Search Results
Results 451 - 500 of 770
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Claes G - - 1994
Arterial insufficiency of the hands due to vascular spasm-morbus Raynaud is an extremely unpleasant condition. Elicited by cold temperatures, the disease can make it impossible for the patient to go out in cold environments. The condition seldom leads to skin necrosis, which is the case in arterial insufficiency caused by ...
Scholten F G - - 1993
The majority of lower limb arterial occlusions are located in the distal third of the thigh. However, the exact location of occlusions in relation to the surrounding anatomy has never been examined. Duplex ultrasound was used to determine the location of femoropopliteal occlusions in 50 patients by comparing the level ...
Freed M - - 1993
Inability to cross the site of occlusion with a guidewire is the most common cause of failed angioplasty. The Glidewire, a kink-resistant, flexible wire with a hydrophilic coating, was applied to 71 (59 total, 12 subtotal) refractory occlusions, resulting in an overall angioplasty success rate of 45%. The Glidewire may ...
Horner S M - - 1993
Percutaneous transluminal coronary angioplasty of coronary artery occlusions forms a routine part of cardiological practice. However, only a few angiographic variables which might predict success have been investigated and identified. Video densitometry was used to assess structural features of the occlusion that have not been investigated previously. The sharpness and ...
Patterson E - - 1993
The role of oxygen-derived free radicals as initiators of vascular dysfunction observed 24 hr after transient coronary artery occlusion (15 or 30 min) was examined in the anesthetized dog. A 15-min occlusion increased human serum (HSA) albumin extravasation within anterior myocardium without producing myocardial necrosis or edema. Minimal leukocyte uptake ...
Rosfors S - - 1993
Duplex ultrasound scanning was used to localise and classify aorto-iliac occlusive disease. The study included 76 consecutive examinations of 73 patients with signs suggestive of proximal occlusive disease either by history or from traditional non-invasive laboratory investigation. Duplex ultrasound scanning indicated the presence of significant proximal occlusive disease in 70/101 ...
Bernstein M - - 1993
We describe two patients who developed devastating strokes due to intracranial arterial occlusion 15 weeks and 97 weeks following high dose stereotactic iodine-125 brachytherapy for glioblastoma multiforme. In both cases the occlusion was within the implant volume at points receiving 110-281 Gy and there was no other evidence of significant ...
Denissen H W - - 1993
This paper presents a combination of several occlusal concepts designed to contribute to the successful use of maxillary dentures in opposition to osseointegrated mandibular prostheses. To ensure a positive outcome when designing such an occlusion, three factors must be considered: patient satisfaction, maxillary anterior bone preservation, and mandibular arch shortening. ...
Mathews D - - 1993
It is important to determine preoperatively which patients can tolerate permanent occlusion of a cervical internal carotid or cerebral artery when such a procedure may be necessary to treat cerebrovascular or neoplastic lesions. Here we report our experience in combining temporary intra-arterial balloon occlusion with concomitant cerebral blood flow imaging ...
Whyman M R - - 1993
A foreknowledge of impending femoral artery occlusion might allow prevention of a deterioration in ischaemia by percutaneous transluminal angioplasty (PTA) in the preocclusive stage. A window of opportunity exists before a femoral stenosis progresses to occlusion and its treatment by PTA becomes more difficult, riskier and associated with lower patency. ...
Katircio?lu S F - - 1993
BACKGROUND: Paraplegia after thoracic aortic aneurysm has an incidence of 2.2% to 24%. This study was planned to show the beneficial effects of prostacyclin on spinal cord ischemia. METHODS: Twelve rabbits underwent 30 minutes of aortic occlusion. Six rabbits received prostacyclin, whereas the remaining rabbits did not. Prostacyclin administration was ...
Yucel E K - - 1993
A prospective, blinded comparison of two-dimensional time-of-flight (TOF) magnetic resonance (MR) angiography and conventional arteriography was performed in 25 patients who underwent routine arteriography for symptomatic atherosclerotic occlusive disease of the lower extremity. MR angiography was performed from the distal abdominal aorta through the popliteal trifurcation. The native arterial tree ...
