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Initial Experience of Multipurpose Mechanical Aspiration System for Acute High-Risk Pulmonary Embolism: A Prospective
GuangMing Tan1,2, Timothy Ho Him Kam1, Edbert Cheuk Yin Lai1
1Department of Medicine and Therapeutic The Chinese University of Hong Kong Hong Kong China.
Abstract:
High-risk acute pulmonary embolism (PE) is associated with significant in-hospital mortality. Large-Bore Mechanical Thrombectomy (LBMT) is a treatment option for acute PE, but data on its efficacy in high-risk PE was limited. This prospective case series reported the outcomes of 14 patients with high-risk PE treated using a novel multipurpose mechanical aspiration system (MMAS). Most patients were in hemodynamic decompensation, requiring inotropic or mechanical circulatory support. The mean procedural time was 73.5 ± 39.2 min. Complete procedural success was achieved in 78.6% of the cases, while two patients required bailout therapies. The mean pulmonary arterial pressure decreased by 27.2%, and the right-ventricle/left-ventricle ratio normalized in 85.7% of patients. The primary endpoint-in-hospital mortality-was 0%, while the major bleeding rate was 27.2%. These findings suggest that MMAS is a safe and effective intervention for acute high-risk PE.
Insights
A novel multipurpose mechanical aspiration system (MMAS) shows promising results for treating high-risk acute pulmonary embolism (PE). This study found MMAS to be safe and effective, with zero in-hospital mortality in treated patients.
Area of Science:
- Cardiology
- Interventional Pulmonology
- Medical Devices
Background:
- High-risk acute pulmonary embolism (PE) carries a substantial in-hospital mortality risk.
- Existing data on Large-Bore Mechanical Thrombectomy (LBMT) for high-risk PE is limited.
- Mechanical thrombectomy offers a potential treatment avenue for acute PE.
Purpose of the Study:
- To evaluate the safety and efficacy of a novel multipurpose mechanical aspiration system (MMAS) for treating high-risk acute PE.
- To assess procedural outcomes and clinical improvements in patients with hemodynamically unstable PE.
Main Methods:
- A prospective case series involving 14 patients with high-risk acute PE.
- Treatment utilized a novel multipurpose mechanical aspiration system (MMAS).
- Hemodynamic parameters and procedural success rates were monitored.
Main Results:
- Complete procedural success was achieved in 78.6% of cases.
- Mean pulmonary arterial pressure decreased by 27.2%, and RV/LV ratio normalized in 85.7%.
- Zero in-hospital mortality was observed, with a major bleeding rate of 27.2%.
Conclusions:
- The multipurpose mechanical aspiration system (MMAS) appears to be a safe and effective intervention for acute high-risk PE.
- MMAS demonstrates significant hemodynamic improvements and a favorable mortality outcome.
- Further research is warranted to confirm these findings in larger cohorts.
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Excess pleural fluid or air may accumulate in some respiratory disorders in the thoracic cavity. To treat pleural effusion, a physician conducts thoracentesis by carefully piercing the chest wall and entering...

