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Results 251 - 300 of 365
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Manier G - - 1988
Pulmonary gas exchange in Andean natives (n = 8) with excessive high-altitude (3,600-4,200 m) polycythemia (hematocrit 65.1 +/- 6.6%) and hypoxemia (arterial PO2 45.6 +/- 5.6 Torr) in the absence of pulmonary or cardiovascular disease was investigated both before and after isovolemic hemodilution by use of the inert gas elimination ...
Kruger F J - - 1988
Schistosoma hippopotami were collected from the right heart chambers and pulmonary arteries of Hippopotamus amphibius culled in the Kruger National Park. The schistosomes were subjected to scanning electron microscopy as well as optical microscopy. The results indicate that S. hippopotami is not conspecific to S. mansoni as suggested in the ...
McLellan I - - 1988
A case is described where prophylactic high frequency jet ventilation through a percutaneous transtracheal cannula was performed. This guaranteed adequate ventilation of a patient who was known to be difficult to intubate, enabling a paralyzing dose of succinylcholine to be given and intubation to be performed safely in a well ...
Chrysanthopoulos C - - 1988
Two patients with history of amiodarone-induced pulmonary reactions were accidentally treated again with amiodarone and the pulmonary complication recurred. The clinical symptoms and radiographic findings disappeared after amiodarone was discontinued and the administration of corticosteroids. Recurrent pulmonary reaction from amiodarone on different occasions is a rarely reported complication and confirms ...
Kannan N - - 1988
The non-ortho chlorine substituted coplanar polychlorinated biphenyls (PCBs), namely, 3,3',4,4'-tetra-(T4CB), 3,3'4,4',5-penta-(P5CB), and 3,3',4,4',5,5', hexachlorobiphenyl (H6CB) are found to be the most toxic congeners of PCBs eliciting toxic and biological responses typical of 2,3,7,8-tetrachloro dibenzo-p-dioxin (T4CDD). Analyses of human adipose tissues for these congeners revealed 94-860 pg/g of T4CB, 120-730 pg/g ...
Räsänen J - - 1988
We designed a ventilation-perfusion index (VQI) to estimate venous admixture (Qsp/Qt) in a real-time fashion by simultaneous pulse and pulmonary artery oximetry in 17 patients with acute respiratory failure. Changes in Qsp/Qt were produced by altering the level of continuous positive airway pressure. VQI correlated well with Qsp/Qt (r = ...
Prediletto R - - 1988
The mechanisms by which the disturbances of gas exchange develop in human pulmonary embolism are unknown. We investigated whether the inequality of ventilation-perfusion ratio is associated with the abnormalities of pulmonary gas exchange as evaluated by two different computerized techniques. We measured the alveolar to arterial gradients of oxygen and ...
Zucker P K - - 1987
Bleomycin has been associated with pulmonary toxicity which is typically manifested as an interstitial pneumonitis resulting in fine, diffuse reticular or reticulomicronodular infiltrates. Attention is drawn to an additional radiologic appearance where discrete pulmonary nodules are seen and representative of bleomycin-induced change. The pitfalls of interpreting such changes as toxic ...
Wittmann J - - 1987
Chick embryos were treated on day 17 of incubation with 32.8 mumol thiourea or 18.9 nmol L-thyroxine. As was already known from previous studies, hatching was delayed and accelerated, respectively, under these conditions. The premature induction of hatching by L-thyroxine was accompanied by an advanced development of the pulmonary structure ...
Granger W M - - 1987
An assumption of the classical three-compartment lung model is that the physiologic shunt fraction (Qs/Qt) remains constant with changes in cardiac output (Qt). As a result, when Qt decreases, both the arterial O2 tension (PaO2) and the mixed venous O2 tension (PvO2) must also decrease. Yet observations in intact dogs ...
Vincken W - - 1987
Despite increased alveolar ventilation, positive-pressure ventilation (PPV) reproducibly resulted in less efficient arterial oxygenation as compared to diaphragmatic pacing in a quadriplegic patient with respiratory paralysis. Volume loading acutely restored arterial oxygenation during PPV. This report emphasizes the important interaction between the cardiovascular and pulmonary systems in effecting gas exchange, ...
Scuderi G - - 1987
Fifty patients whose surgical approach violated the arterial geniculate circulation to the patella were evaluated to determine the subsequent effect on patella viability. Comparative postoperative radionuclide scans in 100 knees, 50 control and 50 surgical, revealed an avascular insult in only 7 knees (14%). It appears that the intratendinous circulation ...
