[Inferior vena cava filters in pulmonary embolism prevention].

Pulmonary embolism (PE) is the most serious sign of venous thromboembolism and the 3rd most frequent cause of cardiovascular death. Therapy with anticoagulants represents, among other measures, the mainstay of PE treatment. However, anticoagulant therapy does not prevent recurrence of pulmonary embolism in 3-20% of patients.

Spurious signals in direct digital frequency synthesizers due to the phase truncation.

Direct digital frequency synthesizers (DDS or DDFS) are widely used in modern communications and measurement devices. Their advantages are small size and power consumption together with excellent frequency stability, high frequency resolution, and short switching times. The difficulties are rather low output frequencies (500 MHz at the present state of the art) and a large set of the spurious signals very often above the -80 dB level.

Giant serpentine internal carotid artery aneurysm: endovascular parent artery occlusion. A pediatric case report.

We report on a case of a 14-year-old boy with a giant serpentine aneurysm of the left internal carotid artery cavernous segment with symptoms of acute mass-effect cranial nerve dysfunction. After a balloon occlusion test of the collateral circulation, the patient underwent parent artery occlusion with platinum Guglielmi detachable coils and fibered coils. An optimal angiographic result and successful clinical outcome were achieved with resolution of IIIrd, IVth and VIth cranial nerve ischemic symptoms.

Oral contraceptive induced cerebral venous thrombosis treated by local catheter directed thrombolysis.

We report on a case of cerebral venous thrombosis (CVT) induced by oral contraception (OC) activated coagulopathy and its endovascular treatment. Deep venous system and dural sinuses thrombosis complicated with severe neurological deficit and coma due to right thalamic edema and ischemia in a young woman was treated by local thrombolysis with an administration of 0.6 mg/h of the rtPA and the concomitant intravenous unfractioned heparin infusion (700 IU/h).

Cavernous sinus dural fistula treated by transvenous facial vein approach.

We report on the endovascular treatment of the spontaneous indirect dural carotid cavernous sinus type D fistula in a 60-year-old woman, in whom ipsilateral facial, angular and superior ophthalmic veins catheterization was performed to get access to the fistula site for embolization treatment. Approach via the facial vein is helpful after inferior petrosal sinus treatment failure. Although this technique requires caution in the angular vein region it allows a safe and effective treatment of these lesions.