Reversible Left Ventricular Trabeculations in Pregnancy: Is This Sufficient to Make the Diagnosis of Left Ventricular Noncompaction?
Left ventricular noncompaction cardiomyopathy (LVNC) is a disorder characterized by significant ventricular trabeculations on cardiovascular imaging. The most common echocardiographic criteria used to define the disorder are the Jenni and Chin criteria.1,2 These criteria were developed after the observation that some patients, primarily children, had cardiomyopathies characterized by significant trabeculations associated with recesses. These criteria differ in that the Jenni criteria focus on comparing the noncompacted to compacted myocardium at end-systole whereas the Chin criteria compare the noncompacted to total myocardial thickness at end-diastole. Diagnosis of noncompaction based on imaging studies is variable but in one large review was estimated to involve 0.24% of the general population.3 Trabeculations fulfilling the criteria for LVNC have been seen in individuals with a variety of different disorders including sickle cell anemia, athletes, pregnancy, and dilated cardiomyopathy.4-7 In a retrospective evaluation of patients with systolic heart failure, patients fulfilling criteria for LVNC far exceed (23.6%) that reported in the general population.7
- Received June 30, 2014.
- Accepted July 7, 2014.