St Jude gets US nod to add V-V (ventricle to ventricle) timing in CRT-Ds (cardiac resynchronisation therapy devices):

The US FDA has given St Jude Medical approval to add V-V (ventricle to ventricle) timing to new models of its Epic HF and Atlas+ HF family of cardiac resynchronisation therapy devices (CRT-Ds). V-V timing refers to the delay between contraction of the left and right ventricles, compared with simultaneous pulses to both ventricles. St Jude's V-V timing allows physicians to adjust the delay between ventricular outputs, and choose which chamber is paced first. Patients who do not respond to simultaneous biventricular pacing systems may benefit from the sequential timing offered by V-V programmability, said the St Paul, Minnesota firm, which believes it is the first CRT-D supplier in the US to offer this expanded programmability.