الفهرس 
Right Ventricle Anatomy
Underlying Mechanisms of Cyanosis in CHD:Only 14 pages are availabe for public view
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Abstract
Intracardiac shunting means abnormal flow of the blood in the heart because of a defect in the structure of either the ventricles or the atrias. Pulmonary hypertension is the leading cause of mortality in patients with congenital heart diseases.
Therefore, the right ventricle (RV) function is considered as one of the most important predictors of morbidity and mortality in congenital heart diseases.
In Our study, we evaluated the RV function in132 patients. These patients were divided into four groups including normal subjects, ASD patients, VSD patients, and PFO patients. Patients with obstructive heart disease or complex congenital heart disease were excluded.
We used tissue doppler and strain echocardiography parameters to assess both the diastolic and the systolic performance of the right ventricle. RV MPI, RV SW, tissue doppler velocities and strain rate curves were the main parameters measured in our study.
Our results showed higher values of the parameters measured in the ASD patients’ group compared to the normal subjects and the other intracardiac shunt’s patients. Also, ASD’s patients were associated with higher pulmonary artery pressure values and worse RV function parameters in general.
We concluded that the new echocardiographic measures are good and reliable tool to assess the right ventricle function in the patients with intracardiac shunts. Additionally, ASD patients are associated with worse outcome especially if they develop of elevated pulmonary artery pressure.