Focused placement of the left ventricular lead didn’t enhance outcomes in sufferers with coronary heart failure present process cardiac resynchronization remedy, in line with outcomes introduced in a Scorching Line session at this time at ESC Congress 2026 and printed concurrently in The Lancet.
Cardiac resynchronization remedy (CRT) is a sort of pacemaker remedy for some folks with coronary heart failure who’ve conduction abnormalities akin to left bundle department block (LBBB). It sends rigorously timed electrical indicators to the guts in order that the guts’s decrease chambers beat collectively extra successfully.
“Whereas CRT improves signs, high quality of life and survival in majority of sufferers, as much as one-third don’t expertise any profit,” defined Principal Investigator of the DANISH-CRT trial, Professor Jens Cosedis Nielsen from Aarhus College Hospital, Denmark. “Observational knowledge have proven that measuring a late electrical sign from the left ventricular lead is related to higher outcomes. Nevertheless, whether or not a method of concentrating on placement of the left ventricular lead on the newest activated website improves outcomes has by no means been investigated in a big randomized managed trial,” he famous.
The DANISH-CRT trial was an investigator-initiated, double-blind trial performed in all 5 Danish college facilities performing CRT gadget implantations. The trial included 1,000 sufferers who had coronary heart failure and LBBB on guideline-directed remedy and had been referred for biventricular pacing. Sufferers had been randomised to left ventricular lead placement focused to the positioning of newest electrical activation throughout the coronary sinus branches or to plain lead placement (within the posterolateral, non-apical coronary sinus).
After a median of 45.8 months of follow-up, the first endpoint of demise or first unplanned hospitalization for coronary heart failure occurred in related proportions of sufferers with focused lead placement and customary lead placement (27.9% vs. 25.5%; hazard ratio 1.10; 95% confidence interval 0.86 to 1.39; p=0.45). Persistently related findings had been noticed throughout secondary endpoints together with structural modifications to the left ventricle, high quality of life, useful standing and bodily capability, in addition to in subgroup analyses of the first endpoint. Numerically, extra lead-related issues had been noticed within the focused lead placement group.
Our findings don’t assist routine electrical mapping to focus on left ventricular lead placement in up to date CRT observe. We are going to proceed to research knowledge from the DANISH-CRT trial to analyze which affected person subgroups benefitted most from CRT.”
Professor Jens Cosedis Nielsen, Aarhus College Hospital, Denmark
