Looking at revenue growth geographically, compared to last year, first quarter net sales in the U.S. increased 2%, while internationally, we grew an impressive 11%. In Europe, we were up 6% on a constant-currency basis. Japan had a particularly strong quarter, growing 19%, which included some benefit from a competitor's quality issue in stents that John Weiland will address a little later. Our other international businesses grew 15% in constant currency, driven by a 29% growth in our emerging markets.
On the business development front, we don't have any new deals coming up at this time, but I can tell you that the transactions we closed in the fourth quarter last year are proceeding as planned. We told you that we had expected ClearStream and Medivance together to contribute about 200 basis points of growth this year, and that was their impact on the first quarter. Later, you'll hear John DeFord's update at the LEVANT 2 trial from the Lutonix acquisition continues its rapid enrollment and is going according to our plans.
So in summary, I'd characterize the first quarter as a good start to the year. While we still haven't seen much change in the U.S. environment, our increased focused in investments in international markets are providing rapid returns and strengthening our growth profile. We remain focused on daily execution of our product leadership strategy to take advantage of the opportunities in front of us while positioning ourselves for stronger growth in the future.
Before I turn the call over to John Weiland, I wanted to give you an update on the Gore litigation. As most of you know, on February 10, the Court of Appeals for the Federal Circuit affirmed the District Court's decision in our favor. Gore has since filed a petition requesting a rehearing of the case, so we're currently waiting to find out if there will be further hearings or not. In the meantime, we're in the process of evaluating alternatives for the use of these potential funds in the best interest of shareholders.
Select the service that is right for you!COMPARE ALL SERVICES
Jim Cramer and Stephanie Link actively manage a real portfolio and reveal their money management tactics while giving advanced notice before every trade.
- $2.5+ million portfolio
- Large-cap and dividend focus
- Intraday trade alerts from Cramer
- Weekly roundups
Access the tool that DOMINATES the Russell 2000 and the S&P 500.
- Buy, hold, or sell recommendations for over 4,300 stocks
- Unlimited research reports on your favorite stocks
- A custom stock screener
- Upgrade/downgrade alerts
Jim Cramer's protege, David Peltier, identifies the best of breed dividend stocks that will pay a reliable AND significant income stream.
- Diversified model portfolio of dividend stocks
- Alerts when market news affect the portfolio
- Bi-weekly updates with exact steps to take - BUY, HOLD, SELL
All of Real Money, plus 15 more of Wall Street's sharpest minds delivering actionable trading ideas, a comprehensive look at the market, and fundamental and technical analysis.
- Real Money + Doug Kass Plus 15 more Wall Street Pros
- Intraday commentary & news
- Ultra-actionable trading ideas
Our options trading pros provide daily market commentary and over 100 monthly option trading ideas and strategies to help you become a well-seasoned trader.
- 100+ monthly options trading ideas
- Actionable options commentary & news
- Real-time trading community
- Options TV