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Results 601 - 650 of 771
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Eloy R - - 1988
An in vitro method has been developed for human non-anticoagulated blood to evaluate the enhancing effect of hemostatic agents on both plasmatic and cellular activation of the coagulation cascade. The coagulation time and the sequential generation of fibrinopeptide A (FpA) have been used as parameters. The kinetics of generation of ...
Patil A - - 1988
Vaporization of atheromas in 10 human aorta segments immersed under flowing blood in vitro were done using the EFF probe. No increase in packed cells of the flowing blood following atheroma vaporization were noted suggesting absence of post vaporization debris. No damage to the aorta underlying the vaporized atheroma was ...
Kawamoto Y - - 1988
The behavior of a newly developed damped oscillation type rheometer was analyzed for fibrinogen solution and blood during coagulation. This rheometer consists of a cylindrical tube suspended from a torsion wire, that is filled with liquid to be tested. The logarithmic damping factor (LDF) during coagulation for blood and fibrinogen ...
Anim J T - - 1988
A preliminary histomorphological examination of the nasal mucosa of 8 heatstroke patients who presented without epistaxis, showed stromal vascular damage and degenerative changes in the basal lamina of the overlying epithelium, severe enough in two cases to indicate impending epistaxis, even in the absence of disseminated intravascular coagulation (DIC). It ...
Tuman K J - - 1987
The effects of progressive blood loss on coagulation were studied in 87 adults (age 23-66 yr) undergoing a variety of operations under general anesthesia. None had preoperative alterations in coagulation or liver function and none were receiving anticoagulant or antiplatelet medication. Whole blood coagulation status was quantitated using thrombelastography (TEG). ...
Bärtsch P - - 1987
Blood coagulation, fibrinolysis, and arterial blood gases were examined in 66 nonacclimatized mountaineers at 4,557 m. Subjects were classified according to a clinical score as healthy (n = 25), having mild acute mountain sickness (AMS) (n = 24), showing severe AMS (n = 13), and suffering from high-altitude pulmonary edema ...
Hutchison S M - - 1987
Epistaxis was diagnosed in 10 patients with apparent upper gastrointestinal bleeding, comprising a 0.55% incidence of hematemesis and melena in the population studied. A sufficient amount of blood can be swallowed during epistaxis to cause hematemesis and melena. Recent facial trauma or epistaxis, absence of a history of chronic dyspepsia, ...
Bowen R C - - 1987
This paper reports the results of principal components and stepwise discriminant analyses of anxiety, depression and fear scores for 74 phobic and anxious-depressed psychiatric patients. Factor analysis indicated a coherent agoraphobia factor, with less coherent blood-injury and social phobia factors. Discriminant analysis showed a high degree of correct classification of ...
Solem J O - - 1987
Concentration of superfluous blood in the oxygenator after the termination of a cardiopulmonary bypass was studied in 46 aortocoronary bypass patients. 15 patients were treated with a centrifugation system, the Haemonetics Cell Saver, 16 patients were treated with the Gambro Hollow Fibre Hemofilter and the remaining 15 patients received as ...
Machovich R - - 1986
Copolymers of poly/vinyl alcohol-acrylic acid/ with various content of sulphate and carboxyl groups have been synthetized and tested for their in vitro effect on blood coagulation. The results indicate that the sulphated copolymers display an inhibitory effect but there is a requirement in the charged groups of about 20% in ...
Zammit M - - 1986
The influence on healing of three materials for closure of interstices in a macroporous Dacron arterial prosthesis were evaluated by 56-day implantation in the canine descending thoracic aorta. The materials studied were: the nondenatured fibrin deposited as a result of a 4-step preclot with autogeneic blood (n = 6), heat-coagulated ...
Velasco F - - 1986
In order to assess the role of the kallikrein-kinin (K-K) system in the pathogenesis of the adult respiratory distress syndrome (ARDS) we have prospectively determined coagulation contact phase, blood gas and hemodynamic parameters in patients with ARDS at 0, 36 and 72 h from diagnosis. Compared to normal values, significantly ...
Wolfe J M - - 1986
In a tilt aftereffect (TAE) paradigm, 2 min of adaptation produced an aftereffect that decayed almost completely within 4 min. Four minutes of adaptation produced a TAE that lasted more than 2 wk. Two modes of adaptation contribute to the TAE and account for other aftereffects: short-term fatigue, produced very ...
