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Published on: February 17, 2023
Neuromuscular implications in left ventricular hypertrabeculation/noncompaction
Josef Finsterer1, Claudia Stöllberger, Gerhard Blazek
1Krankenanstalt Rudolfstiftung, Austria. duarte@aonmail.at
Insights
Left ventricular hypertrabeculation/noncompaction (LVHT), a cardiomyopathy, is linked to neuromuscular disorders (NMD). Early cardiac screening for NMD patients and neurological evaluation for LVHT patients are crucial for timely diagnosis and management.
Area of Science:
- Cardiology
- Neurology
- Genetics
Background:
- Left ventricular hypertrabeculation/noncompaction (LVHT) is an unclassified cardiomyopathy.
- LVHT is increasingly recognized in association with various neuromuscular disorders (NMD).
Purpose of the Study:
- To review recent advances in understanding the association between LVHT and NMD.
- To highlight the importance of integrated cardiological and neurological evaluations.
Main Methods:
- Literature review of studies investigating LVHT in patients with NMD.
- Analysis of reported cases and prevalence data.
Main Results:
- LVHT is found in patients with dystrophinopathy, laminopathy, myotonic dystrophy, Barth syndrome, and mitochondrial disorders, among others.
- NMD is detected in a significant proportion (up to 80%) of patients with LVHT.
- Barth syndrome and mitochondrial disorders show the highest frequency of LVHT co-occurrence.
Conclusions:
- Early and comprehensive cardiological assessment is recommended for all NMD patients.
- Thorough neurological investigation is warranted for all LVHT patients.
- Integrated diagnostic approaches are essential for managing patients with co-existing LVHT and NMD.
Abstract:
This review focuses on recent advances in the association between left ventricular hypertrabeculation/noncompaction (LVHT), a form of unclassified cardiomyopathy, and neuromuscular disorders (NMD). So far, LVHT has been found in single patients with dystrophinopathy, dystrobrevinopathy, laminopathy, zaspopathy, myotonic dystrophy, infantile glycogenosis type II (Pompe's disease), myoadenylate-deaminase deficiency, mitochondriopathy, Barth syndrome, Friedreich ataxia, and Charcot-Marie-Tooth disease. Most frequently LVHT is found in patients with Barth syndrome and mitochondrial disorders. The prevalence of LVHT in NMD patients is not known. On the contrary, NMD can be detected in up to four fifths of the patients with LVHT. Because LVHT is associated with an increased risk of rhythm abnormalities and heart failure, it is essential to detect LVHT as soon as possible. Because of adequate therapeutic options, all patients with NMD should undergo a comprehensive cardiological examination as soon as their neurological diagnosis is established. In reverse, all patients with LVHT should undergo a comprehensive neurological investigation following the detection of LVHT.
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