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507 A Novel Method for Quantification of Left Ventricular Hypertrabeculation/Noncompaction Using Two-Dimensional Echocardiography
  1. A Khosroshahi Jamei1,
  2. K Sayadpoor2,
  3. A Kocharian3,
  4. A Kocharin4,
  5. A Zeinaloo5,
  6. A Kiani4,
  7. E Malakan4 Pediatric Cardiology Group of Tehran University and Urmieh University
  1. 1Urmia University, Urmia
  2. 2Pediatric Cardiology, Tehran University of Medical Sciences
  3. 3Tabiz University of Medical Science
  4. 4Tehran University of Medical Sciences
  5. 5Tehran Medical University, Tehran, Iran


Objectives There is not yet a general consensus about the diagnosis of left ventricular noncompaction. The echocardiographer may miss the areas with maximal noncompaction leading to a misdiagnosis. Accordingly, we suggested a new method to measure the percentage of myocardial hypertrabeculation/noncompaction using two-dimensional echocardiography.

Patients In this study, this new method was examined on 3 noncompaction, 26 dilated cardiomyopathy, and 25 normal subjects.

Results The mean percentages of myocardial hypertrabeculation/noncompaction were 3.59±2.27 in control group, 8.86±5.52 in dilated cardiomyopathic patients, and 38.1±30.8 in noncompaction patients. A value of 16% could distinguish left ventricular noncompaction from dilated cardiomyopathy with 92% specificity and 100% sensitivity and from normal subjects with 100% specificity and sensitivity. This percentage had a statistically significant association with noncompacted to compacted myocardial thickness ratio (P<0.001).

Key conclusions This method showed good correlations with the other echocardiographic and magnetic resonance criteria. However, it is not dependent on finding the area of maximal involvement.

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