Challoner T - - 1986
A study has been made of a number of haematological and haemorheological factors following venesection therapy. Haematocrit was very effectively reduced by the venesection regimen and led to a fall in whole blood viscosity in spite of the microcytosis that was eventually induced in all the subjects. No clinically significant ...
Gerber H - - 1986
Methods used for estimating in vivo diffusion velocity of thyroglobulin (Tgb), the factors affecting hydrodynamic properties of thyroidal colloid and the effects of changing diffusion properties on follicular function are briefly reviewed. The principal methods, besides pure in vitro techniques, are autoradiography of thyroid sections after in vivo labelling of ...
Schoeffel D - - 1986
We investigated selected coagulation parameters in 13 patients who had undergone open heart surgery with extracorporeal circulation (ECC). During ECC factor XIIa increased considerably to 38%. This may lead to intravascular coagulation, which is however inhibited during ECC by the administered heparin. The C1-inhibitor activity decreased to 12% during ECC, ...
Gralnick H R - - 1986
1-D-Amino(8-D-arginine)-vasopressin (DDAVP) infusion in three patients with type IIa von Willebrand's disease (vWD) resulted in a normalization of the factor VIII coagulant, factor VIII-related antigen, and von Willebrand factor (vWF) (ristocetin cofactor) activities and the bleeding time. The normalization of these hemostatic parameters persisted for four hours. Over the same ...
Colver G B - - 1986
The treatment of vascular naevi with lasers is widely practised. The concept of specific vascular damage was an early ideal but it is much harder to attain than had been anticipated. The favourable results achieved by coagulation necrosis of the epidermis and upper dermis with the argon and CO2 lasers ...
Pizzola P A - - 1986
The interpretation of bloodstain patterns at crime scenes has received increased attention in recent years. Important to an understanding of this is knowledge of the fundamentals of blood droplet formation and impact dynamics. A review of the literature reveals that a considerable amount of work has been done with aqueous ...
Kuroiwa T - - 1986
The effect of Nd:YAG and CO2 laser beams on cerebral microvasculature was examined in experimental animals. Soft x-ray microangiography and histological examination of the brain after Nd:YAG laser exposure revealed broad avascular or oligovascular zones in the irradiated and the surrounding edematous tissue, in which the surviving vessels were narrowed ...
Mustafa K Y - - 1985
Blood coagulation and fibrinolysis were assessed in 55 cases of heat stroke who presented with or without bleeding tendencies during the Makkah pilgrimage of 1983. 17 patients were identified to have evidence of disseminated intravascular coagulation (DIC). Bleeders with DIC had a higher incidence of shock and a higher mortality ...
Hatton P D - - 1985
A high performance aircraft test pilot who presented with acalculous cholecystitis was found to have a calcified omental hematoma adjacent to the gallbladder. Omental hematomas have not previously been linked to flight in high performance aircraft. Current prevailing hypotheses regarding etiologies of omental hematomas include rapid blood flow shifts and ...
Kang Y G - - 1985
The blood coagulation system of 66 consecutive patients undergoing consecutive liver transplantations was monitored by thrombelastograph and analytic coagulation profile. A poor preoperative coagulation state, decrease in levels of coagulation factors, progressive fibrinolysis, and whole blood clot lysis were observed during the preanhepatic and anhepatic stages of surgery. A further ...
Niwa M - - 1985
Wakan-Yakus (traditional herbal drugs) such as Akyoh (Glutinum), Gaiyoh (Artemisiae folium), Sanshishi (Gardeniae fructus), Kizutsu (Aurantii fructus), and Taisoh (Zizyphi fructus) were studied in relation to their effects on blood coagulation-fibrinolysis. (1) All of the water extracts of the Wakan-Yakus prolonged aPTT and PT. The potency of the effectiveness on ...
Tauber R - - 1985
Until now the forceps used for biopsy of the bladder has required a second procedure to coagulate the bleeding resulting from tissue removal. A new biopsy forceps is described, which makes it possible to perform the biopsy and coagulation simultaneously, thus, eliminating the inconvenience of having to change instruments during ...
