Empirical Studies of Agile Software Development to Learn Programming Skills

This paper presents a programming education support method based on Agile Development that encourages and builds on communication between students. Through mutual discussion, students using our approach transform their ideas into software and cooperate to write a program. The students complete the software through repetition and programming. Before completing the software program, the students learn to solve problems by working together. The students are encouraged to think and share ideas, and gain experience writing software. With this approach, students not only learn how to write programs, but also increase their logical thinking, problem-solving, and communication skills

A case of typical atrial flutter causing unexpected advanced atrioventricular block despite lateral cavotricuspid isthmus ablation

Here, we report a case of a 69-year-old patient with paroxysmal atrial fibrillation and inducible typical atrial flutter who required catheter ablation. After pulmonary vein isolation, cavotricuspid isthmus ablation was performed. During ablation at a lateral site of the cavotricuspid isthmus, a spiky potential appeared at the distal electrode of the ablation catheter, and subsequently, a 2:1 atrioventricular (AV) block occurred. Radiofrequency (RF) delivery at the same site caused a similar phenomenon, implying that the spiky potential may reflect a slow pathway potential as an anatomical variant of the rightward extension of the AV node

Atrial tachycardia in a patient with arrhythmogenic right ventricular cardiomyopathy/dysplasia

We describe a 49-year-old woman with atrial tachycardia (AT) and arrhythmogenic right ventricular cardiomyopathy/dysplasia. Cardiac magnetic resonance images showed a markedly dilated right atrium and right ventricle. Electroanatomical mapping showed that the AT originated from the right atrial appendage

Right atrial tachycardia with 2:1 intra-atrial conduction

In a case of atrial tachycardia (AT) originating from the inferolateral right atrium, cycle length (CL) alternans was observed. Conduction at the longer CL was to the high right atrium (HRA), His bundle electrogram region (HBE), and coronary sinus (CS). Conduction at the shorter CL was to the HRA, with that to the HBE and CS blocked