A case of aortic valve laceration after balloon aortic valvuloplasty with morphological features.

A 71-year-old man suffered from congestive heart failure due to severe aortic stenosis. We performed balloon aortic valvuloplasty (BAV) as a bridge to transcatheter aortic valve replacement using transesophageal echocardiogram (TEE) by the retrograde approach. Balloon dilatation was carefully performed using an 18 mm balloon.

Effective treatment of congestive heart failure using adaptive servo-ventilation in an end-stage renal disease patient on hemodialysis.

A 61-year-old man who was being treated with hemodialysis (HD) for end-stage renal disease presented with symptoms of severe congestive heart failure (CHF). Removing excess intravascular fluid during HD was difficult due to the patient's chronic hypotension induced by severe left ventricular (LV) dysfunction. The application of adaptive servo-ventilation (ASV) increased the patient's cardiac output and blood pressure during HD, thus resulting in the effective removal of excess intravascular fluid.

Ventricular tachycardia originating from a heart-shaped idiopathic left ventricular aneurysm diagnosed on a three-dimensional electroanatomical mapping system integrated with CT imaging.

Idiopathic left ventricular aneurysms and diverticula (LVA/Ds) are rare cardiac malformations that can be detected using certain imaging techniques. Although most patients with these malformations are clinically asymptomatic, some patients exhibit cardiac arrhythmias and other clinical manifestations. In electrophysiological studies, it is often difficult to establish the relationship between clinical manifestations of cardiac arrhythmias and those of LVA/Ds due to anatomical complexities.

Efficacy of linear block at the left atrial roof in atrial fibrillation.

Background: After extensive encircling of ipsilateral pulmonary vein isolation (EEPVI) for atrial fibrillation (AF), we sometimes observe AF recurrence, or the occurrence of atrial tachycardia originating from the left atrium. This study examined the efficacy of additional linear ablation at the left atrial (LA) roof in combination with EEPVI to prevent arrhythmia recurrences.

Methods: This study included 104 patients with drug-refractory AF (75 with paroxysmal, 29 with persistent).

Molecular diagnosis of prosthetic valve endocarditis with aorto-right atrial fistula.

Definite diagnosis of infective endocarditis is impossible when all blood cultures are negative under antibiotic treatment. In this case, Streptococcus canis was identified using polymerase chain reaction from preoperative whole blood and excised valve tissue, and considered as the pathogen for infective endocarditis, despite negative blood cultures. This information was useful for diagnosis and selection of antibiotics.