Patients with a secundum type atrial septal defect had significantly lower right atrial myocardial systolic strain compared to healthy controls (48.0% vs 100.2%, P=0.006).
Case-Control (n=46)
Does the presence of an atrial septal defect impair atrial myocardial deformation properties compared to healthy subjects?
Patients with atrial septal defect have impaired right atrial reservoir function and increased atrial stiffness as evidenced by reduced right atrial myocardial longitudinal lengthening.
Absolute Event Rate: 48% vs 100.2%
p-value: p=0.006
BACKGROUND: Atrial septal defect (ASD) is a common form of congenital heart defect in adults, which affects all cardiac chambers. Atrial myocardial function in patients with ASD has not yet been clearly elucidated. The aim of this study was to investigate atrial myocardial deformation properties in patients with ASDs. METHODS: The study involved 24 patients with a secundum type ASD, and 22 healthy subjects. Color Doppler myocardial imaging was used to measure left and right atrial myocardial systolic strain and strain rate values, together with peak systolic velocity, early velocity, and late diastolic velocity. RESULTS: There was no significant difference between the two groups with regard to age, gender, body mass index, heart rate, blood pressure, left atrial diameter, and ventricular function. The peak systolic atrial myocardial strain and strain rate values in each of the atrial walls studied were lower in the ASD group compared to those of the control group, but the difference reached statistical significance only in the case of the right atrial wall (right atrial strain: 48.0 +/- 32.7% vs 100.2 +/- 46.6%, P = 0.006; right atrial strain rate: 2.6 +/- 1.2/sec vs 3.8 +/- 1.2/sec, P = 0.024). CONCLUSION: The left to right cardiac shunt that results from ASD leads to a reduction in the right atrial myocardial longitudinal lengthening that occurs during ventricular ejection. These findings demonstrate that the reservoir function of the atrium is impaired and atrial stiffness increases in patients with ASDs.
Arat et al. (Mon,) conducted a case-control in Atrial septal defect (n=46). Secundum type atrial septal defect vs. Healthy subjects was evaluated on Right atrial myocardial systolic strain (p=0.006). Patients with a secundum type atrial septal defect had significantly lower right atrial myocardial systolic strain compared to healthy controls (48.0% vs 100.2%, P=0.006).