Journal of cardiovascular electrophysiology
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J. Cardiovasc. Electrophysiol. · Dec 2019
Comparative Study Observational StudyAblation index-guided 50 W ablation for pulmonary vein isolation in patients with atrial fibrillation: Procedural data, lesion analysis, and initial results from the FAFA AI High Power Study.
Radiofrequency high-power ablation appears to be a novel concept for atrial fibrillation (AF). The ablation index (AI) value has been associated with durability of pulmonary vein isolation (PVI). ⋯ AI-HP (50 W) ablation appears to be a feasible, safe, fast, and effective ablation technique for PVI.
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J. Cardiovasc. Electrophysiol. · Nov 2019
Pulmonary vein isolation using a higher power shorter duration CLOSE protocol with a surround flow ablation catheter.
The CLOSE protocol combines ablation index (AI) and ≤6 mm interlesion distance using standard power settings for the treatment of atrial fibrillation (AF). The purpose was to compare the safety and efficacy of a conventional CLOSE and a higher power shorter duration (HPSD)-CLOSE pulmonary vein isolation (PVI) strategy. ⋯ A higher-power short duration approach can shorten a CLOSE procedure and reduce ablation time without having a negative impact on safety or efficiency.
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J. Cardiovasc. Electrophysiol. · Nov 2019
Case ReportsAutomated external defibrillator use in a previously healthy 31-day-old infant with out-of-hospital cardiac arrest due to ventricular fibrillation.
Current resuscitation guidelines state that the safety of automated external defibrillators (AEDs) in infants less than 1 year of age is unknown. ⋯ This case represents, to our knowledge, the youngest patient successfully defibrillated by an AED in a nonmedical setting. Although she received two shocks more than 11 J/kg each, she had no apparent myocardial damage at presentation.
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J. Cardiovasc. Electrophysiol. · Oct 2019
Comparative StudyComparison of high-power short-duration (HPSD) ablation of atrial fibrillation using a contact force-sensing catheter and conventional technique: Initial results.
Atrial fibrillation (AFib) ablation is alternative treatment to drugs. Literature suggests that use of contact force (CF) catheter with higher power for short periods is effective and safe. ⋯ HPSD was safe, useful, and efficient compared with CT, and reduced procedural time and total RF time. HPSD may reduce esophageal injury because of lower heating rate and it may reduce the recurrence of atrial tachyarrythmias.
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J. Cardiovasc. Electrophysiol. · Oct 2019
A prolonged QTc-interval at the emergency department: Should we always be prepared for the worst?
QTc-interval prolongation is associated with ventricular arrhythmias and mortality in a general population. Bazett's correction formula (QTcB) is routinely used despite its overcorrection at high heart rates. Recently, we proposed a patient-specific QT correcting algorithm (QTcA) resulting in improved rate correction and predictive value in a general population. We hypothesize risk stratification at the Emergency Department (ED) could be improved using QTcA. ⋯ QTcA reduced the number of patients considered at risk. Neither QTcB nor QTcA were predictors of in-hospital mortality. A severely prolonged QTcA was associated with cardiovascular events.