Telemetry in a CRT-D patient

This telemetry tracing was registered from a 43-year old patient with dilated cardiomyopathy implanted in 2009 with a CRT-D (BRAVA XT-D).

He is admitted to our departement because of symptomatic non-sustained ventricular tachycarrhythmias.

What is happening on this registration?

Physician advice: 
Non
Trace category: 
ECG
Device/Field: 
CRT