1/279. Arterial imaging.angioscopy, magnetic resonance angiography, computed tomography, and nuclear medicine are assuming an increasingly important role in arterial imaging. This review discusses recent advances in these modalities. angioscopy has proven valuable in monitoring intraoperative surgical procedures as well as percutaneous interventions. Carotid artery magnetic resonance angiography is gaining increasing acceptance in clinical practice. magnetic resonance angiography of the peripheral arteries is limited by spatial resolution and signal loss distal to the stenosis. The role of computed tomography in limiting the number of aortograms performed in evaluating aortic laceration remains controversial; however, several recent papers indicate its usefulness in evaluating clinically stable patients with abnormal chest radiographs. Computed tomography of abdominal aortic aneurysms may obviate the need for preoperative aortography in the majority of cases. Nuclear imaging for deep venous thrombosis using 111In-labeled antifibrin monoclonal antibodies was shown highly sensitive in its initial report.- - - - - - - - - - ranking = 1keywords = artery, stenosis (Clic here for more details about this article) |
2/279. Marked increase in flow velocities during deep expiration: A duplex Doppler sign of celiac artery compression syndrome.Symptoms of chronic mesenteric ischemia develop when the celiac artery is constricted by the median arcuate ligament of the diaphragm. Lateral aortography is the primary modality for diagnosing ligamentous compression of the celiac artery. However, duplex Doppler sonography performed during deep expiration can cause a marked increase in flow velocities at the compressed region of the celiac artery and suggest the diagnosis of celiac arterial constriction due to the diaphragmatic ligament.- - - - - - - - - - ranking = 5.6183061727595keywords = artery (Clic here for more details about this article) |
3/279. Respiratory distress due to tracheal compression by the dilated innominate artery.The case reported is of an 88 yr old female with hypertension and respiratory distress. A chest radiograph revealed a widening of the upper mediastinum. Computed tomographic scanning revealed tracheal compression by the innominate artery, which was elongated and curved. After intubation, she was treated with antihypertensive drugs. This resulted in the remarkable recovery of the patient from respiratory distress. To the authors' knowledge, this is the first reported case of respiratory distress owing to tracheal compression by elongation and curvature of the innominate artery.- - - - - - - - - - ranking = 4.8156910052224keywords = artery (Clic here for more details about this article) |
4/279. Pacing lead adhesions after long-term ventricular pacing via the coronary sinus.Left ventricular pacing via the coronary sinus is being increasingly used. There is little data to guide possible lead extractions that might be required in the future. Significant adhesions to the coronary veins were found 12 years after placing a pacing lead in the posterolateral coronary vein in a man with double inlet left ventricle and severe subpulmonary stenosis who had undergone a Fontan operation. The appearances suggest that percutaneous extraction from the proximal coronary sinus may be feasible but that difficulty may be encountered if the lead tip is placed into the distal coronary veins.- - - - - - - - - - ranking = 0.19738483246293keywords = stenosis (Clic here for more details about this article) |
5/279. Arterial tortuosity syndrome.We describe a patient with arterial tortuosity syndrome (ATS), a rare disorder comprising generalized tortuosity and elongation of all major arteries, soft skin, joint laxity, severe keratoconus, and diffuse tortuosity of the carotids and of intracranial arteries. The patient's probably affected brother and sister died at an early age. Cytochemical studies excluded Ehlers-Danlos type IV and type VII syndromes. We review 11 previously described patients.- - - - - - - - - - ranking = 0.374138607006keywords = carotid (Clic here for more details about this article) |
6/279. Bilateral radial artery pseudoaneurysms associated with bilateral ulnar artery atresia: a case report.Pseudoaneurysms of the radial artery are uncommon and most often localized in an area of penetrating vascular trauma or iatrogenic injury. Hypoplasia of the ulnar artery is even more rare. We report a case of bilateral radial artery pseudoaneurysms associated with complete absence of any ulnar contribution to the vascularity of the hand. A patient presented with bilateral tender masses adjacent to the anatomic snuff boxes that interfered with hand function. After confirming that these masses were bilateral radial artery pseudoaneurysms, resection of the pseudoaneurysms and microscopic reconstruction of the arterial segments preserved vascular integrity of the hands and provided relief of the patient's pain.- - - - - - - - - - ranking = 9.6313820104449keywords = artery (Clic here for more details about this article) |