Hewson J R - - 1985
A retrospective review of 64 patients receiving more than 10 units of red cell concentrate plus crystalloid within 12 h revealed two consecutive patterns of elevation of the partial thromboplastin time (PTT). The PTT at 3 to 4 h (PTT3-4) correlated with the number of liters of crystalloid (LC) infused ...
Schrems W - - 1985
The therapeutic effect of topically applied prostaglandin inhibitors on the laser-induced disruption of the blood-aqueous barrier was investigated in six series of five rabbits each. One series was not coagulated and served as baseline, and in a reference group laser coagulation was performed without pretreatment with a prostaglandin inhibitor. In ...
Ariga T - - 1985
FPA disappeared from the circulating blood along a double-exponential decay curve consisting of an initial phase (t 1/2 = 1.8 min) and a late phase (t 1/2 = 34.7 min). The rapid decrease in blood FPA was due to the large extravascular space, the size of which was estimated to ...
Levin J - - 1985
The Limulus Test for bacterial endotoxins was developed as the result of investigations of the effects of Gram-negative bacteria on blood coagulation in the horseshoe crab Limulus polyphemus. Analysis of the factors required for blood coagulation (all of which are contained within Limulus amebocytes) has revealed marked similarities between blood ...
Zondag A C - - 1985
Differences in the coagulation patterns between humans and dogs and the lack of reagents in the veterinary field to control haemostasis require a modification of existing screening techniques. The adaptations which were applied and which are described in this paper consist of greater dilutions of the samples. Two modified screening ...
De Wit C A - - 1985
Levels of blood coagulation factors were measured monthly in hedgehogs kept at 20 degrees C under a natural-light schedule for 1 yr using prothrombin time and the P & P method. Hedgehogs display a circannual cycle of blood coagulation factors in the absence of temperature cues, with high levels corresponding ...
Kaibara M - - 1985
In order to attempt in vitro evaluation of antithrombogenecity for materials of artificial blood vessel tube, a new type of rheometer was developed. The rheometer originally consists of a cylindrical tube suspended from a torsion wire and filled with blood. The tube is excited in torsional oscillation and subsequent damped ...
Dahlman T - - 1985
Blood coagulation and fibrinolysis variables have been studied in the normal puerperium in order to facilitate the decision to discontinue thrombosis prophylaxis after delivery. 16 women were followed longitudinally from the 1st to the 6th week post partum. Factor VIII activity and related antigen, fibrinogen, fibrinopeptide A, antithrombin III, plasminogen, ...
Lenihan D J - - 1985
Platelet activating factor (PAF) and 1-O-alkyl-linked choline-containing phosphoglycerides have been identified in the blood of the lizard, Anolis carolinensis. The level of PAF in the blood of chronically stressed lizards is 250% higher than in that of controls; the blood contains sufficient 1-O-alkyl-linked choline-containing phosphoglycerides to support the synthesis of ...
van Vliet K J - - 1985
The normal blood coagulation in Cyprinus carpio and Oreochromis mossambicus was investigated by thrombelastography and standard thrombelastographs were obtained for each species. The effect of stress on blood coagulation was thereafter determined. The thrombelastograms indicated hypercoagulability under stress conditions. A prominent observation is the differences in the elasticity of the ...
Cederholm-Williams S A - - 1984
Examination of coagulation factors in menstrual fluid collected from women with normal menstrual blood less (less than 80 ml) showed the absence of thrombin generating enzymes. Factor X, pro-thrombin and free thrombin were absent from menstrual fluid. No difference was found between days 1 and 2 of menstruation. Thus activation ...
Lartigue-Mattei C - - 1984
The blood and plasma kinetics of intravenously administered 3H-labelled PAF-acether were determined in seven rabbits. PAF-acether was rapidly distributed and slowly eliminated. Individual variations were very small. The main route of metabolism involves deacetylation of the PAF-acether into lyso-PAF-acether, leading to an equilibrium between the two molecules (10%/90%). This equilibrium, ...
Jackson R E - - 1984
Regional cerebral cortical blood flow (rCCBF) in 15 large dogs was determined using the double thermistor dilution method during standard closed-chest massage (CCM), CCM with an epinephrine infusion at 30 micrograms/kg/min (CCM + Epi), and open-chest cardiac massage (OCCM). As a percentage of prearrest flow values, the rCCBF was 9.8% ...
