateral segment (S6) (MD +6.0 percentage points, 95% CI 3.1-9.0). Mitral valve prolapse was associated with impaired regional longitudinal strain in basal left ventricular segments (e.g., +6.0 percentage points in the basal anterolateral segment) and increased strain in apical segments compared to healthy controls.
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