31.   The blockage recurred, and he had single-artery bypass surgery.

32.   The difference is that, with a so-called lap band, patients get good weight loss but with generally fewer complications than with gastric bypass surgery.

33.   The drug is being tested as an alternative to bypass surgery for treating blocked arteries in the heart and limbs.

34.   The most recent departure raises the issue of who eventually will replace Eisner, who had heart bypass surgery two years ago.

35.   Therapy that has the potential to delay the need for angioplasty or bypass surgery would be very lucrative.

36.   These days Cook is recovering from heart bypass surgery in January.

37.   Yeltsin had quintuple heart bypass surgery in the autumn of last year and has been traveling frequently in the past two months, visiting Siberia, China and Sweden.

38.   Yeltsin had heart bypass surgery two years ago and has been hospitalized five times since then, most recently because of pneumonia.

39.   Yeltsin had quintuple heart bypass surgery three years ago, and has repeatedly been hospitalized for pneumonia and other illnesses.

40.   People who had bypass surgery within two weeks of being hospitalized were twice as likely to have a stroke as those who had later bypasses.