Project description:Graphical abstract Highlights PIMSRA offers a less invasive option to treat residual LVOTO after ASA. Multimodality imaging is necessary to guide this procedure. Myocardial contrast echocardiography can be used to confirm successful PIMSRA.

| S-EPMC9510671 | biostudies-literature

Microcatheter-facilitated alcohol septal ablation for residual left ventricular outflow tract obstruction.

Project description: Not available

| S-EPMC11422669 | biostudies-literature

Ablation Index Predicts Successful Ablation of Focal Atrial Tachycardia: Results of a Multicenter Study.

Project description:A radiofrequency energy lesion transmurality marker incorporating power, contact force, and time (Ablation Index, AI) was shown to be associated with outcomes of catheter ablation (CA) of multiple arrhythmias, but was never systematically assessed in the CA of focal atrial tachycardias (AT). We aimed to evaluate the role of AI as a predictor of outcomes in focal AT CA, and therefore, retrospectively included 45 consecutive patients undergoing CA for focal AT in four referral electrophysiology laboratories. Clinical and procedural information were collected. For each patient, maximum and mean (by averaging maximum AI values for each radiofrequency ablation lesion) AI were measured. The primary outcome was focal AT-free survival, and was systematically assessed with periodical Holter monitors or cardiac implantable electronic devices. CA was acutely effective in each case; however, 20% (n = 9) of the study population experienced a focal AT recurrence over a median follow-up of 288 days. Both maximum and mean AI values were significantly higher among patients without AT recurrences (maximum AI = 568 ± 91, mean AI = 426 ± 105) than in patients with AT relapses (maximum AI = 447 ± 142, mean AI = 352 ± 76, p = 0.036, and p = 0.028, respectively). The optimal cutoffs associated with freedom from recurrences were 461 for maximum AI (sensitivity, 0.89; specificity, 0.56) and 301 for mean AI (sensitivity, 0.97; specificity, 0.44). In a time-to-event analysis, maximum AI was significantly associated with survival free from AT recurrence (p = 0.001), whereas mean AI was not (p = 0.08). In summary, maximum AI is the best procedural parameter associated with the outcomes of CA for focal AT, and may help standardize the procedural approach.

| S-EPMC8999753 | biostudies-literature

Image integration guided ablation of left outflow tract ventricular tachycardia: Is coronary angiography still necessary?

Project description: Not available

| S-EPMC5998689 | biostudies-literature

Treatment of Severe Left Ventricular Outflow Tract Obstruction and Mitral Regurgitation With Alcohol Septal Ablation.

Project description: Not available

| S-EPMC9556931 | biostudies-literature

Successful Catheter Ablation for an Extremely Rare Case of Speech Induced Atrial Tachycardia.

Project description: Not available

| S-EPMC9643570 | biostudies-literature

Successful Open Chest Epicardial Ablation for Refractory Ventricular Tachycardia in an LVAD Recipient.

Project description:A patient with history of dilated cardiomyopathy, a cardiac resynchronization therapy defibrillator, and endocardial ablation presented for refractory ventricular tachycardia 3 years after implantation of a Jarvik 2000 left ventricular assist device (Jarvik Heart, Inc., New York, New York). Open-chest epicardial ablation safely and effectively terminated the arrhythmia, without ventricular tachycardia recurrence at 9-month follow-up and in the absence of complications during the hospital stay. (Level of Difficulty: Advanced.).

| S-EPMC8311376 | biostudies-literature

Bipolar radiofrequency catheter ablation of incessant ventricular tachycardia originating from anterolateral papillary muscle.

Project description: Not available

| S-EPMC11628808 | biostudies-literature