Neurostimulation effects on cycle length prolongation using the combined electrostimulation/guiding catheter or the permanent screw-in lead
| Stimulation frequency (Hz) | 10 | 20 | 30 | 40 | 50 |
| Guiding catheter | 1.3 ± 0.3 | 1.6 ± 0.4 | 1.8 ± 0.8 | 1.9 ± 0.8 | 2.0 ± 0.8 |
| Screw-in electrode | 4.3 ± 0.6 | 5.2 ± 0.5 | 6.1 ± 0.7 | 6.1 ± 0.7 | 6.5 ± 1.2 |
| Stimulation frequency (Hz) | 10 | 20 | 30 | 40 | 50 |
| Guiding catheter | 1.3 ± 0.3 | 1.6 ± 0.4 | 1.8 ± 0.8 | 1.9 ± 0.8 | 2.0 ± 0.8 |
| Screw-in electrode | 4.3 ± 0.6 | 5.2 ± 0.5 | 6.1 ± 0.7 | 6.1 ± 0.7 | 6.5 ± 1.2 |
The PS effects on CL prolongation are depicted as CL during PS/CL before PS (CL PS /CL). For each frequency, the CL PS /CL prolongation during stimulation via the custom-made delivery sheath is compared with stimulation via the permanent lead, which was screwed in at the same location after advancement through the sheath. A three-fold increase in the negative dromotropic effect was obtained using the delivery sheath compared with the implanted electrode ( P < 0.01 for all frequencies, impulse duration: 2 ms). The degree of rate slowing increased with increasing stimulation frequency using both devices.
Neurostimulation effects on cycle length prolongation using the combined electrostimulation/guiding catheter or the permanent screw-in lead
| Stimulation frequency (Hz) | 10 | 20 | 30 | 40 | 50 |
| Guiding catheter | 1.3 ± 0.3 | 1.6 ± 0.4 | 1.8 ± 0.8 | 1.9 ± 0.8 | 2.0 ± 0.8 |
| Screw-in electrode | 4.3 ± 0.6 | 5.2 ± 0.5 | 6.1 ± 0.7 | 6.1 ± 0.7 | 6.5 ± 1.2 |
| Stimulation frequency (Hz) | 10 | 20 | 30 | 40 | 50 |
| Guiding catheter | 1.3 ± 0.3 | 1.6 ± 0.4 | 1.8 ± 0.8 | 1.9 ± 0.8 | 2.0 ± 0.8 |
| Screw-in electrode | 4.3 ± 0.6 | 5.2 ± 0.5 | 6.1 ± 0.7 | 6.1 ± 0.7 | 6.5 ± 1.2 |
The PS effects on CL prolongation are depicted as CL during PS/CL before PS (CL PS /CL). For each frequency, the CL PS /CL prolongation during stimulation via the custom-made delivery sheath is compared with stimulation via the permanent lead, which was screwed in at the same location after advancement through the sheath. A three-fold increase in the negative dromotropic effect was obtained using the delivery sheath compared with the implanted electrode ( P < 0.01 for all frequencies, impulse duration: 2 ms). The degree of rate slowing increased with increasing stimulation frequency using both devices.
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