An experimental ablation therapy system that freezes heart tissue with a balloon catheter to treat a common heart rhythm disorder is far more effective than drug therapy, a study found Monday. Researchers compared the safety and efficacy of the Arctic Front CryoAblation Catheter System produced by US firm Medtronic to drug therapy over at least one year in 245 patients ...

Many Americans with leaky heart valves soon might be able to get them fixed without open-heart surgery. A study showed that a tiny clip implanted through an artery was safer and nearly as effective as surgery, doctors reported Sunday. The device is already on sale in ...

LONDON (Reuters) - A further $4.3 billion is needed if a global vaccines alliance is to meet its goal of supplying life-saving immunizations to millions of children in poor countries by 2015, the organization said on Monday. The GAVI Alliance (Global Alliance on Vaccines and Immunisation) said it had asked existing and potential donors to a meeting in The Hague ...