Fig 5 -

(A) QRS width; (B) Max. LV delay depending on the amount of QRS shortening by tLVp with regard to intrinsic QRS complex (BiV–biventricular pacing, LV—left ventricle, tLVp—triggered left ventricular pacing); n = 9 for ≤20ms, n = 8 for >20ms.</p

Fig 1 -

Electrogram (EGM) and electrocardiogram (ECG) of the three different settings: 1. optimized bi-ventricular-stimulation (BiV); 2. Physiological AV nodal conduction without triggered left ventricular pacing (tLVp-off); 3. TLVp algorithm turned on (tLVp-on) with physiological AV nodal conduction (a), and after premature ventricular contraction (PVC; b). (ECG–electrocardiogram, IEGM–internal electrogram, PVC—premature ventricular contraction, tLVp—triggered left ventricular pacing).</p

QRS width (ecg) in the different CRT modes.

(BiV–biventricular pacing, LV—left ventricle, tLVp—triggered left ventricular pacing).</p

Electrocardiographic and echocardiographic markers depending on the amount of QRS shortening by tLVp with regard to intrinsic QRS complex.

Electrocardiographic and echocardiographic markers depending on the amount of QRS shortening by tLVp with regard to intrinsic QRS complex.</p

Echocardiographic (echo) markers in the different CRT modes.

(A) 3D LVEF (echo); (B) Systolic dyssynchrony index (SDI; echo). (3D - 3-dimensional, BiV–biventricular pacing, LV—left ventricle, LVEF–left ventricular ejection fraction, tLVp—triggered left ventricular pacing).</p

Patient characteristics (n = 17).

Patient characteristics (n = 17).</p

LV delay, measured by 2D strain (echo) in the different CRT modes.

Max. (BiV–biventricular pacing, LV—left ventricle, LVEF–left ventricular ejection fraction, tLVp—triggered left ventricular pacing).</p

Fig 2 -

Sankey plot showing the number of eligible vectors before and after LVAD implantation using the ECG-based (A) and the device-based (B) S-ICD screening test. LVAD = left ventricular assist device.</p

Comparison of recorded parameters between patients eligible and ineligible for S-ICD implantation after implantation of left ventricular assist device.

Comparison of recorded parameters between patients eligible and ineligible for S-ICD implantation after implantation of left ventricular assist device.</p

Number of patients found eligible for S-ICD implantation before and after LVAD implantation using the ECG-based screening test and the device-based screening test, respectively.

LVAD = left ventricular assist device; S-ICD = subcutaneous implantable cardioverter-defibrillator; * = p < 0.05, ns = not significant.</p