The efficacy of right ventricular pacing for symptomatic left mid-ventricular obstruction.

The serial changes in intraventricular pressure gradient in the left ventricle and NYHA functional classification in each case. Both the left intraventricular pressure gradient and symptoms improved after right ventricular pacing. In one case, the left intraventricular pressure gradient disappeared immediately after right ventricular pacing, while in the others it disappeared during the chronic phase, more than a year later.

Ventricular tachycardia arising from His-bundle.

During tachycardia, His-bundle potentials preceded Purkinje potentials. When the radiofrequency application was performed at a site where Purkinje potentials could be recorded slightly more peripherally than His-bundle potentials, tachycardia temporarily stopped, but was quickly followed by tachycardia with left-axis deviated because of the complication of the left anterior fascicular block.

Atrial fibrillation ablation in a patient complicated by persistent left superior vena cava and absent right superior vena cava.

A comparison between the three-dimensional contact mapping created by the Ensite system and that created by contrast-enhanced computed tomography angiography (CTA). Right atrial appendage was not well delineated on CTA.

Antidromic atrioventricular reentrant tachycardia in a patient with Wolff-Parkinson-White syndrome and unapparent preexcitation: A case report.

This is a case of antidromic AVRT in a patient with unapparent preexcitation, and we could successfully diagnose and treat with the careful interpretation of wide QRS tachycardia. We should keep in mind that differentiation between intermittent and unapparent preexcitation is difficult, and some patients with unapparent preexcitation have short refractory periods of those accessory pathways, leading to sudden death.

Incidence of side-effects of ticlopidine after sirolimus-eluting stent implantation.

Background: Because of its side-effects, long-term administration of ticlopidine limits the use of the sirolimus-eluting stent (SES) in Japan.

Methods And Results: Side-effects of ticlopidine occurred in 41 (9.3%) of 440 patients who underwent SES implantation.

123I-MIBG myocardial scintigraphy in patients with "takotsubo" cardiomyopathy.

Unlabelled: The clinical characteristics of reversible left ventricular dysfunction due to "takotsubo" cardiomyopathy have been described, but the origin of this condition remains unclear. This study investigated (123)I-metaiodobenzlguanidine ((123)I-MIBG) myocardial scintigraphy in patients with takotsubo cardiomyopathy.

Methods: Eight consecutive patients with takotsubo cardiomyopathy were studied.

Left ventricular rupture associated with Takotsubo cardiomyopathy.

A 70-year-old woman was admitted to the hospital with chest discomfort after quarreling with her neighbors. Electrocardiography revealed ST-segment elevation in leads I, II, III, aVL, aVF, and V2 through V6. Coronary angiography demonstrated normal arteries, but left ventriculography showed apical akinesis and basal hyperkinesis.

An atypical case of "Takotsubo cardiomyopathy" during alcohol withdrawal: abnormality in the transient left ventricular wall motion and a remarkable elevation in the ST segment.

A 64-year-old man was admitted due to hypokalemia-related myopathy. He was heavy drinker. He felt the stress of alcohol withdrawal during his hospitalization.

Reversible ventricular dysfunction (takotsubo cardiomyopathy) following polymorphic ventricular tachycardia.

A 67-year-old female with recurrent syncope and no obvious heart disease developed ventricular dysfunction, known as takotsubo cardiomyopathy, following a 90 s episode of polymorphic ventricular tachycardia originating from a ventricular extrasystole with a short coupling interval. Cardiac catheterization performed 30 min after the arrhythmic event revealed angiographically normal coronary arteries, and left ventricular apical akinesis and basal hyperkinesis. An intracoronary injection of acetylcholine revealed no inducible coronary spasm, and an electrophysiological study revealed normal atrioventricular conduction and no inducible ventricular arrhythmia.

Reversible left ventricular dysfunction "takotsubo" cardiomyopathy related to catecholamine cardiotoxicity.

An 80-year-old female was admitted for a persistent consciousness disturbance. Electrocardiography revealed ST-segment elevation in leads II, III, aVf, and V3-V6. Coronary angiography demonstrated normal arteries, while left ventriculography revealed asynergy of apical akinesis and basal hyperkinesis.