Optimal timing of antiviral therapy for patients with malignant tumor who presented with hepatitis B reactivation during chemotherapy and/or immunosuppressive therapy.

: Hepatitis B virus (HBV) reactivation may occur with chemotherapy and/or immunotherapy. Antiviral prophylaxis is recommended for all patients who are hepatitis B surface antigen (HBsAg)-positive during chemotherapy and/or immunosuppressive therapy. However, the optimal timing of antiviral therapy before chemotherapy and/or immunosuppressive therapy is not fully elucidated.

[Radiofrequency ablation of idiopathic right ventricular tachycardia].

Objective: To study the effect of electrophysiological characterization and radiofrequency ablation on idiopathic right ventricular tachycardia.

Methods: Five patients ( 3 male and 2 female ) with an average age of 35.2+/-11.