Search Results
Results 351 - 400 of 780
< 3 4 5 6 7 8 9 10 11 12 13 >
Koman L A - - 1998
Patients were evaluated before and after arterial reconstruction surgery (1) to define the physiology of the digital microcirculation in chronic subcritical ischemia, (2) to demonstrate the short-term effects of successful arterial reconstruction on microvascular flow, and (3) to document the effects of surgery on symptoms, function, and health-related quality of ...
Saouaf R - - 1998
RATIONALE AND OBJECTIVES: The authors compared the postocclusion hyperemic responses of the brachial artery after occluding blood flow proximal to and distal to the studied area. MATERIALS AND METHODS: Response of the brachial artery to hypoxia was evaluated with duplex Doppler ultrasound in 13 healthy subjects. A pneumatic tourniquet was ...
Noël B - - 1998
The case of a man exposed during 25 years to vibration while maneuvering a heavy earth moving tractor is reported. The first clinical manifestation of hand-arm vibration syndrome was a bilateral Raynaud's phenomenon followed five years later by digital necrosis. The arteriography revealed a proximal and bilateral ulnar artery occlusion. ...
Harrison M R - - 1998
BACKGROUND/PURPOSE: Fetuses with congenital diaphragmatic hernia (CDH) who have a "poor prognosis" with postnatal treatment now can be identified on the basis of liver herniation, early diagnosis (before 25 weeks' gestation) and a low lung-to-head ratio (LHR). Because complete in utero repair proved unsuccessful for this group, the strategy of ...
Saatci A O - - 1998
Etiological investigation of a 15-year-old boy with left ophthalmic artery occlusion led us to a diagnosis of neurofibromatosis type I as there were numerous large cafe-au-lait spots, axillary freckling, and brain MRI changes consistent with a hamartoma. In light of the present case, ophthalmic artery occlusion may be a rare ...
Nielsen V G - - 1998
BACKGROUND: Pulmonary injury occurs after vascular surgery, with xanthine oxidase (an oxidant generator) released from reperfusing liver and intestines mediating a significant component of this injury. Because halogenated anesthetics have been observed to enhance oxidant-mediated injury in vitro, the authors hypothesized that desflurane would increase alveolar-capillary membrane permeability mediated by ...
Wholey M H - - 1998
Our purpose was to study the effectiveness of thrombolytic therapy in treating acute, subacute, and chronic arterial occlusions in a multicenter retrospective study. Intraarterial urokinase infusion was performed in 235 patients for occluded native arteries. There were 70 (30%) with acute and 26 (5%) with subacute occlusions, and 141 (59%) ...
Kaps M - - 1998
Two patients with acute occlusion of the middle cerebral artery (MCA) were treated with intravenous alteplase. Neurovascular monitoring, which was performed simultaneously via transcranial sonography, enabled precise documentation of MCA recanalization. This information was used to tailor the dosage and duration of alteplase treatment. Sonographic information concerning the arterial segments ...
Rowan L J - - 1998
Occlusion of the palmar arch vessels is rare, but it can occur in athletes and workers who subject their hands to repeated blunt trauma or gripping activities. A case report examines a baseball player who presented with classic symptoms of hypothenar hammer syndrome (occlusion of the ulnar artery due to ...
Winet H - - 1998
Ischemic osteonecrosis is a complication of certain traumatic and a number of idiopathic conditions. The course of the disease may result in collapse of the convex member of a joint and osteoarthritis, often requiring arthroplasty. Increasing incidence in young adults poses a challenge for development of long-term joint prostheses. Current ...
Kolkman J J - - 1998
BACKGROUND: To review clinical features of the occlusive splanchnic ischaemia syndromes with special emphasis on the diagnostic value of tonometry. METHODS: The English literature was reviewed with an emphasis on papers concerning anatomy and physiology of splanchnic perfusion, the clinical presentation and diagnostic procedures in occlusive splanchnic ischaemia syndromes. RESULTS: ...
Munteanu I - - 1998
The profunda femoris artery, the main nutritive artery of the thigh, has a great surgical significance. The high frequency of the occlusive arterial disease in the lower limbs caused by atherosclerosis, imposes as main therapy the reconstructive surgery. Because the profunda femoris artery remains patient in most of the cases ...
