The world’s smallest pacemaker has gone through its global trial and has been found to be successful in almost all of the participants. 

The minimally invasive, Micra Transcatheter Pacing System (TPS), was successfully implanted in 99.2 percent of those testing the vitamin-sized unit.

In the trial 96% of patients did not experience any kind of major complication, a 51% drop in what is usually seen in traditional pacemaker users.

"We are extremely pleased with the remarkably successful implant rates and safety profile of the Micra pacemaker, including the absence of device dislodgement," said principal investigator of the trial Dwight Reynolds, from the University of Oklahoma Health Sciences Centre.

The new pacemaker is less than one-tenth of the size of a traditional pacemaker, and can be directly implanted into the heart using a catheter, removing the invasive incision of a traditional pacemaker.

"By not creating a pocket and implanting a rigid device directly below the skin, it eliminates another potential source of complications and any visible sign of the device," said one of the team, Mikhael El Chami from Emory University.

The Micra does not have any wires used by traditional pacemakers that connect to the heart but instead, the flexible tines attach to the right ventricle that send electrical pulses whenever it detects an abnormal rhythms, this reduces the chance vein injury.

"We were pleased to participate in this important trial, as this will likely be the way pacemakers are implanted in the future," said Michael S. Lloyd, from Emory.

"The outstanding results are very encouraging and will allow us to continue to offer this novel device as a safe alternative to our patients."

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