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Results 651 - 700 of 758
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Myerowitz P D - - 1982
Since myocardial infarction is the major cause of perioperative and postoperative death following peripheral vascular surgery, an accurate method of screening for coronary artery disease in this group of patients is needed. Digital subtraction angiography (DSA) with the use of intra-arterial aortic root injection of contrast material was evaluated as ...
Hammer M - - 1982
The plasma arginine vasopressin concentration (pAVP) was measured in blood samples obtained from an internal jugular vein of 8 patients who underwent surgery for a carotid artery stenosis. Ten blood samples were taken with 1 min interval during the operation. Arterial pAVP was measured in 10 simultaneous samples from a ...
Lacombe P - - 1982
Left lower lobe collapse can be suspected in children on a frontal chest film when three or more peripheral left upper lobe vessels are seen end-on along the left heart border. The peripheral vascular changes are mainly due to the backward and downward displacement of the hilus. This "vascular nodule ...
Greenberg D J - - 1982
Three days after initiation of migraine headache therapy with ergotamine tartrate and propranolol, severe acute arterial insufficiency of the lower extremities developed in a 48-year-old woman who had been in general good health. Angiography revealed hypoplastic aortoiliac arteries, with tubular narrowing of the leg arteries. Lower extremity blood pressures rapidly ...
Johnston K W - - 1982
Over a 3-year period, 275 transluminal dilatations were performed for the treatment of peripheral arterial occlusive disease. The results have been evaluated prospectively using radiologic, clinical and noninvasive criteria. The cumulative success rates for all dilatations were 63 +/- 4% (mean +/- 1 standard error) at 1 year and 53 ...
Avolio A P - - 1982
Studies of pulsatile systemic arterial hemodynamics were conducted in 10 diamond python snakes to test the hypothesis that body shape--through spatial dispersion of peripheral reflecting sites--is an important determinant of impedance patterns and of pulse wave contour. Findings support the hypothesis. Flow patterns in the aortic roots were similar to ...
Schutt R C RC - - 1982
The identification and management of the orthopedic patient who has chronic arterial insufficiency is presented in four cases in which failure to appreciate marginal arterial supply led to major and costly complications. Every orthopedic surgeon treating elderly patients should be aware of these possibilities. After a through history and physical ...
Sung J P - - 1982
Percutaneous transfemoral or to a lesser degree the transaxillary catheterization for peripheral angiography is the procedure of choice by most radiologists. Under certain circumstances, however, these vessels may not be suitable or accessible for such studies. We have performed 330 translumbar aortograms and have found translumbar aortograms to be a ...
Arnoczky S P - - 1982
The microvascular anatomy of the medial and lateral menisci of the human knee was investigated in 20 cadaver specimens by histology and tissue clearing (Spalteholz) techniques. It was found that the menisci are supplied by branches of the lateral, medial, and middle genicular arteries. A perimeniscal capillary plexus originating in ...
Beckmann C F - - 1982
Reactive hyperemia occurs when an artery is temporarily occluded and the occlusion is then released. During a period of vascular occlusion, peripheral vascular dilatation develops distally, and is reversed only gradually after release of the occlusion. Reactive hyperemia was measured in the hind limbs of five mongrel dogs at different ...
Hillen B - - 1982
This paper reports on a mathematical model designed to study the hemodynamics of one posterior communicating artery and its afferent and efferent vessels. The variables in the model are the diameter of the posterior communicating artery, the resistance in the vertebral artery and the ratio of the two peripheral resistances. ...
Kim Y D - - 1981
The plasma catecholamine levels obtained simultaneously from radial artery (A), pulmonary artery (MV), brachial vein (PV), and coronary sinus (CS) were measured concurrent with hemodynamic determinations during coronary artery bypass graft (CABG) operations. Arterial catecholamine levels decreased after induction of anesthesia and increased after sternotomy; changes in veno-arterial norepinephrine (NE) ...
Ovenfors C O - - 1981
Computed tomography (CT) provides a noninvasive alternative to arteriography in detecting central pulmonary thromboembolism. It is uncertain, however, if smaller, more peripheral clots can be diagnosed by means of CT because of the low spatial resolution and the possible motion artifacts that result from long exposure time. The peripheral pulmonary ...
