Atrial fibrillation is the most common persistent arrhythmia in the clinic. It affects a wide range of populations with high incidence, morbidity and mortality. Clinical studies have shown that ablation is one of the best means for the treatment of atrial fibrillation. However, after receiving ablation, some patients may experience atrial tachycardia and thus feel even deteriorated feelings. Understanding the predicting factors, electrophysiological mechanisms, and differential diagnosis and treatment strategies for post-ablation atrial tachycardia is essential for reducing the incidence and for the management of post-ablation atrial tachycardia. Therefore, we summarize the research progress of the above-mentioned aspects, and correspondingly proposes further research directions.
Atrial Fibrillation ; Catheter Ablation ; Humans ; Tachycardia, Supraventricular/surgery* ; Treatment Outcome

To explore the safety and efficacy for radiofrequency ablation of paroxysmal supraventricular tachycardia (PSVT) guided by Carto Univu three-dimensional mapping system.
 Methods: A total of 99 patients with PSVT underwent radiofrequency catheter ablation (RFCA) were assigned to a Carto Univu group (51 patients) and a two-dimensional X-ray group (48 patients) according to the mapping method. The operation time, X-ray exposure time, X-ray exposure dose, dose area product (DAP), operation success rate and complication rate were compared between the two groups.
 Results: The Carto Univu group and the two-dimensional X-ray group were not significant difference in the operation time, the X-ray exposure time of placing catheter, the X-ray DAP of placing catheter, the number of discharge, the discharge power, and the total discharge time (P>0.05). The mapping and ablation time, total exposure time, mapping and ablation DAP and total DAP in the Carto Univu group were significantly lower than those in the two-dimensional X-ray group (P<0.01). In the right accessory pathway cases, the mapping and ablation DAP and the total DAP in the Carto Univu group decreased compared with X-ray group (P<0.05), but it decreased more profound (P<0.01) in the left accessory pathway cases and the dual atrioventricular nodal pathways cases. Seven cases in the Carto Univu group achieved "zero X-ray", including 5 cases of the dual atrioventricular nodal pathways and 2 cases of the left accessory pathway. The immediate success rate for the two groups was 100%. After 3-12 months of follow-up, there was no recurrence in the Carto Univu group but 3 suspected recurrences in the two-dimensional X-ray group. In addition, no complications occurred in the two groups. 
 Conclusion: Carto Univu electroanatomic mapping system can guide PSVT safely and effectively during radiofrequency ablation and reduce radiation exposure to both doctors and patients. It is especially suitable for dual atrioventricular nodal pathways, which may even achieve "zero X-ray". Perhaps Carto Univu will be the first choice for RFCA of dual atrioventricular nodal pathways.
Catheter Ablation ; instrumentation ; methods ; Humans ; Imaging, Three-Dimensional ; instrumentation ; methods ; Operative Time ; Radiation Exposure ; prevention & control ; statistics & numerical data ; Radiography ; statistics & numerical data ; Recurrence ; Tachycardia, Supraventricular ; diagnostic imaging ; surgery ; Treatment Outcome

Atrial Fibrillation ; surgery ; Catheter Ablation ; adverse effects ; Female ; Humans ; Male ; Middle Aged ; Tachycardia, Supraventricular ; diagnosis ; surgery

Patients presenting for emergency abdominal procedures often have medical issues that cause both general anaesthesia and central neuraxial blockade to pose significant risks. Regional anaesthetic techniques are often used adjunctively for abdominal procedures under general anaesthesia, but there is limited published data on procedures done under peripheral nerve or plexus blocks. We herein report the case of a patient with recent pulmonary embolism and supraventricular tachycardia who required colostomy refashioning. Ultrasonography-guided regional anaesthesia was administered using a combination of ilioinguinal-iliohypogastric, rectus sheath and transversus abdominis plane blocks. This was supplemented with propofol and dexmedetomidine sedation as well as intermittent fentanyl and ketamine boluses to cover for visceral stimulation. We discuss the anatomical rationale for the choice of blocks and compare the anaesthetic conduct with similar cases that were previously reported.
Abdominal Wall ; surgery ; Aged ; Anesthesia, Conduction ; methods ; Anesthesia, General ; adverse effects ; Colostomy ; adverse effects ; methods ; Conscious Sedation ; methods ; Dexmedetomidine ; administration & dosage ; Fentanyl ; administration & dosage ; Hemodynamics ; Humans ; Ketamine ; administration & dosage ; Laparoscopy ; Male ; Nerve Block ; methods ; Pain, Postoperative ; Postoperative Period ; Propofol ; administration & dosage ; Pulmonary Embolism ; complications ; Reoperation ; methods ; Tachycardia, Supraventricular ; complications ; Ultrasonography, Interventional

This study reports our early experience with thoracoscopic division of vascular rings. Three patients were reviewed; their ages at surgery were 25 months, 4 years, and 57 years. All patients were suffering from complete vascular rings involving combinations of the right aortic arch, left ligamentum arteriosum, Kommerell's diverticulum, and retroesophageal left subclavian artery. The median surgical time was 180.5 minutes, and the patients showed immediate recovery. Three complications, namely chylothorax, transient supraventricular tachycardia, and left vocal cord palsy, were observed. Our early experience indicates that thoracoscopic division of a vascular ring may provide early recovery and could be a promising operative choice.
Aorta, Thoracic ; Chylothorax ; Diverticulum ; Humans ; Operative Time ; Subclavian Artery ; Tachycardia, Supraventricular ; Thoracic Surgery, Video-Assisted ; Vocal Cord Paralysis

Atrial Appendage ; physiopathology ; Catheter Ablation ; Child ; Child, Preschool ; Female ; Humans ; Male ; Tachycardia, Ectopic Atrial ; etiology ; surgery ; Tachycardia, Supraventricular ; etiology ; surgery

Adolescent ; Catheter Ablation ; Child ; Child, Preschool ; Female ; Humans ; Infant ; Male ; Tachycardia, Supraventricular ; surgery

Adult ; Catheter Ablation ; methods ; Humans ; Male ; Radial Artery ; surgery ; Tachycardia, Supraventricular ; surgery

Catheter Ablation ; methods ; Heart Atria ; surgery ; Heart Defects, Congenital ; surgery ; Humans ; Postoperative Complications ; prevention & control ; Tachycardia, Supraventricular ; prevention & control

Aged ; Catheter Ablation ; adverse effects ; Echocardiography ; Heart Atria ; Humans ; Male ; Postoperative Complications ; diagnostic imaging ; Tachycardia, Supraventricular ; diagnostic imaging ; surgery ; Thrombosis ; etiology