World's smallest, leadless heart pacemaker implanted

The smallest heart pacemaker available is about the size of a vitamin pill, and now another American hospital is about to test this emerging technology. “With this investigational device, the battery, the pacing electrodes, everything is in a little piece of metal sitting inside the heart. We believe that will eliminate a lot of risk for infection and complications,” said a cardiologist and principal investigator of the trial.

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