1/1212. A new sign of occlusion of the origin of the internal carotid artery.When the origin of the internal carotid artery is occluded, the transmission of cardiac sounds along the carotid stops at the site of the occlusion. This is a new neurovascular sign which is being reported.- - - - - - - - - - ranking = 1keywords = carotid artery, artery (Clic here for more details about this article) |
2/1212. Carotid endarterectomy and intracranial thrombolysis: simultaneous and staged procedures in ischemic stroke.PURPOSE: The feasibility and safety of combining carotid surgery and thrombolysis for occlusions of the internal carotid artery (ICA) and the middle cerebral artery (MCA), either as a simultaneous or as a staged procedure in acute ischemic strokes, was studied. methods: A nonrandomized clinical pilot study, which included patients who had severe hemispheric carotid-related ischemic strokes and acute occlusions of the MCA, was performed between January 1994 and January 1998. Exclusion criteria were cerebral coma and major infarction established by means of cerebral computed tomography scan. Clinical outcome was assessed with the modified Rankin scale. RESULTS: Carotid reconstruction and thrombolysis was performed in 14 of 845 patients (1.7%). The ICA was occluded in 11 patients; occlusions of the MCA (mainstem/major branches/distal branch) or the anterior cerebral artery (ACA) were found in 14 patients. In three of the 14 patients, thrombolysis was performed first, followed by carotid enarterectomy (CEA) after clinical improvement (6 to 21 days). In 11 of 14 patients, 0.15 to 1 mIU urokinase was administered intraoperatively, ie, emergency CEA for acute ischemic stroke (n = 5) or surgical reexploration after elective CEA complicated by perioperative intracerebral embolism (n = 6). Thirteen of 14 intracranial embolic occlusions and 10 of 11 ICA occlusions were recanalized successfully (confirmed with angiography or transcranial Doppler studies). Four patients recovered completely (Rankin 0), six patients sustained a minor stroke (Rankin 2/3), two patients had a major stroke (Rankin 4/5), and two patients died. In one patient, hemorrhagic transformation of an ischemic infarction was detectable postoperatively. CONCLUSION: Combining carotid surgery with thrombolysis (simultaneous or staged procedure) offers a new therapeutic approach in the emergency management of an acute carotid-related stroke. Its efficacy should be evaluated in interdisciplinary studies.- - - - - - - - - - ranking = 0.34340504642126keywords = carotid artery, artery (Clic here for more details about this article) |
3/1212. popliteal artery occlusion as a late complication of liquid acrylate embolization for cerebral vascular malformation.Occlusion of arteriovenous malformations of the brain (BAVMs) by means of an endovascular approach with liquid acrylate glue is an established treatment modality. The specific hazards of this procedure are related to the central nervous system. In the case of unexpectedly rapid polymerization of the cyanoacrylate glue and adhesion of the delivering microcatheter to the BAVM, severing the catheter at the site of vascular access is considered an acceptable and safe management. We present a unique complication related to this technique that has not been described yet. Fragmentation and migration of the microcatheter, originally left in place, had caused popliteal artery occlusion, which required saphenous vein interposition, in a 25-year-old man. Suggestions for avoiding this complication are discussed.- - - - - - - - - - ranking = 0.35851261605315keywords = artery (Clic here for more details about this article) |
4/1212. Thyrocervical to vertebral artery transposition and ipsilateral carotid endarterectomy.BACKGROUND: We report a new method for treating patients with symptomatic high-grade stenosis of the proximal vertebral artery associated with high-grade stenosis of the ipsilateral carotid artery. methods: Our patient had high-grade stenosis of the proximal right vertebral artery as well as high-grade stenosis of the ipsilateral carotid artery and suffered continued posterior circulation ischemic neurological deficits despite anticoagulation. RESULTS: The patient was successfully treated with a carotid endarterectomy and thyrocervical-to-vertebral artery transposition in a single operation. CONCLUSION: This procedure has the advantage in this setting of avoiding additional cross clamping on the diseased carotid artery that would normally be required for the vertebral-to-carotid artery transposition with carotid endarterectomy. Also, thrombosis at one anastamosis site would not endanger the other site as well.- - - - - - - - - - ranking = 1.3019176624744keywords = carotid artery, artery (Clic here for more details about this article) |
5/1212. Superior and inferior limb ischaemia in giant cell arteritis: angiography follow-up.giant cell arteritis most often affects the superficial temporal artery. Arterial territories such as the facial, carotid, myometrial and upper and lower limb arteries may be affected. In this paper we describe the case of a 52-year-old patient with upper and lower limb ischaemia who presented with grade III ischaemia in the left lower limb. giant cell arteritis was diagnosed as responsible for the symptoms. After treatment with corticoids, an angiographic improvement was evidence after 2-year period. The low number of reported cases, the diverse symptoms and varied course make diagnosis of GCA difficult. Therefore, GCA must be taken into consideration in the ischaemia of inferior and superior limbs whether isolated or simultaneous.- - - - - - - - - - ranking = 0.07170252321063keywords = artery (Clic here for more details about this article) |
