Left ventricular noncompaction cardiomyopathy: Recent advances

Area of Science:

• Cardiology
• Genetics
• Medical Diagnostics

Background:

• Left ventricular noncompaction (LVNC) is a rare, genetically heterogeneous cardiomyopathy.
• It can occur in isolation or with other cardiac, genetic, or neuromuscular conditions.
• Diagnosis has evolved from echocardiography to cardiac magnetic resonance, with evolving criteria.

Purpose of the Study:

• To review the current understanding of left ventricular noncompaction cardiomyopathy.
• To discuss diagnostic challenges and differential diagnoses.
• To explore clinical presentations, prognosis, and management considerations.

Main Methods:

• Literature review of studies and publications on left ventricular noncompaction.
• Analysis of diagnostic criteria evolution (echocardiography, cardiac magnetic resonance).
• Discussion of clinical manifestations, genetic patterns, and prognostic factors.

Main Results:

• Lack of universal diagnostic criteria leads to potential over-diagnosis.
• Differential diagnosis is crucial, distinguishing true LVNC from phenocopies or physiological variants.
• Clinical presentation varies widely, from asymptomatic to severe heart failure, arrhythmias, or sudden death.

Conclusions:

• Left ventricular noncompaction requires careful diagnostic consideration to avoid misdiagnosis.
• Prognosis is influenced by left ventricular dilatation, dysfunction, and fibrosis.
• Familial screening and specific considerations for athletes are recommended.