Search Results
Results 401 - 450 of 781
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Azadzoi K M - - 1996
PURPOSE: The aim of this study was to explore the possible etiologic relationship of hypercholesterolemia and atherosclerosis to corporal veno-occlusive dysfunction. MATERIALS AND METHODS: In the New Zealand White rabbit, the competence of the corporal veno-occlusive mechanism was examined at various intervals after exposure to control diet, high cholesterol diet, ...
Sandbaek G - - 1996
PURPOSE: To determine the association between successful intraarterial thrombolysis and the following factors: sex, age, symptoms, duration of symptoms, length of occlusion, conduit type, runoff, and catheter localization. MATERIAL AND METHODS: Forty-six patients with acute or subacute occlusions of peripheral native arteries and grafts were treated with continuous intraarterial infusion ...
Alhaddad I A - - 1996
To define the time limit and mechanism of the effects of late coronary artery reperfusion on infarct expansion, rats were randomized into one of four groups: permanent left coronary artery occlusion; and 2, 8, and 16 hours of left coronary artery occlusion followed by reperfusion. Two weeks after coronary occlusion, ...
Creutzig A - - 1996
Side effects of long-term interferon (IFN) therapy for myeloproliferative disorders may be vasospastic Raynaud's attacks and lupus-like illness. The authors report on a woman with chronic myelogenous leukemia who experienced severe trophic lesions of the fingers after forty-nine months of IFN therapy. Digital artery occlusions could be proven arteriographically.
Levin T N - - 1996
Treatment of chronic total occlusions remains a limitation of percutaneous revascularization and is associated with lower immediates success and higher long-term restenosis rates compared to less severe stenoses. While part of the problem in dealing with total occlusions relates to successfully passing a wire across the occluded segment, most chronic ...
Wang S - - 1996
Background: Current animal models of thrombotic arterial occlusion are complex and difficult to perform. A more simplified model of thrombotic occlusion with angiographic endpoints and mixed thrombotic composition would be useful to assess the effectiveness of new therapeutic modalities. Methods and results: Femoral arteries in 38 New Zealand White rabbits ...
Peltonen S - - 1995
We compared hemostatic and fibrinolytic plasma markers in 41 patients having acute or subacute occlusion of lower limb arteries with 20 patients suffering stable peripheral arterial occlusive disease (PAOD). During occlusion, the amount of thrombin-antithrombin III (TAT) complex was five-fold higher compared with stable PAOD, being 16 micrograms/l [95% confidence ...
Kandarpa K - - 1995
Local intraarterial thrombolytic therapy restores blood flow to the ischemic limb by dissolving the occlusive thrombus and identifies culprit lesions for treatment by means of surgical and/or percutaneous procedures. The techniques used for administration of the thrombolytic agent, the drug used, and the criteria for termination of the therapy are ...
Berkey G S - - 1995
PURPOSE: To evaluate a nonsurgical, nonhormonal sterilization procedure performed with use of transvaginal microcatheterization techniques and methyl cyanoacrylate (MCA) as a sclerosing agent MATERIALS AND METHODS: Seventeen adult virgin female rabbits underwent bilateral fallopian tube cannulation through a nonsurgical transvaginal approach with use of a coaxial catheter system with fluoroscopic ...
Nakano S - - 1995
PURPOSE: To correlate the location of large subcortical infarcts with the site of cerebrovascular occlusive disease. METHODS: We examined CT and angiographic findings of 38 patients with major arterial occlusive disease and newly developed large subcortical infarcts of 2.0 cm or more, which were classified into three types: striatocapsular infarcts ...
Reilly J M - - 1995
The retroperitoneal approach to the aorta and the iliac arteries provides excellent exposure for reconstruction of these vessels for aortoiliac occlusive disease. Furthermore, the weight of evidence in the literature indicates that this approach is associated with fewer complications, a shorter length of stay in the hospital, and lower costs. ...
Braithwaite B D - - 1995
BACKGROUND: Catheter-directed peripheral thrombolysis is used increasingly for the management of acute limb ischemia. The comparison of different agents and techniques has proven difficult because of the variations in patient presentation, vessel involvement, and treatment methods. METHODS: A computerized database in which angiographic information is stored on computerized arterial maps ...
