The FDA has approved Medtronic and it is making two Performa left ventricular quadripolar leads available for use with Viva Quad XT and Viva Quad S cardiac resynchronization therapy defibrillators (CRT-D). The leads now offer more options for placement dur to the newly approved S and straight shaped devices in addition to the previously approved Dual Cant Model 4298 being available. The leads allow for sixteen different pacing configurations with their four electrodes.
Accommodation of various anatomies without compromising lead handling or stability is the reason for the three Attain Performa lead shapes -Dual Cant Model 4298, Straight Model 4398 and S-Shape Model 4598. With 16 pacing configurations and shorter spacing between the two center electrodes, the quadripolar leads have been shown to reduce the incidence of phrenic nerve stimulation (PNS), which is a potential issue associated with CRT therapy that results in muscle twitching, hiccups or shortness of breath. Greater device longevity and reduce the likelihood of PNS is possible as Attain Performa leads also include steroid elution on all four electrodes for lower chronic pacing thresholds.