Yamanaka T - - 1998
Since vertigo is known to be caused by vertebrobasilar arterial occlusive disease (ex. vertebrobasilar insufficiency; VBI), an electrophysiological study was performed to examine the effects of a unilateral vertebral artery (VA) occlusion on the neuronal activities of the medial vestibular nucleus (MVN) and vestibular ganglion (VG) in alpha-chloralose-anesthetized cats. Single ...
Khazim R R Centre for Spinal Studies and Surgery, University Hospital, Queen's Medical Centre, Nottingham, United - - 1998
We report a case of progressive thrombotic occlusion of the left common iliac artery in a 41-year-old woman after anterior interbody fusion, which initially presented only as a sensation of numbness. Diagnosis was delayed until complete arterial occlusion occurred 36 h after surgery. A sensory deficit may be the only ...
Celebić A - - 1997
Occlusal plane position was analysed cephalometrically in 35 Klinefelter adults (47,XXY) and compared with 60 eugnath control males (46,XY). The significantly smaller angles between the occlusal plane and the cranial base (NSL-OLs) and between the occlusal plane and the Frankfort horizontal plane (Fr-OLs) were obtained in 47,XXY males (P < ...
Schofer J - - 1997
OBJECTIVES: This study sought to elucidate the short-term efficacy and intermediate-term outcome of excimer laser recanalization of chronic coronary artery occlusions in patients in whom attempts at mechanical revascularization had failed. BACKGROUND: Recanalization of chronic coronary occlusions with the use of a mechanical guide wire fails in 30% to 50% ...
Barr J D - - 1997
Extradural aneurysms have distinct characteristics from their intradural counterparts. Most extradural aneurysms cannot be treated by direct surgical exposure and clip ligation or by direct endovascular means without parent vessel sacrifice. Arterial occlusion with or without bypass grafting remains the traditional treatment. Controversy about the "best" or "proper" technique of ...
Ariaudo S - - 1997
In the coronary circulation an ischaemic preconditioning obtained with two periods of 2.5 min each of occlusion of the left circumflex coronary artery alters the pattern of a coronary reactive hyperaemia which follows 15 s only of occlusion of the studied artery. The most remarkable change consists of a reduction ...
Sando K - - 1997
Occlusion of central venous access devices (CVADs) is not an uncommon problem duringlong-term parenteral nutrition. A number of techniques have been developed to deal with obstructed CVADs. This study investigated the effectiveness of the sodium hydroxide (NaOH) lock method for gradual CVAD occlusion. When a progressively declining flow was noticed, ...
Graves V B - - 1997
PURPOSE: To determine the clinical effectiveness of parent artery occlusion of the carotid or vertebral artery by means of temporary proximal flow arrest and microcoils. METHODS: Nineteen parent artery occlusions (15 carotid, four vertebral) were performed in 19 patients who successfully passed a balloon test occlusion. In these patients, endovascular ...
Vroegindeweij D - - 1997
PURPOSE: In this prospective study we investigated the site, occurrence, and development of stenoses and occlusions following recanalization of superficial femoral artery occlusions. METHODS: Recanalization of an occluded femoropopliteal artery was attempted in 62 patients. Follow-up examinations included clinical examination and color-flow duplex scanning at regular intervals. Arteriography was used ...
Knauth M - - 1997
PURPOSE: To study the ability of CT angiography to show intracranial arterial occlusion and collateral blood flow in patients with acute stroke. METHODS: Twenty-one patients with acute nonhemorrhagic stroke were studied prospectively with conventional CT, CT angiography, and digital subtraction angiography. On the basis of CT angiographic findings, two neuroradiologists ...
Raskas D S - - 1997
This case report describes a rare but treatable complication of anterior lumbar surgery. The patient underwent a revision anterior fusion from L2 to S1. Complete thrombotic occlusion of the left iliac artery developed in the patient. Prompt recognition of vascular compromise and arterial bypass of the iliac system lead to ...
Schneweis S - - 1997
OBJECTIVES: An endovascular carotid balloon occlusion test with continuous intracranial monitoring by transcranial Doppler sonography was performed in 55 patients for prediction of tolerance of a required permanent occlusion of the carotid artery. METHODS: Blood flow velocities of the ipsilateral middle cerebral artery during occlusion were recorded and compared with ...
