Please assess the completion status of the following clinical trial:

Trial Title: Study on the Efficacy of Phenytoin in the Prophylaxis of Seizures of Patients With Pneumococcal Meningitis at Least 50 Yrs Old.

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: PREVENTION
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: PHASE4
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~Adult patients \> or = 50 years old.~Diagnosed of pneumococcal meningitis due to clinical characteristics plus a positive CSF Gram stain and/or a detection of pneumococcal antigen or PCR~or~Suspected pneumococcal meningitis since it is an episode related to otitis, pneumonia, sinusitis or pericranial fistula or in patients with known risk factors such as myeloma or splenectomy.~Exclusion Criteria:~To have seizures prior to arrive to the hospital or the inclusion in the study.~Pregnancy or breastfeeding.~To have conduction abnormalities in ECG.~History of allergy or intolerance to phenytoin.~Patients with meningitis as a complication of neurosurgical procedures.~Epileptic patients taking usually anticonvulsivants.~Refusal by the patient or family to participate and/or to sign the informed consent.

- Gender: ALL
- Minimum Age: 50 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- phenytoin prophylaxis (Type: EXPERIMENTAL): Patients with suspected or proven pneumococcal meningitis are allocated to receive phenytoin prophylaxis or placebo to avoid seizures during the 10 days of antibiotic therapy starting after the antibiotic therapy
- placebo (Type: PLACEBO_COMPARATOR): placebo vials and pills labeled as phenytoin prophylaxis vials and pills

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