Gonschior P - - 1993
One hundred patients with symptomatic peripheral vascular disease were treated with a directional atherectomy catheter; 153 lesions comprising 98 stenoses and 55 occlusions were located in the iliac (n = 22), superficial femoral (n = 114), popliteal (n = 16), and anterior tibial (n = 1) arteries. The majority of ...
Simkhovich B Z - - 1993
BACKGROUND: This study investigated the effects of ischemic preconditioning on myocardial carnitine-linked metabolism and high-energy phosphates in the canine model of ischemia and reperfusion. METHODS: Anesthetized dogs underwent 1 hour of coronary artery occlusion and 4.5 hours of reperfusion. The dogs were randomly assigned to a control group (no intervention ...
Spengel F A - - 1993
The efficacy and safety of recombinant tissue-type plasminogen activator (rt-PA) was evaluated in 46 patients with thromboembolic arterial occlusions in leg arteries. rt-PA was given over 1-4 h with a maximum dose of 18 mg. The effect of rt-PA treatment was determined as patency of the occluded arteries in 44 ...
Shavell H M - - 1993
The maintenance of occlusal integrity has to be observed in all restorative procedures. The author of this article discusses the natural design of occlusion, diagnosis of the need for occlusal treatment, and the dentist/material/procedure interaction. Understanding those principles is the learning objective of this article.
Wray S H - - 1993
This review of acute visual failure covers the clinical manifestations and management of ocular strokes CRA occlusion, BRA occlusion and AION. The diagnostic process for each patient requires meticulous attention to: 1. Blood pressure, heart rate and rhythm, palpation of the temporal arteries, and auscultation of the heart, neck, eyes ...
Katsuragawa M - - 1993
OBJECTIVES: The purpose of this study was to examine the histologic-angiographic correlates of chronic total coronary occlusion and to explain why a tapering type of occlusion and short occluded segments are favorable for percutaneous transluminal coronary angioplasty. BACKGROUND: Coronary angioplasty is less successful for vessels with chronic total occlusion than ...
Spittell P C - - 1993
OBJECTIVE: to increase clinical awareness of the role of repetitive blunt trauma, often occupational, in the development of occlusive arterial disease of the hand. STUDY DESIGN: illustrative cases are presented to emphasize the varied etiology and clinical features of occlusive arterial disease of the hand resulting from repetitive blunt trauma ...
Butler L - - 1993
Acute arterial occlusion of the lower extremity occurs when blood supply from the lower limbs is abruptly cut off. Prompt evaluation and treatment are required to prevent irreversible damage. Differentiation between embolic and thrombotic sources is needed to initiate appropriate therapy. Although different types of occlusion require similar preoperative and ...
Näslund U - - 1993
OBJECTIVE: The aim was to investigate QRS vector changes during the first 30 min of coronary occlusion or the early phase of reperfusion with special reference to location and size of myocardium at risk. METHODS: 24 h experiments were performed in closed chest anaesthetised pigs. QRS vectors were studied by ...
Montorsi F - - 1993
Duplex and color Doppler sonography were used to assess 130 impotent patients and 8 potent controls. Cavernosal artery diameter, peak flow velocity and volume flow rate were evaluated at the level of the crura of the corpora cavernosa and 1 cm proximal to the corona penis. Potent controls and nonarteriogenic ...
Zeumer H - - 1993
A group of 59 patients with stroke due to acute vertebrobasilar or carotid territory occlusion have been treated by local intra-arterial fibrinolysis (LIF). A high recanalisation rate was accomplished with either urokinase or recombinant tissue plasminogen activator (r-TPA). However, with either substance, even if a high dose was used, recanalisation ...
van Adrichem L N - - 1993
Between November 1985 and November 1988 11 patients developed arterial occlusion after microvascular anastomoses, 10 patients venous occlusions and five combined arterial and venous occlusions. We undertook a retrospective study to see whether colour, capillary refill, thermometry, or laser Doppler measurements could distinguish arterial and venous occlusions. Neither skin thermometry ...
Kittnar O - - 1993
The aim of our study was to assess if repolarization BSPM were able to evaluate the site, size and severity of chronic ischaemic damages and if BSPM were in any way related to the regional attenuation of myocardial contractility or to the site of coronary artery occlusion. The BSPM were ...