Katkov V E - - 1987
The effects of the tilt test (at 60-70 degrees for 20 min) and LBNP test (at -30 and -60 mm Hg for 20 min each) on the basic parameters of central circulation (15 test subjects) and coronary circulation (11 test subjects) were investigated. The study was performed using thermistor-equipped catheters ...
Heymann M A - - 1987
The action and interaction of many products of arachidonic acid metabolism can affect the pulmonary circulation in the perinatal period. The rapid increase in pulmonary blood flow with the onset of ventilation likely is brought about to a large degree by the production locally of prostaglandin I2 (PGI2). This can ...
Nalos P C - - 1987
Amiodarone therapy for cardiac arrhythmias is increasingly being recognized to be associated with pulmonary toxicity. In this report, we describe the case histories of four patients with previously diagnosed amiodarone pulmonary toxicity in whom the adult respiratory distress syndrome developed after cardiothoracic operations for malignant ventricular arrhythmias. Three patients underwent ...
Reading R - - 1987
A child with idiopathic pulmonary haemosiderosis for three years required three monthly transfusions. Circulating avian, gliadin, and reticulin antibodies suggested the diagnosis of gluten enteropathy, and jejunal biopsy showed subtotal villous atrophy. During 15 months on a gluten free diet his growth and behaviour improved and he required no transfusions.
Derksen F J - - 1987
We assessed the effect of aerosol Micropolyspora faeni challenge in two groups of ponies by measuring lung function, airway reactivity to aerosol histamine, and bronchoalveolar lavage fluid cytology. One group of ponies was sensitized by subcutaneous injection of M. faeni in complete Freund's adjuvant, and the other group served as ...
Mortimer A J - - 1987
The arterial to end-tidal PCO2 difference (PaCO2-PE'CO2) was measured in five anaesthetized dogs during controlled ventilation at 0.25 Hz (15 b.p.m.) and during high frequency jet ventilation at 1, 3 and 5 Hz. Because of the slow response of the infra-red carbon dioxide analyser, satisfactory recordings of end-tidal carbon dioxide ...
Bugge J - - 1987
The carotid circulation pattern in gundis (Ctenodactylidae) is examined and compared with that of typical members of the classical rodent suborders. On this basis their probable phylogenetic relationships and systematic position are discussed. Together with other recent investigations, the unique pattern of cephalic arterial supply emphasizes the isolated position of ...
Morin F C FC - - 1986
This study was designed to determine whether the effects of hyperventilation on the pulmonary circulation of the newborn lamb were 1) due to mechanical factors or to respiratory alkalosis; and 2) mediated by prostaglandins. Six control lambs were studied during normal ventilation and during hyperventilation with, and without, decreased carbon ...
Sundt T M TM - - 1986
The authors report their experience with the use of saphenous vein bypass grafts for treating advanced occlusive disease in the posterior circulation (77 patients, all of whom had failed medical management and showed severe ischemic symptoms), deteriorating patients with giant aneurysms of the posterior circulation (nine patients), progressive ischemia in ...
Solway J - - 1986
We assessed the roles of the pulmonary and bronchial circulations as potential heat sources to the pulmonary airways during respiratory heat loss, by observing the changes in airstream temperature that accompanied temporary occlusion of the pulmonary or bronchial circulations. Baseline end-expiratory and end-inspiratory airstream temperatures were 35.4 +/- 0.2 degrees ...
Henriksen J H - - 1986
Pulmonary plasma kinetics of endogenous noradrenaline (NA) and tritium labelled L-noradrenaline (3H-NA) was studied in fifteen subjects during pulmonary arterial catheterization. Plasma NA concentration in femoral artery ranged from 0.5 to 8.2 nmol l-1, mean 2.3 nmol l-1, which was not significantly different from that of age-matched control subjects. The ...
Schertel E R - - 1986
Recently Green et al. (J. Appl. Physiol. 57:562-567, 1984) reported that pulmonary C-fibers initiate the prompt apnea evoked by pulmonary arterial injections of capsaicin; however, their role in the subsequent rapid shallow breathing of the pulmonary chemoreflex is still in dispute. To determine whether this reflex tachypnea is triggered by ...
