Please assess the completion status of the following clinical trial:

Trial Title: Electrophysiologically Guided PAcing Site Selection Study

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: PREVENTION
- Time Perspective: None
- Masking: SINGLE
- Phase: PHASE4
- Number of Arms: 4.0

Eligibility Criteria:
Inclusion Criteria:~* Symptomatic sinus node dysfunction~* More than 18 years old~* Signed informed consent~Exclusion Criteria:~* Less than 18 years old~* Pregnancy~* Anamnestic transient ischemic attack (TIA) or stroke~* Neoplastic or any other severe disease reducing life expectancy~* Heart surgery in the last 3 months~* Left atrial diameter \> 55mm, determined in the parasternal long-axis view (during either sinus rhythm or atrial fibrillation)~* Participation in other studies

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- 1. IAS pacing - study group (Type: EXPERIMENTAL): Patients were first submitted to electrophysiological study to assess Delta CTos \> or \< 50 ms. Then they were randomized to interatrial septum pacing od right atrial appendage. This arm (1) includes patients with Delta CTos \>50 ms and randomized IAS pacing.~IAS Pacing -Study Group: Patients with Delta CTos \>50 ms (study group) at the electrophysiologic study and randomized Interatrial Septum Pacing
- 2. IAS pacing-control group (Type: EXPERIMENTAL): (Delta CTos\<50ms)~Patients were first submitted to electrophysiological study to assess Delta CTos \> or \< 50 ms. Then they were randomized to interatrial septum pacing od right atrial appendage. This arm (2) includes patients with Delta CTos \<50 ms and randomized IAS pacing.~IAS Pacing -Control Group: Patients with Delta CTos \<50 ms (control group) at the electrophysiologic study and randomized Interatrial Septum Pacing
- 3. RAA Pacing - study group (Type: ACTIVE_COMPARATOR): Patients were first submitted to electrophysiological study to assess Delta CTos \> or \< 50 ms. Then they were randomized to interatrial septum pacing od right atrial appendage. This arm (3) includes patients with Delta CTos \>50 ms and randomized Right Atrial Appendage pacing.~RAA Pacing -Study Group: Patients with Delta CTos \>50 ms (study group) at the electrophysiologic study and randomized Right Atrial Appendage pacing
- 4. RAA Pacing - control group (Type: ACTIVE_COMPARATOR): Patients were first submitted to electrophysiological study to assess Delta CTos \> or \< 50 ms. Then they were randomized to interatrial septum pacing od right atrial appendage. This arm (4) includes patients with Delta CTos \<50 ms and randomized Right Atrial Appendage pacing.~RAA Pacing -Control Group: Patients with Delta CTos \<50 ms (control group) at the electrophysiologic study and randomized Right Atrial Appendage pacing

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