7/279. Malpositioned or dislocated aortic endoprostheses: repositioning using percutaneous pull-down maneuvers.PURPOSE: To present the capabilities and potential complications of 2 percutaneous techniques for repositioning malpositioned or dislodged aortic endografts. methods: Seven male patients (median age 67.9 years, range 59 to 78) required correction of misplaced or dislocated endografts in the thoracic (n = 1) or infrarenal abdominal aorta (n = 6). In 1 patient, an infrarenal bifurcated stent-graft was mistakenly deployed across a renal artery; repositioning was accomplished by tugging caudally on a guidewire placed across the endograft bifurcation and exteriorized from both femoral arteries. An inflated balloon catheter was used to reposition 3 dislocated aortic devices (1 thoracic, 2 infrarenal) and 3 iliac graft limbs that had disconnected from the main graft body 6 to 12 months after implantation. RESULTS: Repositioning maneuvers were successful in all cases, with the devices being moved from 5 to 27 mm (median 7.8 mm). There were no procedure-related complications. CONCLUSIONS: Nonsurgical repositioning of misplaced aortic prostheses is technically feasible in individual cases. The risk associated with the procedure, however, cannot yet be evaluated.- - - - - - - - - - ranking = 0.80261516753707keywords = artery (Clic here for more details about this article) |
8/279. Temporal artery biopsy in herpes zoster ophthalmicus with delayed arteritis.A 58-year-old man developed herpes zoster ophthalmicus with delayed hemiparesis. Temporal artery biopsy confirmed the presence of a vasculitis. Electron microscopy of the temporal artery failed to reveal viral particles. herpes zoster ophthalmicus with delayed arteritis appeared to be a contiguous spread of vasculitis to the carotid system and not a direct viral invasion.- - - - - - - - - - ranking = 5.1898296122284keywords = artery, carotid (Clic here for more details about this article) |
9/279. Crushed stents in benign left brachiocephalic vein stenoses.Two hemodialysis patients presenting with left venous arm congestion due to benign catheter-induced stenosis of the left brachiocephalic vein were treated by angioplasty and stent placement. External compression of the stents was responsible for rapid recurrence of the symptoms. No osseous or vascular malformation could be identified. Mechanical constraints induced by respiratory chest wall motion and aortic arch flow-related pulsation are proposed to explain this observation. This potential hazard should be considered when stent placement into the left brachiocephalic vein is advocated.- - - - - - - - - - ranking = 0.19738483246293keywords = stenosis (Clic here for more details about this article) |
10/279. Complicated emergent endovascular repair of a life-threatening bilateral internal jugular vein occlusion.A 62-year-old woman had painful facial swelling that progressed to extensive periorbital and perioral edema with loss of vision, hearing, and consciousness. Her past surgical history was significant for right radical neck dissection including internal jugular vein (IJV) resection, laryngectomy, partial esophagectomy, tracheoesophageal fistula repair, and tracheostomy for squamous cell carcinoma of the oropharynx. In addition, the patient had received radiation therapy to the neck. A venogram revealed occlusion of the left IJV. A guidewire from the femoral vein was passed through the occluded segment; however, attempts to introduce an angioplasty balloon failed. A percutaneous basilic vein approach allowed passage of a dilator sheath over a guidewire, thereby enabling Wallstent deployment across the IJV occlusion. A second Wallstent was inserted across a stenosis in the brachiocephalic vein; however, this second stent reoccluded the IJV. Surgical removal of the second Wallstent was required through a segmental claviculectomy and venotomy. Patency was restored in the IJV and the brachiocephalic vein with the return of baseline neurologic function. This case demonstrates a complicated emergent endovascular repair of a life-threatening IJV occlusion that required surgical salvage.- - - - - - - - - - ranking = 0.19738483246293keywords = stenosis (Clic here for more details about this article) |
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