Raustia A M - - 1995
The role of the occlusion in the etiology and prevalence of temporomandibular disorders (TMD) has not been conclusively demonstrated. Occlusal factors and condyle position asymmetry as deduced from computed tomography (CT) axial scans were correlated with signs and symptoms of TMD in 49 young adults (mean age 24 years, range ...
White S A - - 1995
OBJECTIVES: Arteriography may precipitate occlusive complications in stenotic vessels by a toxic effect on the vascular endothelium, leading to intra-arterial thrombosis. The aim of this retrospective study was to determine the incidence of arterial occlusion following arteriography. METHODS: We studied 101 consecutive patients (71 male, 30 female; median age 72 ...
White C J - - 1995
OBJECTIVES: This study used angioscopy to determine the specific cause of vessel occlusion after percutaneous transluminal coronary angioplasty and compared the angiographic and angioscopic lesion morphologies in this setting. BACKGROUND: Occlusion of a dilated coronary artery is the major cause of morbidity and mortality after coronary angioplasty. Attempts to reopen ...
Nowlin T P - - 1995
Analysis of the occlusion and function of the masticatory system should be part of a thorough examination of the patient. This is especially important when signs or symptoms of functional disturbances are present or when planning extensive occlusal restorations. This article has strived to present (1) indications for occlusal analysis; ...
Garcia J H - - 1995
BACKGROUND AND PURPOSE: Occluding a large intracranial artery in rats produces a brain lesion that grows in terms of an increase in both surface area and number of necrotic neurons. The present study investigated whether reperfusing the ischemic territory 30 to 60 minutes after the arterial occlusion would have a ...
Kichikawa K - - 1995
Thirty patients with atherosclerotic stenoses or occlusions of iliofemoral arteries were treated from the contralateral approach using a newly designed J-shaped sheath. Seven patients with stenoses and one with an occlusion were successfully dilated with balloon angioplasty. Twenty-two patients with occlusions were treated with urokinase infusion, 16 of whom received ...
Pétursson M K - - 1995
To determine whether coronary angiography is predictive of the future site of coronary occlusion, we analyzed the coronary angiograms of 246 consecutive patients having two or more angiograms without therapeutic invasive intervention in the interval between angiograms. The average interval between studies was 46 months. Of 2183 normal segments at ...
Bealer J F - - 1995
In animal experiments, it has been shown that tracheal occlusion counteracts the pulmonary hypoplasia associated with congenital diaphragmatic hernia (CDH). Successful clinical implementation requires a reliable, reversible, and atraumatic technique of occluding the fetal trachea. With this clinical goal in mind, the authors evaluated the following three methods of tracheal ...
Cervera R - - 1995
Since the original description and definition of the antiphospholipid syndrome (APS), a number of distinct clinical manifestations related to it have appeared in the literature. These include vascular obstruction of both veins and arteries, thrombus formation on the endocardium and its consequences, as well as a group of other conditions ...
Levy P J - - 1995
An increased incidence of premature atherosclerotic arterial occlusive disease was recently reported in young adults. This condition is characterized by early occurrence of severe symptoms, lower incidence of typical cardiovascular risk factors for atherosclerosis, different natural course of arterial disease vis-a-vis older population, and poor outcome of a standard treatment. ...
Nagasawa S - - 1995
A hydraulic vascular model of the vertebrobasilar artery with an autoregulatory mechanism was constructed. The haemodynamic effect of superficial temporal artery (STA)-posterior cerebral artery (PCA) bypass was investigated in cases of bilateral vertebral artery (VA) occlusion and basilar artery (BA) occlusion. Assuming therapeutic BA occlusion for basilar bifurcation aneurysms, the ...
Verbeke C S - - 1995
In a 66-year-old patient morphologic features of a pulmonary veno-occlusive disease were found. Besides, a striking foreign body giant cell reaction with phagocytosis of altered elastic tissue in totally or partially occluded venous blood vessels resembled the so-called pulmonary sideroelastosis, an entity originally described by Ceelen. In this case report, ...
Irwin M S - - 1995
Reliable early detection of adverse circulatory changes within a flap following free tissue transfer and early re-exploration are vital to minimise flap failure. Most surgeons rely on clinical assessment to monitor these changes but techniques such as plethysmography and laser Doppler have their advocates. These methods are limited however to ...
