Mechanical Thrombectomy as Definitive Therapy for Proximal Pulmonary Embolism Post Cardiac Arrest

Acute pulmonary embolism remains a major cause of cardiovascular morbidity and mortality, with presentations ranging from stable exertional breathlessness to rapidly fatal hemodynamic collapse. In patients who fall in the intermediate high-risk and high-risk categories, prompt restoration of pulmonary perfusion is crucial to reduce right ventricular dysfunction and prevent clinical deterioration. Systemic thrombolysis can achieve rapid reperfusion but carries a substantial risk of major bleeding and intracranial hemorrhage, particularly in older adults or those with comorbidities. This therapeutic limitation has driven increasing interest in mechanical thrombectomy, a catheter-based intervention that offers rapid clot debulking while minimizing hemorrhagic risk. We report a case of high-risk acute pulmonary embolism, which led to hemodynamic compromise and cardiopulmonary collapse, in which systemic thrombolysis failed to achieve adequate reperfusion and correction of acute hypoxia. The patient was successfully treated with catheter-directed aspiration thrombectomy. This highlights the need for consideration of mechanical thrombectomy as a fast and efficient treatment for selected patients who fall into intermediate and high-risk categories, especially as the technology and experience develop.