Related Experiment Video
Updated: Feb 8, 2026

Cox-Maze IV Procedure Concomitant with Valvular Surgery In Situs Inversus Dextrocardia: A Single-Center Experience in China
Published on: February 11, 2022
Cryoablation of the right anteroseptal or midseptal accessory pathways in children: A 2-year single-center experience
1School of Medicine, Tsinghua University & Department of Pediatric Cardiology, Heart Center, The First Hospital of Tsinghua University, Beijing, China.
Background:
Radiofrequency catheter ablation (RFCA) in the septum close to the atrioventricular node or His bundle has an increased risk of irreversible complications. Cryothermal energy has the advantages of reversible cryomapping and increased catheter stability. The study aims to evaluate the efficacy and safety of cryoablation of the right anteroseptal or midseptal accessory pathways (APs) in pediatric patients.
Method:
A retrospective review was performed with 26 pediatric patients (16 males and 10 females; median age 6.0 years and average body weight 24.9 kg) with paroxysmal supraventricular tachycardia (PSVT) in our Pediatric Heart Center from 2014 to 2016. Half of them had manifest APs. All the children underwent cryoablation for the treatment of PSVT because of the right anteroseptal or midseptal APs (16 cases had right anteroseptal APs and 10 cases had right midseptal APs).
Results:
Acute cryoablation success was achieved in 23 cases (88%, 23/26). Atrioventricular block (AVB) occurred in eight cases (31%, 8/26) during the procedures and normal atrioventricular conduction recovered in seven cases except a case with I°AVB. During follow-up, three cases recurred (13%, 3/23) and no permanent high degree AVB was found.
Conclusion:
Cryoablation of the right anteroseptal or midseptal APs in pediatric patients is both safe and effective.
Related Concept Videos
Accessory Organs
Lattice Centering and Coordination Number
Types of Unit Cells
Imagine taking a large number of identical...
Center of Gravity
Center of Gravity
To determine its location, the principle of moments can be utilized by dividing the object into...
Center of Mass
The knowledge of the center of mass can also help us to describe and predict the motion of objects. For example, when a ball is thrown...
C4 Pathway and CAM
C4 Pathway
The C4 pathway is used by plants such as...

