Cavotricuspid isthmus conduction split by pouch-like recesses during typical atrial flutter.

A 58-year-old man had typical cavotricuspid-isthmus-dependent atrial flutter (AFL). Right atrial angiography and multidetector computed tomography revealed a deep pouch-like recess in the mid-isthmus region. Linear ablation from the pouch to the edge of the inferior vena cava resulted in widely split double potentials without any change in the AFL cycle length.

Catheter ablation of tachycardias after undergoing a surgical atriotomy using a multipolar electrode catheter: conventional mapping method without an electroanatomical mapping system.

Background: A variety of supraventricular tachyarrhythmias may occur in patients after undergoing a surgical atriotomy. The purpose of this study was to characterize them and determine the role of conventional mapping.

Methods And Results: In 45 patients after a surgical atriotomy, 68 atrial tachyarrhythmias were observed.

[Post-myocardial infarction ventricular aneurysm and intractable ventricular tachycardia supported by left ventricular assist device: a case report].

A 57-year-old man was admitted under a diagnosis of myocardial infarction. Cardiac catheterization revealed total occlusions of the right coronary artery and the left anterior descending artery, and ventriculography showed aneurysmal change in the anterior and septal segments. Circulatory support was introduced with intraaortic balloon pumping, but intractable ventricular tachycardia developed.

Enhancement of J-ST-segment elevation by the glucose and insulin test in Brugada syndrome.

The effects of glucose and insulin on J-ST-segment elevation were evaluated in seven men (mean age 45 +/- 10 years) with Brugada syndrome. Six patients had been reanimated from VF and one patient had experienced syncope. The effects of intavenous (1) pilsicainide 50 mg, (2) glucose 50 g, and (3) glucose 50 g plus regular insulin 10 IU on the precordial ECG leads were examined.