Suzuka H - - 1995
We examined the antithrombotic effect of ticlopidine on occlusive thrombi of small coronary arteries in (NZWxBXSB)F1 [(WxB)F1] male mice with myocardial infarction (MI) and systemic lupus erythematosus (SLE). Ticlopidine (3 and 10 mg/kg) was given to the mice as an additive to a standard laboratory diet from the time the ...
Canale P - - 1994
Splanchnic artery occlusion shock was induced in male anaesthetized rats by clamping the splanchnic artery for 45 min. The arteries were then released and survival rate, mean survival time, mean arterial blood pressure, plasma levels of thromboxane B2 and 6-keto-PGF1 alpha, macrophage phagocytosis activity and plasma levels of myocardial depressant ...
Kubota I - - 1994
Heart rates (HR) were measured before (control HR) and after (ischemic HR) balloon inflation during percutaneous transluminal coronary angioplasty in 96 patients with effort angina pectoris. The delta HR, defined as (ischemic HR-control HR), in the right coronary artery occlusion was significantly smaller than that in the left anterior descending ...
Reekers J A - - 1994
Percutaneous intentional extraluminal recanalisation (PIER) of the femoropopliteal artery is a new catheter technique to overcome long chronic occlusions. This technique was applied to 40 long chronic occlusions of the femoropopliteal segment. The mean length of the superficial femoral artery (SEA) occlusions was 16.9 cm, the mean length of the ...
Airaksinen K E - - 1994
Autonomic mechanisms may have an important role in the clinical presentation of acute coronary occlusion. This research was designed to evaluate the effect of preocclusion stenosis severity on the immediate autonomic heart rate (HR) responses to a subsequent acute occlusion of the coronary artery. HR and its variability in the ...
Tanigawa N - - 1994
Arterial occlusion using radiofrequency energy was performed. The length of the noninsulated part of the guidewire was 10 mm and the duration of radiofrequency supply was 20 s. Animal experiments were carried out in 17 canine arteries; 4 out of 6 arteries less than 2.3 mm in diameter were completely ...
Steinberg G K - - 1994
Temporary intracranial arterial occlusion is often utilized during the surgical treatment of intracranial aneurysms. Although numerous experimental studies have suggested that repetitive, brief periods of global ischemia cause more severe cerebral injury than a similar single period of global ischemia, this issue has not been extensively studied in relation to ...
Skinner J E - - 1994
Electrocardiograms were recorded in conscious pigs during psychological stress (touching), left anterior descending coronary artery occlusion, intracerebral levopropranolol (0.05 mg/kg), and their respective controls. The R-R intervals were evaluated with both a deterministic measure (point correlation dimension) and a stochastic one (mean). Only the deterministic measure was sensitive to between-subject ...
Levi M - - 1994
The occurrence of unexplained, rapidly recurring occlusions of arteries and veins in a previously healthy young woman is described. Post mortem examination showed no macroscopic abnormalities but revealed microscopic metastatic adenocarcinoma with remarkable intravascular localisation of the malignant cells. Whereas highly sensitive markers for the existence of systemic activation of ...
Mori Y - - 1994
Canine models of autologous PE and balloon occlusion of the pulmonary vasculature were used to evaluate radioaerosol deposition and to quantify radioaerosol clearance in the immediate postembolic period. METHODS: A total of 28 animals were anesthetized, intubated and studied (central balloon occlusion = 4, peripheral balloon occlusion = 7, autologous ...
Ishikawa K - - 1994
A thin myocardial layer adjacent to the epicardium (epicardial rim) often survives after transmural myocardial infarction. Regional myocardial blood flow (Qm) at this rim may be high enough to maintain myocardial viability during coronary occlusion. To test this hypothesis, we measured Qm in 12 anesthetized dogs during left anterior descending ...
Chleboun J O - - 1994
The survival of tissues distal to major arterial occlusions is critically dependent on the development of collateral blood vessels. The biochemical events fundamental to their evolution remain undefined. To determine the role of endogenous basic fibroblast growth factor in the development of the collateral circulation we evaluated the dose response ...
