Please assess the completion status of the following clinical trial:

Trial Title: Dual Versus Single Shock for Cardioversion of Atrial Fibrillation

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

Eligibility Criteria:
Inclusion Criteria:~* Outpatient or inpatients with atrial fibrillation sent for elective direct current cardioversion (DCCV) with at least 1 of the following risk factors will be included:~  * BMI \>30~ * History of Chronic Obstructive Pulmonary Disease/emphysema/asthma~ * Significant Valvular heart disease (at least moderate regurgitation/stenosis)~ * History of Heart Failure with preserved Ejection Fraction/Heart Failure with reduced Ejection Fraction~ * Cardiomyopathy with ejection fraction \<40%~ * Left atrium anterior-posterio (AP) dimension \>4.5cm~ * Presence of Left ventricular hypertrophy (≥1.1cm septal/posterior wall M-mode) on transthoracic echocardiogram~ * History of sleep apnea~Exclusion Criteria:~* Consent not obtained~* \<18 y.o.~* \>80 y.o.~* Not adequately anti-coagulated~* Patient hemodynamically unstable and DCCV required as an emergent procedure~* Prisoners or pregnant patients

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 80 Years
- Healthy Volunteers: f

Study Arms:
- Single Shock Group (Type: ACTIVE_COMPARATOR): Patients randomized to single shock will then be treated initially with a 200 Joule shock through the antero-posterior pads only.
- Double Shock Group (Type: ACTIVE_COMPARATOR): Patients randomized to the dual shock group will have two near-simultaneous 200-Joule shocks delivered through the two sets of pads (antero-posterior position and right infraclavicular-axillary position). The first of these shocks will be synchronized.

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