Assessment of Pacing Stimulus Conduction and Latency Measurements in CRT-D Patients

Assessment of Pacing Stimulus Conduction and Latency Measurements in CRT-D Patients

The study is designed to collect data on LV latency in CRT-D patients by the CRT-D and compare measurements to 12-lead ECG data

Inclusion Criteria:

• Patient has been implanted with a CRT-D device by BIOTRONIK at least 4 weeks before enrollment date
• Patient successfully implanted with a left ventricular lead
• High likelihood of LV latency ≥ 40 ms
• LV lead in lateral or postero-lateral position in the coronary venous system
• Patient is able to understand the nature of the clinical investigation
• Patient is willing to undergo the required measurements at the investigation site
• Patient provides written informed consent
• Age ≥ 18 years

Exclusion Criteria:

• Patients with irregular ventricular rhythm due to atrial tachycardia
• Pregnant or breast-feeding women
• Participation in an interventional clinical investigation