Sagi E - - 1981
Exchange transfusion using a peripheral artery and vein was carried out 18 times in 17 newborn infants. The arteries use to withdraw blood were the radial [13], the ulnar [3] an the posterior tibial [2]. Infusion of blood was carried out simultaneously through a peripheral vein. There was no mortality ...
Carter S A - - 1981
Bruits between epigastrium and popliteal fossae were found in 63% of 309 patients with arterial obstruction and in 7% of 149 patients without obstruction. In the former group, ankle systolic pressure at rest was abnormal in 85% of limbs with bruits, indicating a hemodynamic abnormality. In the majority of limbs ...
Barnes R W - - 1981
The Doppler ultrasonic velocity detector is the least expensive and most versatile instrument used to screen patients for peripheral arterial, cerebrovascular, and venous disease. The Doppler detector provides qualitative and quantitative estimates of arterial and venous flow velocity and segmental arterial pressure measurements. The device can become as clinically useful ...
Clifford P C - - 1981
The routine clinical use of pulsatility index (PI) in the quantitative assessment of Doppler blood velocity/time waveforms, was assessed in normals and in patients with leg ischaemia. Two thousand and five hundred common femoral artery waveforms were studied in 57 subjects (38 males, 19 females). PI values showed a mean ...
Johnston K W - - 1981
Accurate hemodynamic assessment of the severity of aorto-iliac disease has important implications in the management of patients with symptomatic peripheral arterial occlusive disease. This study has documented that history, clinical examination, and single-plane angiography are often unsatisfactory for assessing the hemodynamic significance of an aorto-iliac lesion. The use of oblique ...
Kuwana S - - 1981
Phrenic nerve discharges were recorded as an output of respiratory activity in anaesthetized, vagotomized cats immobilized by gallamine and artificially ventilated with room air. 2. With the carotid sinus nerve (c.s.n.) intact or denervated, PcO2 threshold levels (Pth, CO2) were determined at arterial pH, varied between 7.0 and 7.6 ([H+] ...
Kuhn G J - - 1981
The circulation time during closed chest cardiac compression was studied using Cardio-Green injected in either the right antecubital vein or right subclavian vein during CPR. Arterial blood was obtained from a right femoral arterial catheter at 30-second intervals for five minutes following injection. Six patients, in two groups, comprised the ...
Ericsson M - - 1981
The calcitonin secretion from the thyroid C-cells was studied with a peroperative method. The calcitonin concentrations in thyroid venous effluent and peripheral veins were determined in patients who underwent operations because of thyroid and parathyroid disease. In normocalcemia the thyroid vein level of calcitonin was significantly higher than that in ...
Shionoya S - - 1981
By means of a tracer technique with 99mTc-pertechnetate, provided with seven zonal regions of interest, 6 mm in width, placed at equal spaces of 18 mm, from the toe tip to the midfoot at a right angle to the long axis of the foot, arterial flow velocity in the foot ...
Westfall C T - - 1981
Mucocutaneous lymph node syndrome is a pediatric illness characterized by fever, conjunctivitis, oropharyngeal lesions, exanthem, peripheral edema, desquamation, and adenopathy. The entity has many possible complications, the most significant of which is coronary artery thrombosis and aneurysm. A rare but surgically important complication is hydrops of the gallbladder. In this ...
Kusaba A - - 1981
A prognostic flowmetric study on 80 reconstructed arteries of the lower extremity was carried out to assess the flow wave patterns detected using a bidirectional doppler flowmeter. In 21 of 80 arteries, changes in the flow wave pattern were noted. For 10 of 21 affected arteries, an immediate arteriography revealed ...
Turnipseed W D - - 1981
A unique method of computerized fluoroscopic enhancement allows direct visualization of the entire vascular system by intravenous injection of standard contrast agents, thereby avoiding the need for arterial puncture or hospitalization. This technique has been used to satisfactorily visualize the intra- and extracranial carotid and vertebral arteries, the aortic arch ...
Jurko A - - 1981
A case history is reported of a nine-years-old girl with a hypoplastic intrapulmonary vascular system and with multiple peripheral stenoses of the pulmonary artery. The clinical, laboratory, and X-ray symptoms of peripheral stenoses of the pulmonary artery are described. The haemodynamic effects of peripheral stenoses of the pulmonary artery on ...
