3. 1990-First diagnostic criteria
• LVNC
X (distance between epicardial surface and trough of the intertrabecular
recesses)
Y (distance between epicardial surface and peak of the trabeculations)
If X/Y< 0.5
if it progressively decreased from the papillary muscles toward the apex
Chin TK, Perloff JK, Williams RG, Jue K, Mohrmann R. Isolated noncompaction of left ventricular myocardiu.
A study of eight cases. Circulation 1990;82:507–13.
4. 1999-2ND Criteria
• LVNC
Noncompacted to compacted myocardium ratio needs to exceed a cut-off of
2.3
Ichida F, Hamamichi Y, Miyawaki T, et al. Clinical features of isolated noncompaction
of the ventricular myocardium. Long-term clinical course, hemodynamic
properties, and genetic background. J Am Coll Cardiol 1999;34:233–40
5. Other three
• Oechslin EN, Attenhofer Jost CH, Rojas JR, Kaufmann PA, Jenni R. Long
term
• follow-up of 34 adults with isolated left ventricular noncompaction: A
distinct cardiomyopathy with poor prognosis. J Am Coll Cardiol
2000;36:493–500.
• Belanger AR, Miller MA, Donthireddi UR, Najovits AJ, Goldman ME.
New classification scheme of left ventricular noncompaction and
correlation with ventricular performance. Am J Cardiol 2008;102:92–
6.
• Stanton C, Bruce C, Connolly H, et al. Isolated left ventricular
noncompaction syndrome.Am J Cardiol 2009;104:1135–8.
6. 2014-Latest:All 4 criteria to be fulfilled
LVNC
1. Prominent trabeculous formations along the left ventricular endocardial border visible
in end-diastole, distinct from papillary muscles, false tendons or aberrant bands
2. Trabeculations move synchronously with the compacted myocardium
3. Trabeculations form the noncompacted part of a two-layered myocardial structure, best
visible at end-systole
4. Perfusion of the intertrabecular spaces from the ventricular cavity is present at end-
diastole on colour Doppler echocardiography or contrast echocardiography
Refinement of echocardiographic criteria for left ventricular noncompaction Claudia Stöllberger,Birgit Gerecke,Josef
Finsterer,Rolf Engberding.International Journal of Cardiology 165 (2013) 463–467
7. Echocardiography
LV short axis
Mid systole
Non compaction to compaction ratio >2
More than 3 recesses
Recesses freely communicates to LV in diastole directly
8. MRI
• End diastole
• Non compaction:compaction is >2.3
• Non compaction LV mass>20% of global LV mass