Long term evaluation of electromechanical delay in patients with atrial septal defect after transcatheter closure

Abstract

Some studies have been showed that electromechanical delay, which may pose an increased tendency to atrial fibrillation, may prolong in patients with various clinical conditions. In addition, the electromechanical delay in patients with secundum type atrial septal defect (ASD) compared to healthy people have been reported previously. Therefore, in the present study, we prospectively evaluated the mid-term and long-term effects of the transcatheter closure of secundum type ASD on the lateral atrial conduction time (PA), septal PA, tricuspid PA, left and right intra-atrial electromechanical delay (ILeft-EMD and IRight-EMD, respectively) and inter-atrial electromechanical delay (IA-EMD) measured by means of Doppler echocardiography. Our prospective study included a total of 45 secundum type ASD patients who undergone percutaneous transcatheter closure from December 2012 to April 2015. All patients underwent transthoracic echocardiography (TTE) before the closure, at sixth and twelfth months after the closure. In comparison of the EMD sixth months after the device closure, there were statistically significant decrease in lateral PA, septal PA, tricuspid PA, ILeft-EMD, IRight-EMD and IA-EMD compared to pre-device closure values. Twelfth months after the device closure, we also observed statistically significant decrease in lateral PA, septal PA, tricuspid PA, ILeft-EMD, IRight-EMD and IA-EMD compared to 6-month post-device closure values. In the present study, we observed that the atrial EMD improves after device closure and continues to improve after twelfth month following post-device closure.

The effects of catheter ablation of outflow tract premature ventricular complexes on atrial electromechanical delay

“…Patients with PVCs can develop subclinical LA remodeling, LA enlargement, and as a result, longer atrial EMD intervals in addition to ventricular cardiomyopathy. 18,19 Atrioventricular dysynchrony and high diastolic filling pressures associated with PVC are thought to be the causes of this undesirable mechanical and electrical remodeling.…”

Late presenting partially displaced atrial septal closure device: Surgical vs percutaneous correction? A case report

“…It allows shunting of oxygenated blood from left atrium into right atrium leading to serious complications if not treated in time [2] . It can be classified into four different types that is ostium secundum, ostium primum, sinus venosus and coronary sinus ASD [3] . Currently there are two methods of repairing Atrial Septal Defect, percutaneous device closure or open surgical repair.…”

“…Currently there are two methods of repairing Atrial Septal Defect, percutaneous device closure or open surgical repair. Even though surgical repair of ASD is the current method of choice but percutaneous device closure is rapidly gaining popularity as it is less invasive with rapid restoration of hemodynamics [3] , [4] . In percutaneous device closure there are different types of ASD closure devices used, with the Amplatzer type being used more often with good results as reported in literature [1] , [2] .…”

Cost comparison of transcatheter and operative closures for patients with secundum atrial septal defects in Vietnam

“…In the past, secundum ASD treatment was mainly by operative closure, while in past few decades, transcatheter closure has been developed to provide an additional treatment option [ 5 ]. Device closure of secundum ASD has gradually improved to increase efficiency, reduce the risk of adverse events and, in particular, reduce treatment costs [ 6 , 7 ]. Currently, both operative and transcatheter closures are typically offered.…”