Objective To evaluate the long-term safety, efficacy and complications of placement vena cava filter in prevention of pulmonary embolism. Methods Seventy-three patients with proven diagnosis of deep venous thrombosis (DVT) and (or) pulmonary embolism (PE) by Doppler ultrasonography, DSA, CT or MRI, received percutaneous inferior vena cava filters (IVCF) from January 1994 to June 2005. The clinical data and imaging findings were evaluated retrospectively. The patients underwent telephone interview or questionnaire, abdominal X-rays, Doppler ultrasonography, computed tomographic pulmonary angiography (CTPA) or indirect CT venography (CTV) after a follow-up duration of 5 months to 11 years. Results Seventy-eight vena cava filters were used. There was 1 case of incomplete filter opening when placing filter. In follow-up, thrombi were trapped in the filter in 2 cases, filter tilting happened in 1 case, and there were no filter migration, filter disruption, filter perforation. Five of 73 cases were lost in follow-up visit, 14 patients died after implantation (5 days to 41 months, average 14.5 months). Among the 54 living patients, the identified recurrent PE was not noted. Three cases of recurrent DVT, 1 case of inferior vena caval thrombosis and 1 case of thrombosed filters were seen in follow- up. Conclusion Inferior veua cava filter is safe and effective for the long-term prevention pulmonary embolism, and the long-term major complications after filter placement are not frequent.

Objective To evaluate the effectiveness of endovascular intervention in treating acute cerebral stroke.Methods Thirty-two patients with acute cerebral stroke (22 with middle cerebral artery occlusion and 10 with internal carotid artery occlusion),admitted to and treated with endovascular intervention in our hospital from January 2010 to October 2013,were chosen in our study;14 were performed arterial thrombolysis+mechanical fragrnengation and 18 were performed mechanical fragrnengation+ solitaireAB stent thrombectomy.Retrospective analysis was performed on the clinical data and treatment efficacy,and the prevention experience of complications was concluded.Results CTA showed that complete recanalization was noted in 18 patients and partial recanalization in 5,with a recanalization rate reaching 7 1％.Postoperative symptomatic intracerebral hemorrhage was noted in 2 patients (6％) and 1 (3.1％) had large area of cerebral infarction.One month after the treatment,MRI indicated decreased areas of infarction in all patients.NIHSS scores were 4-6 points of all patients;favorable prognosis was noted in 23 patients (72％).Nine patients had heavy neurological dysfunction,with limb muscle strength less than grade Ⅲ.Conclusion Endovascular intervention in treating acute cerebral stroke can get high recanalization rate,and achieve good clinical outcome.