Please assess the completion status of the following clinical trial:

Trial Title: Does Pulse-triggered VNS Autostimulation Increase VNS Efficacy

Study Design Characteristics:
- Allocation: None
- Intervention Model: None
- Observational Model: CASE_CROSSOVER
- Primary Purpose: None
- Time Perspective: PROSPECTIVE
- Masking: None
- Phase: None
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~* Subjects, 12 years of age or older, who have a VNS without ECG-triggered auto stimulation implanted, have a positive effect and have a device replacement with model 106 or model 1000 due to low battery capacity,.~* Subjects, who have 2 or more seizure per month and not more than 28 days between seizures during the baseline.~* Subjects, who are on a stable regiment of antiepileptic drug treatment for at least 3 month prior to enrollment and maintain on this regimen throughout the study.~* VNS parameters have not been changed I the last 3 month prior to enrollment.~* Subjects which are using an off time of at least 1.8 min. (If the patient is on a duty cycle involving an off-time of 1.1 min. or less, and willing to participate in the study the duty cycle will have to be changed to fulfill the inclusion criteria as follows. The off-time will be changed to 1.8 min. and the on-time accordingly to achieve about the same duty cycle as the patient had before. If the duty cycle is above 30% the parameters will be changed to 60 sec./1.8 min., if the duty cycle is between 30% and 23% the parameters will be change to 30 sec./1,8 min., if the duty cycle is 20% the parameters will be change to 21 sec./1,8 min. and if the duty cycle is 15% the parameters will be change to 14 sec./1,8 min. After at periode of 3 month observation the patient can be included in the study.)~* Either the subjects or the legal guardian are able to agree to participate by signing the informed consent form.~Exclusion Criteria:~* Subjects with rapidly progressive neurodegenerative or rapidly progressing neoplastic disease.~* Subjects or legal guardians who are unable to understand the study procedures.

- Gender: ALL
- Minimum Age: 12 Years
- Maximum Age: None
- Healthy Volunteers: None

Based on this trial design, predict the completion outcome and termination type (if applicable).