Repeat echocardiography at one month of age showed only modest changes--both twins had mild right atrial dilation, mild to moderate right ventricular dilation with moderate hypertrophy and good qualitative systolic function, normal left ventricular size, and systolic function, mild central and right atrioventricular valve
regurgitation, and no evidence of a persistent PDA.
The length of right atrioventricular (AV) valve and left cusp of left atrioventricular valve
(AV) were longer in chick embryos belonging to control group as compared to those in experimental group but this was not statistically significant.
Intracardiac defects comprised a single atrioventricular valve
with a severely hypoplastic ventricle and severe subvalvar pulmonary stenosis (see Figure 3).
(13) In birds, the right atrioventricular valve
consists of a muscular flap of myocardium.
Operation for repair of the cleft left atrioventricular valve
regurgitation (LAVVR) and residual septal defect closure was done2-4.
Figure-2: Day 10 control chick heart showing two cusps of left atrioventricular valve
(1), interatrial septum (IAS), interventricular septum (IVS), right atrioventricular valve
(2), left atrium (LA), right atrium (RA ) left ventricle (LV ) and right ventricle (RV) (low magnification - 4x) Hematoxylin and Eosin staining.
Many risk factors associated with poor clinical outcomes in Fontan operation have been identified in clinical studies , which typically include high pulmonary vascular resistance, low ventricular ejection fraction, increased ventricular diastolic stiffness, and atrioventricular valve
While the atrioventricular valve
insufficiencies were analyzed, the medium and advanced insufficiencies were evaluated.
Two-thirds of patients with DCM, especially those over 55 years of age, have persistently low arterial pressure, ventricular arrhythmias and/or atrioventricular valve
incompetence and die within 5 years of their first symptom.
Anatomic variation of the right atrioventricular valve
At 12 weeks after presentation, results of an echocardiogram revealed persistent right atrioventricular valve
regurgitation, moderate ascites, and dilation of hepatic veins.
LAVA--left atrioventricular valve
atresia, LC--levocardia, LPSVC--left persistent superior vena cava.