Please assess the completion status of the following clinical trial:

Trial Title: Low Dosage of rt-PA in the Treatment of Pulmonary Thromboembolism in China

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

Eligibility Criteria:
Inclusion Criteria:~* age between 18 and 75~* symptomatic PE confirmed by: a high probability ventilation-perfusion lung scanning (V/Q scan) or the presence of intraluminal filling defect on spiral computed tomographic pulmonary angiography (CTPA)~* PTE patients with haemodynamic instability, or cardiogenic shock~* anatomic obstruction more than 2 lobes on CTPA, or defect more than 7 segments on V/Q scan combined with evidence of right ventricular dysfunction(RVD) and pulmonary hypertension on echocardiography~* written informed consent~Exclusion Criteria:~* active bleeding or spontaneous intracranial hemorrhage~* major surgery, organ biopsy or recent puncture of a non-compressible vessel less than 10 days~* cerebral arterial thrombosis within 2 months~* gastro-intestinal bleeding within 10 days~* major trauma within the past 15 days~* neurosurgery or ophthalmologic operation with 30 days~* uncontrolled hypertension (systolic blood pressure \> 180 mmHg and/or diastolic blood pressure \> 110 mmHg)~* recent external cardiac resuscitation manoeuvres~* platelet count \< 100 000/mm3 at admission~* pregnancy, puerperium or lactation with 2 weeks~* infectious pericarditis or endocarditis~* severe hepatic and kidney dysfunction~* hemorrhagic retinopathy due to diabetes~* a known bleeding disorder

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 75 Years
- Healthy Volunteers: f

Study Arms:
- Group 1 (Type: ACTIVE_COMPARATOR): rt-PA 100 mg continuous intravenous infusion for 2 hours
- group 2 (Type: EXPERIMENTAL): rt-PA 50 mg continuous intravenous infusion for 2 hours

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