The determinants of right ventricular function in patients with atrial septal defect

Three‐Dimensional Echocardiography in the Evaluation of Right Ventricular Global and Regional Systolic Function in Patients with Atrial Septal Defect before and after Percutaneous Closure

“…Negative relationship between RV systolic function and RV after load was demonstrated in patients with pulmonary hypertension . Our findings were compatible with a previously tissue Doppler study which reported the relationship between pulmonary vascular bed and RV function in patients with ASD . In our study, the correlation coefficient between regional EF in the inflow compartment and PVR was the highest among the three compartments, indicating RV regional systolic function in the inflow compartment is more sensitive to after load than the other two regions.…”

“…38,39 Our findings were compatible with a previously tissue Doppler study which reported the relationship between pulmonary vascular bed and RV function in patients with ASD. 40 In our study, the correlation coefficient between regional EF in the inflow compartment and PVR was the highest among the three compartments, indicating RV regional systolic function in the inflow compartment is more sensitive to after load than the other two regions. We also found that the relationship between conventional systolic parameters and PVR in postclosure patients was statistically significant, but the correlation coefficients were lower than those between RT3DE parameters and PVR.…”

RV Dysfunction In Pulmonary Hypertension Is Independently Related To Pulmonary Artery Stiffness

“…In a prior study of 33 patients with atrial septal defect, an ultrasoundderived index of stiffness correlated better with the RV Tei index than with PA pressures (29). Elevated PA stiffness was associated with lower RVEF, increased RV hypertrophy and dilation, and higher workload on the RV as determined by the RVSWI.…”

Evaluation of Pulmonary Artery Stiffness in Patients with Obstructive Sleep Apnea Syndrome

“…It is reported that the formula (maximal frequency shift/acceleration time) indicated elastic properties of arteries (aorta or pulmonary artery) . PAS has been reported to be increased in subjects with bicuspid aortic valve, mitral stenosis, and systemic lupus erythematosus . Also, improvement in PAS has been stated after percutaneous mitral balloon valvuloplasty in patients with mitral stenosis in a study conducted by Mahfouz et al Primary pulmonary diseases are (including OSAS and chronic obstructive pulmonary disease) associated with hypoxia which cause the deterioration of pulmonary vascular bed .…”

“…A noninvasive evaluation of PAS can be implemented by an echocardiographic method which is firstly described for aorta in 1988 . PAS may increase as a result of many situations affecting right heart chambers . However, it has been still unknown whether elastic properties of pulmonary artery deteriorate in patients with OSAS.…”