Hashemi H A - - 1994
The goal of this prospective study of the piezoelectric pulse sensor device was to determine its technical applications and its ability to detect lower extremity occlusive arterial disease. Ten extremities (five volunteers) were evaluated to assess the ability to place the sensor in the correct anatomic position on a foot ...
Nathan M A - - 1994
99Tcm-hexamethylpropyleneamine oxime (99Tcm-HMPAO) single photon emission computed tomographic (SPECT) brain imaging performed in conjunction with balloon test occlusion of the carotid artery has been used to assess risk of neurologic sequelae that might follow permanent surgical ligation of the artery. The predictive value of cortical hypoperfusion during temporary carotid occlusion ...
Selman W R - - 1994
Temporary occlusion of an intracranial artery is frequently necessary in the surgical management of intracranial aneurysms, arteriovenous malformations, and tumors. While the risks of vessel damage associated with clip application have been lessened by improved design, the threat of ischemic damage remains. It is unclear whether multiple, brief periods of ...
Moss J G - - 1994
PURPOSE: To evaluate the effectiveness of a new vascular occlusion device. MATERIALS AND METHODS: The device was created by coating a balloon-expandable stent with a silicone sleeve that tapers to a blind-ended nozzle at its leading end. Once crimp-mounted on an angioplasty balloon catheter, the device is introduced over a ...
Belli A M - - 1994
A low speed rotational catheter system (ROTACS) was used to recanalize total occlusions of the femoropopliteal artery in two patient groups. In Group A, previous attempts to recanalize the occlusions using standard guidewires and catheters had failed. Group B had undergone no previous attempts at recanalization. The ROTACS was successful ...
Reilly J M - - 1994
Aortic aneurysms are characterized by the destruction of the extracellular matrix of the media, whereas occlusive disease involves excess matrix accumulation within the intima. Plasmin degrades extracellular matrix directly and indirectly by activation of latent metalloenzymes. To determine the expression of tissue- and urokinase-type plasminogen activators, immunoassay, fibrin autography, Northern ...
Kinouchi H - - 1994
Middle cerebral artery (MCA) occlusion in halothane-anesthetized rats induced the zinc finger gene, NGFI-A, in brain. In situ hybridization studies showed that NGFI-A was induced throughout all of the cortex following MCA occlusion. By 24 h after MCA occlusion there was little expression of NGFI-A mRNA in the core of ...
Heller L I - - 1994
Nine Yorkshire pigs underwent coronary artery occlusion followed by 2 hours of reperfusion. In five pigs (group A) the occlusion time was 15 minutes and in four pigs (group B) the occlusion time was 1 hour. Teboroxime was administered and images were acquired at baseline, and following occlusion and reperfusion. ...
Bare R L - - 1994
Penile revascularization via inferior epigastric dorsal penile artery bypass is a treatment option for men with vasculogenic impotence due to proximal segmental arterial occlusion. Various diagnostic tests have been used to identify arterial vascular disease but pudendal arteriography remains the gold standard anatomical study. Unfortunately, more than 80% of impotent ...
Yano K - - 1994
We investigated to determine the time limits for intestinal ischemia and congestion. The experimental models were produced by clamping both ends and the intended feeder vessels of an approximately 1-cm length of rat jejunum. The results showed that in arteriovenous occlusion, the time required for the recovery rate to reach ...
London N J - - 1994
The technique of subintimal angioplasty has been attempted on 200 consecutive femoropopliteal artery occlusions of median (range) length 11 (2-37) cm. The principle of the technique is to traverse the occlusion in the subintimal plane and recanalise by inflating the angioplasty balloon within the subintimal space. The technical success rate ...
Marsicano J - - 1994
Thrombotic occlusion of the left common iliac artery occurred in a 59-year-old man after an anterior and posterior spinal fusion. Preoperatively, the patient was known to have peripheral vascular disease. Symptoms of an L4-5 radiculopathy were noted postoperatively. After an iliac-iliac bypass, the symptoms completely resolved. Retraction of the vessels ...
Lamping K G - - 1994
The purpose of this study was to examine mechanisms involved in the response of native collaterals to coronary occlusion. In anesthetized dogs native collaterals were identified as vessels coursing between the left anterior descending and left circumflex arteries using fluorescence angiography. After a left anterior descending occlusion in 12 dogs, ...
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