During the past 28 months, 16 cases of WPW syndrome were operated on at Hiroshima University Hospital. Two cases were complicated by other cardiac disorders which accelerated tachycardia, making diagnosis difficult. One of these cases showed serious mitral regurgitation, due to infective endocarditis and the patient suffered cardiac failure accompanied by paroxysmal tachycardia not responsive t...

A 65 year old man developed atrial arrhythmias secondary to a congestive cardiomyopathy which were resistant to quinidine and disopyramide. Amiodarone controlled the paroxysmal atrial tachycardia but 4 months after starting the drug he developed increasing dyspnoea and radiological changes highly suggestive of metastatic lung disease. Lung biopsy showed change of drug-induced pneumonitis and 4 ...

Anasarca or massive edema of the newborn (hydrops fetalis) and atrial tachy-arrhythmias are frequently seen intheneonatalperiod;however, an association between the two is not well recognized. This paper reports three infants less than one week of age who demonstrated such an association. We have also reviewed the literature of paroxysmal supraventricular tachycardia (PST) and atrial flutter (AF...

INTRODUCTION No prior studies have systematically investigated the diagnostic value of cycle length (CL) variability in differentiating the mechanism of paroxysmal supraventricular tachycardia (PSVT). METHODS AND RESULTS We studied 173 consecutive patients with PSVT; 86 typical atrioventricular nodal reentrant tachycardia (AVNRT), 11 atypical AVNRT, 47 orthodromic reciprocating tachycardia (O...

PAROXYSMAL atrial tachyeardia with atrioventricular block (PAT with block) has been recognized more often in recent years since Lown and Levine clarified its diagnostic criteria and emphasized its important relation to digitalis excess.1' 2 The present report was prompted by the increasing frequency with which this diagnosis has been made at our hospital and its common association with chronic ...

THE digitalis drugs can produce nearly everv form of disturbed heart rhythmi. Thus far elinical attention has been directed to the venitricular effects. Digitalis-induced ventricular arrhythmias are therefore clearly catalogued and are recognized as of potentially grave signifieance. Recent studies indicate that certaiin atrial disorders are also imaniifestations of serious digitalis poisoning....

The era of catheter ablation for the treatment of arrhythmias began in 1981, when Dr. Melvin Scheinman performed the first atrioventricular junction ablation using direct-current shocks in a patient with drug-refractory atrial fibrillation and an uncontrolled ventricular rate.1 Because of the barotrauma associated with intracardiac high-energy shocks, direct-current catheter ablation played onl...

In case 1, a 71-year-old man with a history of coronary artery disease presented with recurrent paroxysmal supraventricular tachycardia (SVT) despite treatment with -blockers. During electrophysiology study, the baseline sinus cycle length was 895 ms, atrial-His (AH) interval was 120 ms, and His-ventricular interval was 60 ms. A narrow complex SVT with tachycardia cycle length of 480 ms was ini...

Atrial overdrive pacing algorithms have been partially effective in controlling atrial fibrillation (AF). A 76-year-old man with history of a cardiomyopathy and paroxysmal AF underwent implant of a dual-chamber ICD. After enabling preferential pacing (PP) algorithms, marked control of his AF was demonstrated, but with inappropriate ICD shocks secondary to a typical AV nodal re-entrant tachycard...