Search Results
Results 651 - 700 of 784
< 6 7 8 9 10 11 12 13 14 15 16 >
Gottlob R - - 1985
2 types of incomplete arteriovenous flow reversal were tested. When the major arteries were patent, 20% of the blood shunted into a peripheral vein was drained via the arteries whereas 80% was drained via the veins of the leg. If the pressure in the arteries was raised, the flow through ...
Cooke E D - - 1985
A procedure for assessing the peripheral vasculature and a new technique for determining the characteristics of the a.c. (arterial) photoplethysmographic (PPG) waveform are described. Comparing 12 normal female volunteers and 12 female patients with Raynaud's phenomenon, PPG amplitude is as good as the results of a standard thermographic test in ...
Yashiro N - - 1984
Intraarterial digital subtraction angiography (IADSA) of peripheral arteries with isotonic contrast material, which was prepared by diluting meglumine amidotrizoate (65% Angiografin), was performed in ten patients. In six, both IADSA and conventional screen-film arteriography were performed for comparison. Painless peripheral arteriography was achieved by IADSA with isotonic contrast material. Five ...
Reynolds J R - - 1984
Twenty-nine patients with peripheral vascular disease had the popliteal artery segment assessed by xeroangiography and nuclear magnetic resonance (NMR) scanning. The result of each test was compared with conventional contrast arteriography. Nuclear magnetic resonance and xeroangiography correctly predicted popliteal artery patency in 97% and 100% of limbs, respectively, and occlusion ...
Bugiardini R - - 1984
To study the effects of sampling through cardiac catheters on indices of platelet function, we measured the levels of platelet factor 4 (PF4), beta thromboglobulin (BTG), and platelet aggregate ratio (PAR) in 10 patients with atrioventricular accessory pathway (AVNAP), six patients with primary pulmonary hypertension (PPH), and six patients with ...
Kurtz K J - - 1984
Dynamic auscultation, defined as physiologic or pharmacologic maneuvers that alter cardiovascular sounds in predictable ways, is increasingly practiced in cardiac physical diagnosis. Dynamic maneuvers applicable to peripheral arterial sounds have also been described and deserve wider application since arterial occlusive disease is encountered frequently. These little-known maneuvers alter blood flow ...
Kram H B - - 1984
The present report discusses the use of transcutaneous oxygen (PtcO2) monitoring in the perioperative management of a patient with two major peripheral arterial occlusions secondary to blunt trauma, during the performance of an external iliac artery thrombectomy and distal popliteal artery embolectomy. The injured limb PtcO2 was extremely low before ...
Saddekni S - - 1984
Small-volume right atrial injections of contrast material (25 ml) delivered at a high rate (30-35 ml) were routinely performed for digital subtraction angiography in 232 studies (698 injections). Excellent opacification of the aorta and peripheral arteries was consistently obtained. Superior opacification following right atrial injections compared with peripheral or superior ...
Reinstein L - - 1984
This report presents the first description of direct peripheral nerve compression as a complication of brachial artery-basilic vein vascular access in patients with uremia who are receiving long-term hemodialysis. Three patients are presented. An expanding basilic vein hematoma compressed the radial nerve in one patient. A graft associated abscess adjacent ...
Petermans J - - 1984
We measured the ankle pressure ratio (IPs) with the Doppler in a series of 261 subjects, mean age 80.6 +/- 5.3 years. The values of IPs has been distributed in three groups: IPs less than 0.9 related to an obstructive peripheral arterial disease, 2 greater than IPs greater than 0.9 ...
Levy J M - - 1984
A woman was admitted after ergotamine tartrate overuse for migraine headaches and her symptoms of arterial vasospasm were treated with PGE1, the first reported use of the vasodilator for ergot intoxication. The advantages of producing local vasodilatation without systemic effect, as well as inhibiting the formation of arterial microthrombi, suggest ...
Green J - - 1984
(Fig. 1) Cholemia per se (i.e. independent of parenchymal liver damage) causes a profound disturbance of systemic hemodynamics. This includes decrease in total peripheral vascular resistance, and possible impairment of left ventricular performance. These, in turn, lead to a decrease in effective blood volume, a tendency to hemorrhagic shock and ...
Osborne D - - 1984
A systematic evaluation of the fissures, segmental bronchi and arteries, bronchopulmonary segments, and peripheral pulmonary parenchyma was made from computed tomographic (CT) scans of 50 patients with normal chest radiographs. Seventy percent of the segmental bronchi and 76% of the segmental arteries were identified. Arteries could be traced to their ...