Huang M H - - 1993
In order to further elucidate the regulatory function of canine epicardial neurons, the effects of transient coronary artery occlusion on their spontaneous activity was studied. Fifty-eight individual, spontaneously active units were identified by means of their action potential configurations in specific loci of atrial and ventricular epicardial fat of 10 ...
Kopchok G - - 1993
This report describes an occlusive canine iliac artery model for use in experimental angioplasty procedures. Lesions were induced by overdistending and breaking the internal elastic lamina of the artery and implanting a 2-cm long occlusive collagen plug. The collagen plug diameter was varied to fit the iliac artery and caused ...
Ueda S - - 1992
BACKGROUND AND PURPOSE: Epidemiological study of middle cerebral artery occlusion is important because the indication for extracranial-intracranial arterial bypass remains in dispute. To help clarify this issue, we investigated the prognosis of thrombotic middle cerebral artery occlusion in Japanese patients. METHODS: We studied 40 patients with thrombotic middle cerebral artery ...
Bellah R D - - 1992
In an infant with idiopathic arterial calcification of infancy, prenatal diagnosis of arterial calcification was made by ultrasonography and allowed initiation of therapy in utero. Etidronate therapy produced apparent radiographic and ultrasonographic improvement in the degree of vascular calcification but did not prevent the lethal progression of intimal vascular occlusive ...
Simonson T M - - 1992
OBJECTIVE: Permanent occlusion of the internal carotid artery may be required for en bloc resection of a neck tumor or to treat certain aneurysms. The risk of ischemic infarct is usually assessed with carotid balloon test occlusion and concurrent distal arterial pressure measurement. However, up to 20% of patients who ...
Murata T - - 1992
The role of reperfusion injury in the progression to necrosis in pulmonary embolism was evaluated. To simulate this condition, we used a technique that enables occlusion and reopening of the pulmonary arterial branch supplying the right upper lobe in conscious rats. The rats were divided into five groups: the occlusion ...
De Pauw M - - 1992
In a patient with weight loss and a systolic epigastric murmur, aortography demonstrated positional celiac axis occlusion. Color Doppler imaging of the celiac axis showed occlusion in the supine position, but patency was documented during deep inspiration and with the patient in the upright position. This report documents a rare ...
Kirkebøen K A - - 1992
The role of adenosine for reactive hyperemia in normal and stunned myocardium was examined in 16 open-chest barbiturate-anesthetized pigs. Interstitial adenosine concentration was reduced or enhanced by intracoronary infusion of adenosine deaminase or the nucleoside transport inhibitor R 75231, respectively. In normal myocardium, adenosine deaminase reduced volume of hyperemia (Doppler ...
Komiyama M - - 1992
The balloon occlusion test (BOT) of the internal carotid artery (ICA), combined with induced hypotension and cerebral blood flow (CBF) mapping, was carried out in three patients with a large or giant aneurysm of the ICA. Occlusion of the ICA for 10 minutes in the normotensive state was followed by ...
Khoda J - - 1992
Three young patients with an isolated popliteal artery occlusion are presented, two with severe claudication and the third with a critical ischaemic foot. The work-up of these patients leads to certain aetiologic possibilities: microtrauma, smoking and contraceptive pills. Two of our patients underwent thromboembolectomy, the third managed conservatively. The follow-up ...
Marx J L - - 1992
A 61-year-old woman developed acute bilateral dacryocystitis secondary to Staphylococcus aureus 3 weeks after undergoing punctal occlusion with thermal cautery for keratoconjunctivitis sicca. The dacryocystitis resolved with intravenous antibiotics, aspiration of the lacrimal sacs, injection of sulfacetamide into the lacrimal sacs, and bilateral dacryocystorhinostomy. Preexisting bilateral nasolacrimal duct obstruction was ...
Laine T - - 1992
The aim here was to determine the effects of particular types of malocclusion including the effects of combinations of different occlusal anomalies on speech articulation. Occlusal anomalies and articulatory speech disorders, a diagnosis based on errors in place of articulation, were determined for 451 students, mean age 23 years. The ...
Silva M B MB - - 1992
Acute aortic occlusion frequently occurs with catastrophic visceral, spinal, or lower extremity ischemia and is most often caused by embolic or thrombotic events in older individuals with known cardiovascular disorders. This case describes the rapid development of the clinical signs of acute aortic occlusion in a young and completely healthy ...
