Second mRNA Vaccination of COVID-19 in a Patient Who Developed Pericarditis after the First Vaccination.

The coronavirus infection 2019 (COVID-19) pandemic has led to the development of mRNA vaccines with proven efficacy. However, it remains unclear whether patients who developed pericarditis after the first COVID-19 mRNA would be fit to receive the second vaccination. Herein, we present the case of a 64-year-old man who visited our emergency department with substernal chest discomfort that began 4 days after his first mRNA COVID-19 vaccination.

Frequency and predictors of bleeding complications associated with anti-coagulant therapy using dabigatran in Japanese patients with atrial fibrillation.

Background: Few data exist regarding frequency and predictors of bleeding complications associated with anticoagulant therapy using dabigatran in Japanese patients with atrial fibrillation (AF).

Methods And Results: We retrospectively studied 184 patients with AF who were administered dabigatran from April 2011 to August 2012 in our institution. Twenty-eight patients (15%) developed some type of bleeding complication.