71.   It indicated an irregular heart beat, confirming that inserting the implantable cardioverter defibrillator, or ICD, was prudent.

72.   It is a cardiac pacing device that also includes a defibrillator used to stabilize an irregular heart beat.

73.   It was detection of the fast heart beat that prompted doctors to recommend the cardiac control device.

74.   Its symptoms include rapid heart beat, nervousness, weakness, heat intolerance and weight loss.

75.   Later, Tsibliyev suffered an irregular heart beat, which prevented him from making spacewalks for repairs.

76.   Medical workers called to the scene discovered Mrs. Li had low blood pressure and a rapid heart beat brought on by diabetes.

77.   Mother Teresa hospitalized with irregular heart beat.

78.   Mother Teresa was hospitalized with an irregular heart beat Friday, but her doctor said she was in stable condition.

79.   On Wednesday last week, he received shock treatment to regulate his heart beat.

80.   Recent studies have shown that the ICDs can prevent cardiac disaster by preventing the lethal, sustained irregular heart beat.