Setoguchi M - - 1997
Aortoiliac occlusion due to atherosclerosis is known to occur in elderly people. Two unique cases are documented here in which aortoiliac occlusion was observed in young men. These patients had no identifiable risk factors for developing atherosclerotic thrombosis except for the lupus anticoagulant, an immunoglobulin associated with thromboembolic episodes. Although ...
Hobo S - - 1997
The condylar path, the incisal path, and the cusp angle determine the amount of disocclusion during eccentric movement. In prosthodontics, the condylar path has been used as the main determinant of occlusion. However, the method to derive the incisal path and cusp angle from the condylar path is not known, ...
Vallbracht C - - 1997
In chronic coronary occlusions the chance of successful reopening by angioplasty can be judged from the age of the occlusion. Often, however, time since occlusion cannot be accurately assessed. Therefore we determined whether the chance of reopening can be predicted from angiographic morphology. In cineangiograms from 60 consecutive patients with ...
Bishop M - - 1997
The purpose of this study on 19 edentulous patients was to compare the retruded jaw relations recorded on wax rims at the registration stage with those recorded on finished dentures at insertion. An intra-oral centre-point trace served as the reference point for both sets of measurements. Results showed the two ...
Mitra A - - 1997
To investigate the mechanisms responsible for the accelerated radioaerosol transalveolar clearance rates caused by acute balloon occlusion of the pulmonary arterial tree in dogs, the effects of vagal tone (n = 5) and prostaglandins (n = 21) including thromboxane were evaluated. In 15 animals, serial pulmonary arterial and aortic blood ...
Urbach H - - 1997
Local intra-arterial fibrinolysis (LIF) is considered to support spontaneous recanalisation, which does not usually occur fast enough to prevent an infarct. Therefore, LIF may, at least theoretically, be especially useful in occlusions with large thromboembolic masses. We report our experience of LIF with urokinase in 12 patients with combined occlusions ...
Delacrétaz E - - 1997
Patients with a coronary artery occlusion are more likely to be revascularized surgically or to be treated conservatively than patients without occlusion. A higher prevalence of patients with multivessel coronary artery disease (CAD), particularly with 3-vessel CAD, in the group with occlusion may account in part for this difference in ...
Byrne D - - 1997
Limb ischemia, both acute and chronic, presents a risk to life and limb with mortality rates from 3% to 37% and amputation rates of the same range. Our experience with urokinase thrombolysis as the initial therapy for acute and non-acute ischemic extremities over 57 consecutive cases of native arterial occlusion ...
Mori T - - 1997
Although it is controversial whether total occlusions of intracranial arteries can safely be opened by angioplasty, we treated six patients with total occlusions of the middle cerebral artery by percutaneous transluminal cerebral angioplasty (PTCBA) in the chronic stage after a stroke, on average 10 weeks. We successfully opened four total ...
Minjarez D A - - 1997
Arterial thromboembolic disease almost always occurs in the setting of significant cardiovascular disease. Fewer than 10% of patients have no known etiology and only rarely is malignancy implicated. A review of the literature revealed only one prior report associated with a gynecologic malignancy, and this occurred in the lower extremities ...
Fukahori M - - 1997
STUDY OBJECTIVE: To observe (1) whether the reperfusion is one of the causes underlying the development of diffuse alveolar injury following pulmonary embolism, and (2) whether polymorphonuclear leukocyte (PMN) accumulation occurs in the reperfused lobe, and (3) whether the production of superoxide is increased from cells obtained by BAL. DESIGN: ...
Ohira T - - 1997
We describe the case of a 71-year-old man with calcium pyrophosphate dihydrate crystal deposition disease who developed acute popliteal artery occlusion immediately after total knee arthroplasty. Reperfusion was achieved thanks to the early diagnosis and thrombolytic therapy with urokinase. Arterial occlusion occurring after total knee arthroplasty is a rare but ...
Bergmans M G - - 1997
To study the relationship between arterial PCO2 (PaCO2) and transcutaneous PCO2 (tcPCO2) intermittent 2-min total umbilical cord occlusions were performed with a 3-min interval (n = 12) in 5 fetal sheep, tcPCO2 was measured continuously. Arterial acid-base balance was analyzed at the end of occlusion periods and at the end ...
