AtriCure, Inc. provided revenue guidance for the fourth quarter and full year of 2013. Preliminary revenue for the fourth quarter of 2013 is expected to be approximately $21.9 million, reflecting growth of approximately 19% over the fourth quarter of 2012. Based on this preliminary estimate, revenue from U.S. customers is expected to be $16.4 million, reflecting growth of 20%, and revenue from international customers is expected to be $5.5 million, reflecting growth of 17%, or 14% on a constant currency basis.

Preliminary revenue for full year 2013 is expected to be $81.9 million, reflecting year over year growth of 17% over full year 2012.

The company provided earnings guidance for the full year of 2014. Management projects that 2014 revenue will be in the range of $100 million to $103 million, which represents an increase of 22% to 26% over 2013. Organic revenue growth is expected to be approximately 13% - 15% with the remaining portion expected from the recently acquired Estech ablation and valve products. Adjusted EBITDA, a non-GAAP measure, is projected to be a loss in the range of $9 to $10 million for 2014, of which approximately $3.5 million will be transaction related expenses.