Johnston K W - - 1984
Currently, there is no agreement as to the best method for quantifying Doppler ultrasound recordings from peripheral arteries in order to detect occlusive disease. The four methods assessed in this study are: the pulsatility index, height-width index, path length index, and a Laplace transform function index. Recordings of the Doppler ...
Eisenberg D - - 1984
A peripheral pulmonary artery aneurysm appeared as a solitary, smooth and discrete coin lesion in the lung. The aneurysm was surgically resected. Various etiologies possibly responsible for this entity are discussed. The complications of transthoracic needle aspiration biopsy are reviewed, with emphasis on the hazards of puncturing a vascular lesion, ...
Verstraete M - - 1984
The vast majority of patients with peripheral arterial insufficiency have degenerative lesions in large arteries; however, collateral circulation develops in smaller arteries and arterioles. Vascular disorders affecting arterioles are idiopathic Raynaud's disease and systemic sclerosis. The pathogenesis of Raynaud's phenomenon is still poorly understood. There is some evidence that systemic ...
Møller B N - - 1983
In 46 amputations performed on account of peripheral occlusive arterial disease, the morphine puncture test (MPT) and the local skin perfusion pressure measurement (SPP) were carried out preoperatively. Below-knee (BK) amputation was performed when the SPP was greater than or equal to 40 mm Hg unless clinical criteria indicated otherwise. ...
Salomonowitz E - - 1983
The authors describe a modified form of isobutyl-2-cyanoacrylate (IBCA) which has been mixed with less than or equal to 4% w/w of nitrocellulose. Transcatheter embolization was carried out in rabbits and dogs without complications. The glue was readily injectable without balloon catheters. Because of its delayed polymerization, it was carried ...
Grosjean O - - 1983
The authors compare Doppler and arteriography in aorto iliac obstructive disease. Correlation is high and Doppler combined with induced hyperemia gives highly valuable hemodynamic information which are missed at arteriography. In unilateral iliac lesions, surgery could be planed without further arteriographic investigations. In a group of thoroughly investigated patients submitted ...
Ericsson M - - 1983
The effect of secretin on calcitonin secretion from the human thyroid gland was studied in 15 patients undergoing thyroid and parathyroid surgery. Secretin was administered into the inferior thyroid artery at two different doses (0.75 and 7.5 CU) and into a peripheral vein at a dose of 75 CU. Blood ...
Flury K E - - 1983
Ammonia is an important chemical in industry. Accidental inhalation of ammonia has resulted in upper airway and bronchoalveolar injury, and even fatal inhalation of anhydrous ammonia has occurred. We present herein a 5-year follow-up on a patient who had no prior history of smoking or pulmonary symptoms and had overwhelming ...
David A S - - 1983
It is traditional in renal units to check patients' biochemical parameters pre- and postdialysis. When a single-needle system is used, the blood is obtained through the arterial limb of the Y cannula, thus avoiding an extra venipuncture. The pre-sample is taken immediately after the cannula is inserted and the post-sample ...
Kenny P - - 1983
The pattern of phasic pressure and flow in an artery is related to the components of the impedance of that artery and hence to its compliance. Phasic patterns of velocity in peripheral arteries have been recorded by using continuous wave ultrasound Doppler flowmeters coupled to high-speed spectrum analysers; this has ...
Lozman H - - 1983
Colorectal surgery performed with patients in the lithotomy position resulted in acute limb ischemia due to thrombosis of unrecognized peripheral aneurysms. A search of the literature failed to find this complication reported. It is postulated that the mechanism of injury is due to calf compression in the lithotomy position and/or ...
Funk W - - 1983
Spontaneous changes of diameter in small arteries and arterioles were studied in the hamster skin fold chamber preparation, which allows to observe the microcirculation without acute exposure and anesthesia. Continuous measurements of diameter were made when the preparation appeared to be physiologically normal according to preset criteria. 89% of the ...
Perloff J K - - 1983
Examination of the heart and circulation includes five items: 1) the patient's physical appearance, 2) the arterial pulse, 3) the jugular venous pulse and peripheral veins, 4) the movements of the heart--observation, palpation and percussion of the precordium, and 5) auscultation. This report deals with specific examples that relate cardiac ...
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 ...
< 6 7 8 9 10 11 12 13 14 15 16 >