Left Ventricular non Compaction cardiomyopathy (LVNC)

Perfusfind S.L.
Echocardiography Sep 1, 2021 0
In LVNC, the lower left chamber of the heart, called the left ventricle, contains bundles or pieces of muscle that extend into the chamber. These pieces of muscles are called trabeculations. During development, the heart muscle is a sponge-like network of muscle fibers. As normal development progresses, the trabeculations become compacted transforming the heart muscle from sponge-like to smooth and solid. LVNC occurs when compaction does not occur. These trabeculations typically occur at the bottom of the heart called the apex but can be seen anywhere in the left ventricle. Individuals with LVNC may also have another type of heart muscle disease (hypertrophic cardiomyopathy, dilated cardiomyopathy or restrictive cardiomyopathy). 
 
First you have some videos (videos 1 to 4 from one case, and 5 to 7 from another) and the last slide is an explanatory image.

Video 1: This apical 4 chamber view shows a dilated LV with abnormal trabeculation at the apex. Note the diminished EF as well as smoke in the LV.

Video 2: Parasternal views near the base show the beginnings of noncompacted myocardium along the inferior and lateral wall. 

Video 3: Closer to the apex the noncompacted myocardium is more evident with trabeculations seen in the anterolateral wall and inferior wall. The ratio of noncompacted to compacted myocardium here is roughly 2:1. 

Video 4: Color Doppler shows evidence of color flow within the small crypts in the inferior and lateral walls. 

Video 5: This parasternal long axis view already shows some abnormalities at the apex. 

Video 6: Numerous LV small crypts along non compacted myocardium. Note the EF in this case is not as diminished as in the prior case. 

Video 7: Color Doppler in this 5 chamber view shows the flow inferior the numerous small crypts. 

LVNC (M)
 
Alex : is a last year medical student, very passionate about echo, POCUS and hand-held ultrasound devices.
He posts YouTube reviews of these, as well as interesting cases in Instagram (@mastersofultrasound) and Twitter (@mastersofultrasound).
 

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