Cardiology

Your Article Summary

See Latest Articles

ECG manifestations of left atrial flutter
Current Opinion in Cardiology, 01/09/09

Shah D et al. – Accurate activation mapping data of the full spectrum of left atrial reentry will facilitate development of clinically useful ECG algorithms.

• Review of studies of the pathophysiology of arrhythmias originating from the left atrium

• Nonreentrant arrhythmias originating from the left atrium are characterized by specific ECG features of the P wave, primarily a positive or dominantly positive deflection in V1
• Bystander activation of the right atrium generates a dominantly positive deflection in V1 even during left atrial reentry
• Part of the reentry circuit may generate feeble electrical forces (eg, thin strand of myocardium) instead of continuous electrical activity on surface ECG due to continuous reentrant activation
• Discrete P waves separated by a 12-lead synchronous isoelectric interval may be produced
• P wave morphology can be used to infer the exit location from this slow-conducting isthmus and facilitate ablation

Today in Arrhythmias/EP...keeping you current

Receive free subspecialty "5-minute updates" via email

Catheter ablation vs. amiodarone plus losartan for prevention of atrial fibrillation recurrence in patients with paroxysmal atrial fibrillation
European Journal of Clinical Investigation, 06/01/09

Valsartan for Prevention of Recurrent Atrial Fibrillation
New England Journal of Medicine, 04/16/09

Amiodarone for Pediatric Resuscitation: A Word of Caution
Pediatric Cardiology, 06/12/09

See All of Arrhythmias/EP