Linskey M E - - 1992
Balloon test occlusion of the internal carotid artery (ICA) is useful in preoperatively assessing the risk of temporary occlusion or permanent sacrifice of the carotid artery. The incidence of symptomatic complications from this procedure is 1.7%. The case is reported of a 57-year-old woman in whom a balloon test occlusion ...
Johnson D A - - 1992
To study the central neural mechanisms involved in malignant ventricular arrhythmia, concentrations of norepinephrine in the cerebrospinal fluid were measured during behavioral stimulation and during coronary artery occlusion. Pigs were instrumented via thoracotomy with catheters to measure mean arterial pressure and plasma catecholamines and with silk snares around the left ...
Chopra P S - - 1992
The authors attempted ureteral occlusion by means of heat application in nine ureters (24 sites) of New Zealand White rabbits with the electromagnetic field-focusing (EFF) device. The EFF device generates heat at the tip of a grounded probe by focusing eddy currents that have been induced within the tissues by ...
Vegh A - - 1992
OBJECTIVE: The aim was to determine the relationship of the duration of short coronary artery occlusions and of the reperfusion period to the extent of the antiarrhythmic effect of preconditioning. METHODS: A prolonged occlusion of a coronary artery in 102 anaesthetised rats and 55 anaesthetised dogs was preceded by a ...
Meyer F B - - 1992
A strategy for intraoperative cerebral protection is described in which intraoperative electroencephalography is used to titrate the level of inspired isoflurane given for anesthesia to obtain isoelectricity prior to temporary vessel occlusion during repair of difficult aneurysms. During temporary vessel occlusion, arterial blood pressure is maintained or increased with an ...
Warren B L - - 1992
Ischemia is one mechanism implicated in the pathogenesis of acute acalculous cholecystitis. Gallbladder specimen arteriography was performed to define the comparative status of cystic artery runoff in the macroscopically normal gallbladder (n = 10), in acute gallstone-associated cholecystitis (n = 10), and in acute acalculous cholecystitis (n = 7). Standardized ...
Waldner H - - 1992
Vascular mechanisms are not standard tools to induce acute pancreatitis. They are used for special purposes to investigate the pathophysiologic significance of circulatory changes in acute pancreatitis. Because of the rich collateral network, occlusion of the main pancreatic arteries induces no pathological change. Complete occlusion of the venous outflow induces ...
Sibbons P D - - 1992
Occlusion of groups of vessels in the mesenteric vascular arcades of distal ileum for 48 h induced necrotizing enterocolitis lesions in low birth weight, spontaneously delivered, neonatal piglets. Lesion severity increased with numbers of adjacent groups of vessels occluded and with proximity to the ileocecal junction. A previously undescribed feature, ...
Abel H - - 1992
Thrombotic and thromboembolic occlusions of arteries and veins represent acute and often life threatening complications requiring immediate therapeutic intervention. The most important clinical manifestations of vascular occlusions are myocardial infarction, peripheral arterial occlusion, pulmonary embolism, deep vein thrombosis and ischemic stroke. The logical approach for the treatment in these indications ...
Joyce J W - - 1992
Occlusive and aneurysmal diseases of the large vessels of the upper extremity are uncommon experiences in most practices. Yet, by utilizing basic principles learned in the lower extremity that emphasize proper historic and physical examination, and by the selective use of angiography, these problems can be delineated and effectively treated. ...
Takenoshita Y - - 1991
A new method for quantitative occlusal measurement is presented. In this study occlusal contact areas in 79 patients with or without temporomandibular joint symptoms were assessed from the simple wax bite. The area of occlusion has showed no distinct differences between the two groups. The occlusal contacts did not show ...
Odink H F - - 1991
Recanalization of 75 femoropopliteal arterial occlusions was attempted with either conventional percutaneous transluminal angioplasty (n = 28; mean occlusion length, 5.5 cm) or percutaneous laser-assisted angioplasty (PLA) (n = 47; mean occlusion length, 11.6 cm). Conventional recanalization was technically successful in 21 patients (mean occlusion length, 4.4 cm +/- 3.9) ...
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