1.   After a week in intensive care, doctors opted to implant the pacemaker.

2.   He had the pacemaker implanted to address congestive heart failure.

3.   If they must be used, care should be taken to avoid placing them over the area where the pacemaker has been implanted.

4.   Implanting a pacemaker no longer requires the chest surgery that he underwent.

5.   In implanting a pacemaker, an insulated wire from the device is threaded through a vein into a heart chamber.

6.   In November, when his heart appeared to be failing, Williams underwent surgery to have a pacemaker implanted.

7.   She had a pacemaker implanted only a few weeks ago, but she was determined to make at least part of the march.

8.   Some women prefer the pacemaker to be implanted beneath the breast against the rib cage, although such placement can interfere with mammograms.

9.   Stronger wires now enable most pacemakers to be implanted beneath the skin below the collar bone.

10.   The researchers also had patients hold the phones in various positions, including directly over the chest where the pacemaker was implanted.