Hoelzer K L - - 1986
Two of 33 patients entered in a local pilot study of mitomycin, vinblastine, and cisplatin for non-small cell lung cancer developed vinblastine-associated pulmonary toxicity. As with other reports of vinca alkaloid-related pulmonary toxicity, the regimen included mitomycin. Based on these cases and others previously reported, the incidence of abrupt pulmonary ...
de Smet J M - - 1986
To date, 12 cases of primary leiomyosarcomas of the pulmonary artery have been described in the literature. In only 3 instances was a surgical treatment attempted. We describe a patient with pulmonary artery leiomyosarcoma presenting in obstructive shock. Surgical excision under extracorporeal circulation allowed temporary relief, but the patient died ...
Bancalari E - - 1986
Bronchopulmonary dysplasia has become the most common pulmonary sequelae in neonates receiving mechanical ventilation. The pathogenesis of BPD is multifactorial, but prematurity, positive pressure ventilation, oxygen toxicity and pulmonary edema are some of the most important factors in its development. By minimizing these factors, it is possible to reduce the ...
Hastings R H - - 1986
Gas exchange in avian lungs is described by a cross-current model that has several differences from the alevolar model of mammalian gas exchange [e.g., end-expired PCO2 greater than arterial PCO2 (PaCO2)]. Consequently the methods available for estimating effective ventilation and physiological dead space (VDphys) in alveolar lungs are not suitable ...
Gaba S - - 1986
Pulmonary human vasomotor effects of purine nucleotides are unknown. We compared hemodynamic and gasometric effects of ATP vs ADO, using equimolar infusion rate, on 18 chronically hypoxemic COPD patients. ATP infusion (1 and 2 micro Mole per kilo over 20 min) induced pulmonary vasodilation, with a significant decrease of Ppa ...
Albert R K - - 1985
We continuously weighed fully distended excised or in situ canine lobes to estimate the fluid filtration coefficient (Kf) of the arterial and venous extra-alveolar vessels compared with that of the entire pulmonary circulation. Alveolar pressure was held constant at 25 cmH2O after full inflation. In the in situ lobes, the ...
Wood D L - - 1985
Use of amiodarone, an investigational antidysrhythmic agent, has been associated with cases of pulmonary toxicity. The mechanism of amiodarone pulmonary toxicity is unknown, and recommendations for the assessment and treatment of patients with this condition continue to evolve. In two patients with clinically diagnosed amiodarone pulmonary toxicity, a rapidly progressive ...
Eiser A R - - 1985
This review concerns the alterations in pulmonary gas exchange during hemodialysis and peritoneal dialysis. The occurrence of hypoxemia during hemodialysis has led to numerous studies that now provide sufficient data to explain this complex phenomenon. The role of substrate metabolism during hemodialysis and peritoneal dialysis are explored as it relates ...
Hui K Y - - 1985
The potential use of a fibrin-specific monoclonal antibody-64C5 as a thrombus detecting agent was examined in a quantifiable extracorporeal circulatory model using the chicken. This species was selected because antibody-64C5 did not cross-react with chicken fibrin. Human fibrinogen was clotted with human thrombin and factor XIII on filter paper disks, ...
Kashimura M - - 1985
Spleens of normal structure were obtained in surgery on nine patients with gastric cancer. The freeze-cracked surfaces of the organ as well as the vascular casts of methacrylate resin were examined by scanning electron microscopy. Penicillar arteries were confirmed to terminate in the cords of Billroth, representing the open circulation. ...
Lynch P R - - 1985
Because conflicting results have been obtained in studies of the hamster (Mesocricetus auratus) microcirculation following rapid decompression, we were interested in the origin of bubbles in the cheek-pouch preparation. The hamster cheek-pouch and surgically exposed femoral vessels were observed under the microscope, before and immediately following rapid decompression. The animals ...
Ishihara T - - 1985
The effect of bronchial circulation on wound healing at the site of anastomosis after right upper sleeve lobectomy was studied in dogs. In two dogs (Group I), the bronchial arteries were carefully preserved during the sleeve lobectomy. In 16 dogs (Group II), only sleeve lobectomy was performed after all bronchial ...
Lundkvist K - - 1985
The presence of collateral arterial supply was examined by angiography in 19 children with Wilms' tumour. Collateral arterial supply was related to tumour size. Ten of 14 tumours displaying collateral circulation were entirely intrarenal at operation, confirmed by histopathology. Angiography in Wilms' tumour is indicated when the results of urography, ...