Bartlett C M - - 1981
Adult Splendidofilaria caperata Hibler, 1964 were found in the tunica media of the pulmonary arteries of 21% of 341 crows (Corvus brachyrhynchos brachyrhynchos Brehm) wintering in southern Ontario, Canada. Microfilariae of S. caperata were not observed in the peripheral blood or in skin snips of infected crows. Microfilariae were rarely ...
Bell D D - - 1981
During the past decade, noninvasive vascular diagnostic instrumentation has expanded beyond expectation. The scope of the vascular laboratory has exceeded the initial requirements of the surgeon for diagnosis, while large scale screening for early or silent vascular disease has become a reality.27 Vascular surgeon and researcher alike are using these ...
Schulz W - - 1981
The purpose of the study was to distinguish between the peripheral and the cardiac mode of action of nifedipine, a drug which inhibits transmembrane calcium transport. To assess the cardiac and peripheral antianginal effect independently, two routes of application were employed: systemic intravenous and intracoronary infusion into the left coronary ...
Price R L - - 1980
Myxobolus microcystus sp. n. is described from the gills of the largemouth bass, Micropterus salmoides. Mean spore dimensions (in micrometers) are as follows: spore length 12.5; spore width 7.5; spore thickness 5.5; polar capsule length 6.5; polar capsule width 2.5; extended length of polar filaments 21 to 37; polar filaments ...
Pardy B J - - 1980
Severe extremity ischemia frequently cannot be relieved by surgical means and failure of current drug therapy may then result in prolonged disability or amputation. Prostaglandins E1 (PGE1) and I2 (prostacyclin, PGI2) are potent vasodilators and inhibitors of platelet aggregation which have been reported to be of value in the treatment ...
Johnston K W - - 1980
The authors review their experience over a 2-year period with transluminal arterial dilatation using the Grüntzig catheter. In 96 patients 136 aortoiliac or femoropopliteal arterial segments were dilated. The success rates at 1 year were 76% and 70%, respectively, for aortoiliac and femoropopliteal dilatations. The early and late results indicate ...
Hashway Thomas - - 1980
Real-time ultrasonic echo imaging of peripheral arteries promises to facilitate the management of selected patients with peripheral and extracranial arterial disease. This report outlines the technique of imaging the carotid system and portions of the arteries that supply the lower extremities. It also discusses the normal and pathologic anatomy of ...
Lee B Y - - 1980
A progressive increase in the incidence of peripheral arterial occlusive disease is being observed in today's steadily aging population. In recent years, a number of simple noninvasive vascular techniques have become available for the diagnosis of peripheral arterial occlusive disease. These techniques provide the physician with physiologic information about the ...
Drazen J M - - 1980
The pharmacologic activities of leukotrienes C-1 and D(LTC-1 and LTD), constituents of slow reacting substance of anaphylaxis (SRS-A), were evaluated in vitro on airway contractile tissues and in vivo on pulmonary mechanical function, mean systemic arterial pressure, and cutaneous microcirculation. In vitro both LTC-1 and LTD were potent and selective ...
Fei D T - - 1980
The present experiments have allowed the calculation of concentrations of angiotensin I, II, and III in arterial and central venous blood. Assuming that endogenous arterial angiotensin II and III are handled as reflected by exogenous infusion, it can be calculated that 55% of the steady state arterial concentration of angiotensin ...
Westerfield B T - - 1980
Pulmonary toxicity occurs after the administration of several different chemotherapeutic agents. Pulmonary toxicity due to melphalan alone has not been documented. In the patient we describe respiratory symptoms and pulmonary infiltrates developed twice within two weeks of the second course of a monthly melphalan and prednisone regimen. Open lung biopsy ...
Atwell R B - - 1980
Peripheral pulmonary arterial disease sometimes associated with immature filariae (larvae) was found in 5 dogs in which infestations of D. immitis were considered to be relatively recent. Gross and histological arterial lesions were similar to the endarteritis described in association with adult filariae. No adult filariae were associated with these ...
