INTRODUCTION Atrial premature contractions (APCs) are commonly encountered in clinical practice. The APCs may influence heart conduction system and induce other arrhythmia. The disorder of atrioventricular conduction is related to electrophysiological phenomena, difficult to understand and diagnose. CASE REPORT We presented a 15-year-old male patient whose baseline electrocardiogram (ECG) was...

At the turn of the century, a spate of randomized, controlled trials (RCTs) compared the 2 main pharmacological options for rhythm management for atrial fibrillation (AF): repeated attempts to restore and maintain sinus rhythm (rhythm control) and controlling the heart rate without any specific attempts to restore and maintain sinus rhythm (rate control) (1). Largely driven by results of the 2 ...

In pulmonary stenosis with normal aortic root, sinus rhythm is the rule and atrial fibrillation appears to be rare (Abrahams and Wood, 1951; Campbell, 1954; Donzelot and D'Allaines, 1954; Kjellberg et al., 1955). The following case is considered to be of interest because the presence of this arrhythmia resulted in a clinical picture differing in several respects from that of pulmonary stenosis ...

Atrial fibrillation (AF) is a common arrhythmia that occurs in paroxysmal and persistent forms. It occurs in varied situations but lightning induced AF is extremely rare. Here is a case which reverted to sinus rhythm spontaneously. This 37-year-old man without any underlying heart disease had new onset AF after being struck by a lightning. Oral Metoprolol alone was given to control ventricular ...

Your patient with atrial fibrillation (AF) is hemodynamically stable and you have successfully established rate control. Your next step is to weigh the risks and benefits of attempting to restore sinus rhythm. In up to one half of patients, AF of recent onset converts spontaneously to normal sinus rhythm within 24 hours. Thus, in some cases, the most appropriate approach may be to control the v...

This study describes the prevalence of cardiac dysrhythmias occurring over a single 24 h period in ponies and compares the heart rate and frequency of dysrhythmias in two groups of ponies of different ages. Electrocardiograms were recorded using a Holter monitoring system from twenty four ponies aged less than 15-year-old (n = 14) and greater than 15-year-old (n = 10). Subsequent analyses of ca...

Background The occurrence of peri-operative AF after abdominal surgery is a clinical condition burdened by several complications, especially in the elderly [1-3]. When AF is successfully converted to sinus rhythm, it is unlikely to recur, and nearly all of these patients are discharged from the hospital in sinus rhythm. It is not clear how soon these patients may discontinue antiarrhythmic ther...

OBJECTIVES The effectiveness of oral quinidine for conversion of atrial fibrillation to sinus rhythm was evaluated in 49 patients with persistent atrial fibrillation on anticoagulation therapy. Atrial fibrillation was considered as persistent when the duration was longer than 3 days but less than 6 months. METHODS Patients received orally one to 7 doses of 150 mg hydroquinidine hydrochloride ...

OBJECTIVE To evaluate the results of intraoperative radiofrequency ablation with biatrial procedure in the treatment of chronic atrial fibrillation in patients with associated cardiac disease. METHODS Between February 2008 and May 2009, 15 consecutive patients were underwent mitral valve procedure plus modified radiofrequency biatrial ablation of chronic atrial fibrillation. The mean age was ...

We employ surrogate data techniques and a new correlation dimension estimation algorithm, the Gaussian kernel algorithm, to uncover non-linearity in human electrocardiogram recordings during normal (sinus) rhythm, ventricular tachycardia (VT) and ventricular fibrillation (VF). We conclude that all three rhythms are not linear (i.e. distinct from a monotonic non-linear transformation of linearly...