Ono S - - 1985
Our study was carried out to clarify the changes in granulocyte functions and circulating immune complexes in 32 children with Kawasaki disease. Patients were divided into two groups, those with or without coronary aneurysm. In the group with coronary aneurysm, impairment of both granulocyte chemotaxis and phagocytosis was found, together ...
Butler S - - 1985
Amiodarone, an antiarrhythmic agent, is known to induce pulmonary toxicity in some patients. Previously described radiographic findings include alveolar and interstitial infiltrates. We report a patient who developed biapical infiltrates on chest X-ray film and demonstrated an unusual, symmetric appearance on CT. Correlative postmortem histologic findings are presented. Amiodarone-induced pulmonary ...
Ichev K - - 1985
The cardiovascular system of the dicephalus (2 spines, one pelvis) conjoined twins is being described. The heart consists of 2 atria and 3 ventricles. Various malformations are evident in the layout systematic and pulmonary circulation. The vascular system can be divided into 3 zones: an upper one--with an almost symmetrical ...
Nakanishi K - - 1985
The structure of the unique 'red tide' dinoflagellate neurotoxin, brevetoxin-B is presented and the experimental data supporting the chemical structure is discussed. A brief account of the other brevetoxins and their structural relationships is also presented. A biosynthetic scheme for the natural formation of the brevetoxin skeleton is proposed. Studies ...
Elayda M A - - 1985
The coronary arteriograms and left ventriculograms of 202 consecutive patients were reviewed. All had at least 75% diameter reduction of 1 or more major coronary arteries. In 127 patients (63%), at least 1 major branch was totally occluded. Collateral circulation was seen in 125 of these 127 patients (190 of ...
Philips J B JB - - 1984
It is clear that prostaglandins and related compounds are important in the physiology and pathophysiology of the perinatal pulmonary circulation. This article focuses on what is known about prostaglandin-related compounds (PRC) in the pulmonary circulation of the developing and newly born mammal. Also included is a discussion of the effects ...
Charan N B - - 1984
The anatomy of the bronchial artery in sheep has recently been described. However, the course of the bronchial veins has not been well established. It has been suggested that the bronchial veins are the major site of fluid leakage following histamine infusion, and it has been postulated that the bronchial ...
Di Carlo V - - 1984
A rich serotoninergic innervation of the anterior spinal artery has been evidenced by histofluorescence. The main contribution to this adventitial serotoninergic plexus appears to originate from a serotonin fiber network in the anterior horns: serotonin-containing fibers reach the dorsal termination of the sulcocommissural artery and run within its wall in ...
Green J F - - 1984
Pulmonary C-fibers initiate the prompt apnea evoked by pulmonary arterial injections of capsaicin, but their role in the subsequent rapid shallow breathing of the pulmonary chemoreflex is disputed. To determine whether this reflex tachypnea is triggered by pulmonary C-fibers rather than by afferents further downstream, we separately perfused the pulmonary ...
Joelson J - - 1984
Amiodarone hydrochloride, a new antiarrhythmic agent, has been associated with pulmonary toxicity characterized by cough, dyspnea and diffuse pulmonary infiltrates. We describe a case of fibrosing alveolitis, diagnosed by lung biopsy, in a patient receiving amiodarone which responded to corticosteroid therapy. The pulmonary symptoms recurred after discontinuing corticosteroids, five months ...
Abouhatem R - - 1984
Rib fractures and flail chest could be fatal if gas exchange is impaired. Efficient pain relief with continuous thoracic epidural analgesia allows a good physiotherapy management without central sedation and impairment of cough reflex, this prevents pulmonary atelectasis and infection. Eighteen patients/19 were treated with success in spite of flail ...
Lucas C L - - 1984
Assessment of the fluid mechanics of the pulmonary circulation has been hindered by the relative inaccessibility of the pulmonary vascular bed. Current understanding is based largely on analyses of mathematical models which have been used to simulate hemodynamic characteristics within an architectural representation of that bed. These representations have ranged ...
Donáth T - - 1984
On occasion of the 425th anniversary of the publication of M.R. COLOMBO's De re anatomica, the author assesses this work and discusses the priority problems arising in connection with the description of pulmonary circulation. The life and activity of COLOMBO's contemporary, MICHAEL SERVETUS is also discussed. The conclusion is drawn ...
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