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. 2022 May 2:9:856160.
doi: 10.3389/fcvm.2022.856160. eCollection 2022.

Prognosis of Adults With Isolated Left Ventricular Non-Compaction: Results of a Prospective Multicentric Study

Affiliations

Prognosis of Adults With Isolated Left Ventricular Non-Compaction: Results of a Prospective Multicentric Study

Hilla Gerard et al. Front Cardiovasc Med. .

Abstract

Background: Whether left ventricular non-compaction (LVNC) bears a different prognosis than dilated cardiomyopathy (DCM) is still a matter of debate.

Methods: From a multicenter French prospective registry, we compared the outcomes of 98 patients with LVNC and 65 with DCM. The primary endpoint combined cardiovascular death, heart transplantation, and hospitalization for cardiovascular events. The two groups presented similar outcomes but different left ventricular ejection fractions (LVEF) (43.3% in LVNC vs. 35.95% in DCM, p = 0.001). For this reason, a subgroup analysis was performed comparing only patients with LVEF 45%, including 56 with LVNC and 49 with DCM.

Results: Among patients with LVEF 45%, at 5-year follow-up, the primary endpoint occurred in 33 (58.9%) among 56 patients with LVNC and 18 (36.7%) among 49 patients with DCM (p = 0.02). Hospitalization for heart failure (18 [32.14%] vs. 5 [10.20%], p = 0.035) and heart transplantation were more frequent in the LVNC than in the DCM group. The incidences of rhythmic complications (24 [42.85%] vs. 12 [24.48%], p = 0.17), embolic events, and cardiovascular death were similar between LVNC and DCM cases. Among the 42 patients with LVNC and LVEF > 45%, the primary endpoints occurred in only 4 (9.52%) patients, including 2 hospitalizations for heart failure and 3 rhythmic complications, but no embolic events.

Conclusion: In this prospective cohort, patients with LVNC who have left ventricular dysfunction present a poorer prognosis than DCM patients. Heart failure events were especially more frequent, but embolic events were not. Patients with LVNC and preserved ejection fraction present very few events in 5 years.

Keywords: dilated cardiomyopathy registry; heart failure; left ventricular non-compaction; prognosis; registry.

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Conflict of interest statement

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Figures

Figure 1
Figure 1
Flow chart.
Figure 2
Figure 2
Survival free from primary outcome at 5-year follow-up in the whole population of 98 LVNC and 65 DCM cases. LVNC, left ventricular non-compaction; DCM, dilated cardiomyopathy.
Figure 3
Figure 3
Survival free from primary outcome at 5-year follow-up in patients with left ventricular ejection fraction <45%. LVNC, left ventricular non-compaction; DCM, dilated cardiomyopathy.
Figure 4
Figure 4
Survival free from primary outcome at 5-year follow-up in patients with LVNC depending on their left ventricular ejection fraction. LVNC, left ventricular non-compaction; LVEF, left ventricular ejection fraction.

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