Percutaneous Mechanical Thrombectomy of Atriocaval Floating Thrombus After Impella RP Removal in a Critically Ill Patient.

The rapid institution of mechanical circulatory support (MCS) during cardiogenic shock secondary to severe biventricular failure is strongly recommended. Despite the introduction of less-invasive devices and adequate anticoagulation protocols, the presence of vascular complications in patients treated with MCS has not yet been eliminated. Here, the authors report a 60-year-old patient treated with the Bi-Pella approach for biventricular failure. Despite anticoagulant therapy, the patient developed a floating thrombosis in the inferior vena cava extending to the right atrium after the Impella RP removal. Considering the thrombus instability and the risk of pulmonary embolism, the patient was treated urgently for a percutaneous mechanical thrombectomy using the AngioJet thrombectomy system. The procedure was completed without intraoperative complications, and both the completion angiography and transesophageal echocardiography showed complete thrombus removal. No procedure-related complications occurred, but the patient died from progressive worsening of left ventricular failure on the 16th postoperative day. In the case of proximal extensive deep vein thrombosis with an increased risk of pulmonary embolism, the use of percutaneous mechanical thrombectomy could be a therapeutic option, even in critically ill patients, due to its minimally invasive nature and low rates of complications.
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