Lee B Y - - 1980
The need for noninvasive techniques capable of quantitating peripheral arterial insufficiency is becoming increasingly obvious. We have shown the technique of noninvasive elctromagnetic flowmetry to be capable of distinguishing three relatively discrete clinical zones by quantitating the peak pulsatile flow of blood through the thigh and calf. The obtained peak ...
Bonnabeau R C RC - - 1980
Fiberoptic bronchoscopy combined with concomitant fluoroscopic control in 36 cases, permitted visual access to larger portions of the main tracheaobronchial tree as well as the peripheral pulmonary parenchyma. The overall diagnostic, (positive, suspicious) rate in the entire series of 36 cases was 85%. Using this technique, the diagnostic yield (positive ...
Tada M - - 1980
To examine plasma levels of vasoconstrictive prostanoid (thromboxane A2) in patients with coronary artery disease, amounts of its product, thromboxane B2, in acidic lipid extracts from plasma were determined by a radioimmunoassay. Peripheral venous samples were obtained in 14 normal subjects and 12 patients with coronary artery disease, and simultaneous ...
AbuRahma A F - - 1980
One hundred and twenty-five patients received both lower limb arterial Doppler ultrasonics examinations and arteriographic tests. From the 250 limbs, 963 segments--iliofemoral, femoral, popliteal and popliteal trifurcation--were measured. Arteriography confirmed 649 of the 673 normal ultrasound results, while of the 290 abnormal ultrasound tests, 261 were documented by arteriography. Combining ...
Olinger G N - - 1980
Four instances of severe anaphylactoid reaction occurring subsequent to cardiopulmonary bypass are described. These catastrophic reactions, from which 2 patients died, took place approximately an hour following administration of protamine and were characterized by marked peripheral vasodilatation, loss of capillary membrane integrity, and fulminant noncardiogenic pulmonary edema. Primary cardiac depression ...
Campbell H C - - 1980
Management of arterial emboli occurring in patients having generalized arteriosclerosis presents a therapeutic challenge to the vascular surgeon. Adequate cardiac function must be vigorously supported. Perioperative metabolic alterations must be recognized and corrected. Continuous anticoagulation with heparin sodium appears indicated among such patients with coexisting peripheral arterial occlusive disease, stasis, ...
Schmidt-Lademann S - - 1980
The development of the intracerebral capillaries of the telencephalon was studied by the combined techniques of microangiography and histology in embryos and fetuses of cattle and pigs. In the telencephalic colliculi ganglionares, vascularization starts during the 4th week of gestation and leads to the formation of a peripheral and a ...
Neuhaus G - - 1979
Angiography examinations of the extracranial cerebral arteries in patients with peripheral occlusive disease of the lower limbs indicate cerebro-vascular disease more often than might be assumed from clinical-neurological examinations alone. In total, 61.5% of the patients examined showed lesions of the extracranial cerebral arteries which necessitated an operation. The elimination ...
DeBakey M E - - 1979
The history of vascular surgery and the developments that made it possible are briefly traced. Approaches to the treatment of arterial lesions are considered in terms of the characteristic anatomic, pathologic and clinical patterns of arteriosclerosis or atherosclerosis, the basic underlying lesion in most aneurysmal and occlusive diseases of the ...
AbuRahma A F - - 1979
We studied 150 arterial Doppler examinations on 150 patients by obtaining segmental pressures and the analogue wave tracings, and comparing the ankle/arm index to the arteriograms. Each limb was divided into iliofemoral, femoral, popliteal, and trifurcation segments. Of the 793 segments interpreted as normal by arterial Doppler, 758 were confirmed, ...
Kramann B - - 1979
Xeroradiography allows visualization of peripheral arteries after intravenous injection of relatively low quantities of contrast medium. By means of a special changer, several exposures are chosen according to standardized programs. Determination of the arrival time of the contrast medium after its passage through the heart and the lungs is not ...
Yeh H C - - 1979
Sixteen patients with various lesions involving the brachiocephalic arteries were studied ultrasonographically. The examination was very useful in diagnosing aneurysms of the peripheral arteries and in differentiating an aneurysm from other causes of palpable pulsatile masses, such as a tortuous artery and tumor beneath an artery. The ultrasound technique used ...
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