6/1212. Left ventricle to pulmonary artery conduit in treatment of transposition of great arteries, restrictive ventricular septal defect, and acquired pulmonary atresia.Progressive cyanosis after banding of the pulmonary artery in infancy occurred in a child with transposition of the great arteries and a ventricular septal defect, and a Blalock-Taussig shunt operation had to be performed. At the time of correction a segment of pulmonary artery between the left ventricle and the band was found to be completely occluded so that continuity between the left ventricle and the pulmonary artery could not be restored. A Rastelli type of operation was not feasible as the ventricular septal defect was sited low in the muscular septum. Therefore, in addition to Mustard's operation, a Dacron conduit was inserted from the left ventricle to the main pulmonary artery to relieve the obstruction. Postoperative cardiac catheterization with angiocardiography indicated a satisfactory haemodynamic result. The patient remains well 11 months after the operation. This operation, a left ventricle to pulmonary artery conduit, may be used as an alternative procedure in patients with transposition of the great arteries, intact interventricular septum, and obstruction to the left ventricular outflow, if the obstruction cannot be adequately relieved.- - - - - - - - - - ranking = 0.64532270889567keywords = artery (Clic here for more details about this article) |
7/1212. Temporary Strecker stent for management of acute dissection in popliteal and crural arteries.Stent placement is a widely used bail-out treatment for dissection of peripheral arteries. Below the level of the superficial femoral artery permanent stenting is complicated by a high incidence of subacute thrombosis and restenosis. We present two cases of arterial occlusion due to acute iatrogenic dissection of the popliteal and distal fibular arteries. Successful treatment was achieved with a new bail-out procedure. Strecker stents were implanted to seal off the dissection flap. stents were retrieved easily after 24 hr using a myocardial biopsy forceps. After stent retrieval the temporarily stented segments were patent and showed a larger lumen compared with segments treated by balloon dilatation alone. Temporary stenting is a simple and safe procedure and offers the advantage of tacking up dissection membranes and preventing recoil. Persistent presence of a metallic implant as a source of continued injury and stimulus for intimal proliferation is avoided.- - - - - - - - - - ranking = 0.07170252321063keywords = artery (Clic here for more details about this article) |
8/1212. Hemodynamic and metabolic changes following cerebral revascularization in patients with cerebral occlusive diseases.Changes in cerebral hemodynamics and metabolism following cerebral revascularization were evaluated using positron emission tomography (PET). Ten patients who had received nonsurgical treatment for 3-6 months for minor completed stroke underwent superficial temporal artery to middle cerebral artery (STA-MCA) bypass surgery. All patients showed no extensive infarction on MR, and responsible vascular lesions were detected in the anterior circulation. A PET study of cerebral blood flow (CBF), oxygen extraction fraction (OEF), cerebral metabolic rate for oxygen (CMRO2), and cerebral metabolic rate for glucose (CMRGlu) measurements was performed before and 1.5 months after surgery using a steady state technique. Angiographically, anastomotic sites were patent in all patients. Seven patients showed neurological improvement after surgery and the others showed no improvement. The decreases in CBF, CMRO2 and CMRGlu recovered to some extent not only on the lesion side but also on the contralateral side after surgery. The increase in OEF values on the lesion side subsequently decreased after surgery. CMRO2 and CMRGlu showed parallel changes. It is concluded that the metabolic improvement afforded by the cerebral revascularization resulted in the neurological improvement, and that PET study is a powerful method for evaluating patients with cerebral occlusive diseases.- - - - - - - - - - ranking = 0.14340504642126keywords = artery (Clic here for more details about this article) |
9/1212. Intraluminal Palmaz stent implantation for treatment of recurrent carotid artery occlusive disease: a plan for the future.While carotid endarterectomy (CEA) has been used commonly and with great effectiveness for de novo carotid occlusive lesions, its success in cases of recurrent disease has been attenuated by a higher incidence of complications and lower durability. Although interventional techniques have been introduced cautiously into the cerebrovascular system, balloon dilation for both primary and recurrent carotid atherosclerotic disease has been successful in establishing an adequate lumen without an increase in embolic complications over surgery. Because the likelihood exists that postdilation restenosis may be as common in the carotid arteries as it is in other vascular segments, the use of intraluminal stenting may mitigate this long-term complication, a benefit that has been demonstrated in other high flow vessels such as the aorta and iliac arteries. To begin an investigation of this hypothesis, we treated a 69-year-old symptomatic man who required a third intervention for recurrent carotid disease. A > 90% stenosis of the distal third of his right common carotid artery was successfully dilated, and a Palmaz stent was deployed without incident. The patient experienced no complications to the percutaneous procedure, and at 15 months posttreatment, he is well and asymptomatic. Although greater clinical experience must be accumulated with this new approach, intraluminal stenting following balloon dilation for recurrent carotid disease may surpass redo CEA in long-term patency and may entail fewer procedural complications.- - - - - - - - - - ranking = 1keywords = carotid artery, artery (Clic here for more details about this article) |
10/1212. Spontaneous reversibility of early reobstruction following percutaneous transluminal angioplasty.Early reocclusion and late restenosis are well-known problems after percutaneous transluminal angioplasty (PTA). We report here on a phenomenon not described so far in two patients with peripheral arterial occlusive disease who had PTA of the common iliac and the superficial femoral artery, respectively. Both had a good hemodynamic and clinical initial result. However, within two days after PTA symptomatic reobstruction occurred documented by noninvasive measurements. Noteworthy, this reobstruction was spontaneously reversible within days. The possible pathomechanism is discussed.- - - - - - - - - - ranking = 0.07170252321063keywords = artery (Clic here for more details about this article) |
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