Abstract: Abstract：Cardiovascular disease is an important cause of maternal death with non-obstetric factors. Noncompaction of
the ventricular myocardium (NVM) is a rare congenital cardiomyopathy. The serious complications are heart failure,
arrhythmia, and thromboembolism. Transthoracic echocardiography is the main diagnostic method. At present, the main treatment method of pregnancy combined with NVM is control symptom by medication. Meanwhile, the safety of mother and
infant should be considered. It is considered appropriate to terminate pregnancy by cesarean section. This article analyzed
the diagnosis and treatment of three cases of pregnancy with NVM and one case of twin pregnancy with NVM reported in our
hospital, hoping to improve the clinical cognition and diagnosis of this disease during pregnancy.

Key words: pregnancy, noncompaction of the ventricular myocardium, cardiomyopathy, diagnosis, therapy