Jia Z Q - - 1997
To investigate the role of arterial occlusion on temperature homogeneity during hyperthermia for deep seated tissue, a renal hyperthermia animal model has been established using New Zealand white rabbits. The effects of ultrasound-induced renal hyperthermia, with or without continuous and intermittent renal artery occlusion, were compared and analysed. Both continuous ...
Bergmans M G - - 1997
In an acute fetal lamb model the relation between arterial PCO2 (PaCO2), transcutaneous PCO2 (tcPCO2) and pH was studied at different conditions of stress. Occlusion of the maternal common iliac artery for 8 min, umbilical cord obstruction for 5 min and placental embolization were performed subsequently, every time with an ...
David C A - - 1996
Temporary arterial occlusion has been routinely used as an adjunct in intracranial aneurysm surgery. This has commonly been performed using a protocol of multiple short periods of occlusion alternating with periods of restoration of normal circulation. Recently, the logical basis of this method has come under scrutiny. There is extensive ...
Macchi C - - 1996
The collateral circles and their hemodynamic significance in distal lower limb arterial occlusion have been described in an elderly population. Overall 40 subjects (20 men and 20 women; age range 66-83) with symptomatic lower limb arteriopathy (Fontaine's stage II) have been studied combing Contrast Angiography and Color Doppler Echography of ...
Breen P H - - 1996
To test how large pulmonary embolism changes non-steady state CO2 kinetics, the right pulmonary artery (RPA) was occluded in 5 anesthetized, ventilated, thoracotomized dogs. By 1 min after RPA occlusion, CO2 volume exhaled per breath (VCO2,br) decreased from 9.3 +/- 2.8 to 7.0 +/- 2.6 ml and end-tidal PCO2 (PETCO2) ...
Miyabe M - - 1996
Magnetic resonance water diffusion imaging can detect early ischemic changes in stroke. Using a middle cerebral artery occlusion model, we examined which range of values of the orientation-independent diffusion quantity Dav = 1/3Trace(D) = 1/3(Dxx + Dyy + Dzz) is an early noninvasive indicator of reduced cerebral perfusion and focal ...
Bassett G - - 1996
STUDY DESIGN: The results of preoperative selective spinal angiography were compared with intraoperative occlusion of segmental arteries and somatosensory-evoked potential monitoring during anterior spinal surgery. OBJECTIVES: To determine if temporary occlusion of major radicular vessels supplying the spinal cord would result in intraoperative somatosensory-evoked potential changes. SUMMARY OF BACKGROUND DATA: ...
Lee D H - - 1996
PURPOSE: To determine whether color Doppler flow imaging with the use of slow-flow sensitivity improves sensitivity and specificity in the differentiation of occlusion and near occlusion of the internal carotid artery. METHODS: Color Doppler and duplex sonography were performed in symptomatic patients who had angiographically confirmed occlusion and/or near occlusion ...
Suzuki S - - 1996
To clarify the angiographic findings in patients with Buerger disease and to elucidate the relationship between the angiographic findings and the clinical prognosis, 144 angiographic images of the lower extremities of 119 patients with Buerger disease have been studied. The present study has included patient data in our previous report. ...
Hess H - - 1996
OBJECTIVE: To study the efficacy and risks of local thrombolytic therapy of peripheral arterial occlusions using rt-PA. DESIGN: This open study was performed in one clinic in Munich, Germany. METHODS: 288 patients suffering from occlusions of the lower limb arteries were subjected to 336 treatments performed with a permanently controlled ...
Braithwaite B D - - 1996
Intraarterial thrombolysis is used increasingly for management of arterial and bypass graft occlusions. Current research has been directed at the indications for and methods of catheter-directed thrombolysis. Streptokinase, urokinase, and tissue plasminogen activator (t-PA) are the most commonly used agents. They are administered by a variety of techniques and in ...
Purdy P D - - 1996
PURPOSE: To determine whether transient ischemia can be separated from permanent ischemia via calcium 45 autoradiography and to assess the applicability of dual isotope single-photon emission CT (SPECT) in the evaluation of cerebral blood flow. METHODS: We examined calcium influx in 12 dogs (group A) by using whole-brain calcium 45 ...
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, ...
< 3 4 5 6 7 8 9 10 11 12 13 >