51.   Many patients immediately undergo angioplasty, which uses tiny balloons to squeeze open clogged arteries in the heart.

52.   Mother Teresa underwent an angioplasty last week to remove blockages in two major arteries.

53.   Mother Teresa underwent angioplasty last week to remove blockages in two major arteries.

54.   Mother Teresa has undergone two angioplasties in the past.

55.   On Friday and for the second time this year, Lee underwent balloon angioplasty, which does not involve open-heart surgery.

56.   She underwent an angioplasty to remove blockages from two arteries late last year after a mild heart attack.

57.   She underwent an angioplasty to remove blockages in two arteries late last year after she had a mild heart attack.

58.   She underwent an angioplasty to remove blockages from arteries last year after a mild heart attack.

59.   Stents are tiny scaffolds that prop open arteries after a patient undergoes balloon angioplasty to unclog arteries.

60.   The study found the death rate among people who had suffered heart attacks climbed the longer the time between entering the hospital and undergoing angioplasty.