Bennett J S - - 1984
The hemostatic mechanism has evolved to provide efficient protection from traumatic blood loss and yet maintain the blood in a fluid state in the circulation as a whole. Recent advances in biochemistry have provided both detailed understanding of hemostasis and clinically useful coagulation assays to exploit this understanding. Clinicians now ...
Vignolo-Scalone W H - - 1984
Disseminated intravascular coagulation is often characterized by organ failure and bleeding. By use of light microscopy, previous studies have shown extensive fibrin deposition in vessels. However, quantification of fibrin deposition using ultrastructural methods has not been reported. In this study dogs were infused with thrombin, and disseminated intravascular coagulation developed. ...
Chohan I S - - 1984
Yoga is known to induce beneficial effects on physiological, biochemical and mental functions in man. Its effects on blood coagulation are not known. A study was conducted in seven previously untrained male adults who underwent a combination of yogic exercises, daily for one hour, over a period of four months. ...
Prandota J - - 1984
In rabbits intravenous injection of subtoxic doses of E. coli endotoxin serotype 02:K1 (10 micrograms/kg), resulted in the activation of intrinsic and extrinsic pathways of blood coagulation and, in some animals, simultaneous fall of the fibrinolytic activity which was manifested by hypercoagulability and intravascular coagulation already at the initial stage ...
Inkster M - - 1984
Antithrombin III (AT-III) is the major inhibitor of thrombin, Factor Xa, and other coagulation enzymes. Congenital and acquired deficiencies of AT-III are thought to contribute to thrombosis and disseminated intravascular coagulation. Because a recent report suggested reduced AT III in stored blood, we evaluated blood bank storage effects. Serial samples ...
Ferencz C - - 1984
In a population-based study on congenital cardiovascular malformations (CCVM), the occurrence of heritable coagulopathies among case parents and not among controls raised the possibility of an etiologic association of CCVM with blood disorders. The literature was searched for evidence that such an association could be biologically plausible. Reported embryologic and ...
Schultz R E - - 1983
Extravasation of glycine irrigant during percutaneous ultrasonic lithotripsy has caused a transurethral resection syndrome consisting of hypertension, confusion and hyponatremia. With a rabbit model this complication is recreated with the intraperitoneal instillation of 1.5 per cent glycine solution tagged with 14carbon-glycine. Significant quantitative absorption of glycine into blood and other ...
Köstering H - - 1983
Blood coagulation studies were performed on 60 Hanover domestic pigs ready for slaughter and a total of 84 Goettingen minipigs. A tendency to hypercoagulability was found in these pigs, expressed in a shortened PTT, r- and k-time in the thromboelastogram and a slightly reduced plasminogen and plasmin level. Many values ...
Nilsson L - - 1983
Whole blood and plasma drawn into plastic bags containing citrate-phosphate-dextrose (CPD) and stored at 4 degrees C for various periods were studied for variations of coagulation factor and fibrinolytic activity. The blood was collected and processed in the conventional way. The most labile component, factor VIII coagulant activity, decreased to ...
Arai H - - 1983
Dynamic fluctuations of biological activities and antigen amounts of antithrombin III (AT-III) in acute cerebrovascular diseases were analyzed and evaluated. (1) AT-III levels assayed by both biological and immunological methods showed a gradual decrease with increasing age, and levels in patients with cerebral thrombosis were lower than those in patients ...
d'Onofrio G - - 1983
Using an automated cytochemical analyzer used for routine differential counts, we have been able to demonstrate acquired myeloperoxidase deficiency in 102 patients at our institution. Clinical and laboratory data on these patients showed a high incidence of diabetes mellitus (25.5%) and thrombotic diseases (24.5%), as well as a strikingly constant ...
Nemerson Y - - 1983
Factor VII, a single-chain zymogen, has sufficient proteolytic activity to initiate blood coagulation. The reason that coagulation does not occur continuously is that the zymogen like its 2-chain derivative enzyme, factor VIIa, absolutely requires tissue factor. The latter, a lipid-dependent glycoprotein, is not normally present in the blood. Upon tissue ...
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