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Results 651 - 700 of 821
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Barber C J - - 1989
Scant attention has been paid to the technical aspects of central venous catheter placement in intravenous digital subtraction angiography (IV-DSA). In a prospective study of 200 unselected patients referred for IV-DSA, technical problems and success rates were recorded. Central venous access via an arm vein was achieved in 95% of ...
Keatinge W R - - 1989
Changes in summer (July-September) and winter (January-March) mortalities of people aged 70-74 in England and Wales from 1964 to 1984 were compared with possible causal factors. Summer mortalities were little affected by annual temperature or influenza epidemics and fell from 1972-1975 for all causes, coronary and respiratory causes, while cerebrovascular ...
Stine K C - - 1989
Central venous catheters have proven to be an important aid for the care of pediatric patients with malignancies receiving chemotherapy. A rare complication of such catheters is pulmonary septic emboli. This report describes a 15-year-old white girl with rhabdomyosarcoma who developed pulmonary nodules while on chemotherapy. These lesions appeared to ...
Stenzel J P - - 1989
In a prospective, 45-month study, we compared the complication rates of percutaneously placed femoral and nonfemoral central venous catheters in critically ill pediatric patients. Forty-one percent of the 395 central venous catheters placed during this interval were femoral. Noninfectious complications were recognized for 2.5% of femoral catheters and 2.1% of ...
Caulkins S E - - 1989
The blood supply patterns to the spinal cord were examined and compared in 15 dogs and 10 cats by use of dissection and radiographic visualization. The lowest percentages of radicular contributions and the smallest diameter vessels were found in the thoracic part of the spinal cord. The central arteries were ...
Martin G B - - 1989
Although hypokalemia has been reported after cardiac arrest and successful resuscitation, experimental data indicate that potassium is released from cells during ischemia. The purpose of this investigation was to study serum potassium concentration ([K+]) during closed chest cardiopulmonary resuscitation (CC-CPR) in humans. Twenty-two patients presenting to the emergency department (ED) ...
Ikeda S - - 1989
A case of unusual triple knotting of a central venous catheter inserted through the left basilic vein is reported. The catheter with intact triple knots could be withdrawn without an invasive maneuver. A possible cause of triple knotting was discussed in regard to the anatomic configuration of the central veins. ...
Robards J B - - 1989
In patients requiring long term central venous access, common venous access routes may become occluded. Surgical placement of central venous catheters may not always be possible or optimal. Percutaneous translumbar inferior vena cava central line placement offers an additional access route. The technique of translumbar inferior vena cava central venous ...
Hernandez R J - - 1989
Narrowing of the pulmonary arteries was created surgically in twelve dogs. In six of the dogs the narrowing was central (main pulmonary artery), and in the remaining six the narrowing was located peripherally at the hilar level of the right pulmonary artery beyond the pericardial reflection. MRI and angiography were ...
Chiarla C - - 1988
Data from 2,298 measurements of pulmonary venous admixture (QS/QT) performed in 733 patients were analyzed and processed in order to develop a method for rapid and reliable estimation of QS/QT by a simplified approach. Formulae and charts were obtained, which are easily suitable for use in all settings, and permit ...
Emerman C L - - 1988
Previous reports have advocated the use of mixed venous blood gases to estimate arterial pH and as a reflection of tissue acid-based balance. However, true mixed venous samples are difficult to obtain during cardiac arrest as they require a pulmonary artery catheter. The purpose of this study was to determine ...
Sullivan I D - - 1988
Between 1979 and 1986, 26 patients with pulmonary atresia, ventricular septal defect, and multifocal pulmonary blood supply underwent surgery (median age, 2 years) to reconnect major aortopulmonary collateral arteries to other collateral arteries or to the central pulmonary arteries in an attempt to prepare the pulmonary circulation for complete repair. ...
Acalovschi I - - 1988
The occurrence of air embolism with neurologic complications during the insertion of central venous catheters is well known, but the development of a cortical blindness has not been stress. The case of a woman patient is described, who, after the puncturing of the subclavian vein, developed a state of confusion ...
Walsh T J - - 1988
In order to investigate new approaches in diagnosis, prevention and treatment of infectious complicating chemotherapy-induced granulocytopenia, we developed and prospectively evaluated a method of chronic central venous catheterization for the induction, maintenance and support of persistent granulocytopenia in rabbits. The method entails a central venous silastic catheter with a subcutaneous ...
Borenstein D - - 1988
Isolated angiitis of the central nervous system (IACNS) is a form of granulomatous vasculitis that is confined to the nervous system. A patient with localized IACNS affecting the left internal carotid and posterior cerebral artery adjacent to a primary intracerebral lymphoma of the midbrain along with associated granulomatous inflammation of ...
Defalque R J - - 1988
The reports of neurological damage after central venous cannulation over the past 20 yrs have been gathered, summarized, and analyzed. We found 59 cases of nerve lesions: 32 serious or even fatal, and 27 light or transient ones. They included: Lesions of the cervical sympathetic chain: needle trauma, compression by ...
van Haeften T W - - 1988
A patient in whom a left internal jugular vein catheter had first migrated into the left pericardiophrenic vein, and subsequently had perforated into the pericardium leading to a cardiac tamponade is described. Although this malposition has rarely been reported, it does not seem to be so infrequent, as three other ...
Magovern J A - - 1988
Now that long-term survival can be achieved in animals with mechanical circulatory devices, reliable permanent arterial access for physiologic and pharmacologic studies has become important. A novel approach has been developed eliminating the need for repeated arterial cannulation. The arterial access system (AAS) consists of a 7 Fr Silastic catheter, ...
Oni O O - - 1988
The routes of venous drainage from the diaphyseal marrow of the human tibia have been investigated by roentgenologic techniques following perfusion with an aqueous barium sulphate suspension. Plain roentgenographs immediately after perfusion revealed that the dye promptly escaped from the marrow into the general systemic circulation through a number of ...
Meranze S G - - 1988
The development of totally implantable reservoir central venous access systems has been an important advance in patients requiring long-term central venous access. With lower rates of infection and thrombosis than those with external catheters, they have potential for greater longevity and patient acceptance. Complications such as subcutaneous prosthetic infection, infusate ...
Fletcher J P - - 1988
Two hundred and twenty-six central venous catheters were placed in 195 consecutive patients requiring central venous catheterisation for total parenteral nutrition (TPN). Of these 226 catheters, 198 were placed percutaneously into the subclavian vein by the infraclavicular route. In 99 consecutive subclavian catheter insertions, a 12G needle with introducing sheath ...
Fletcher E C - - 1988
The fiberoptic central venous flotation catheter has gained widespread clinical acceptance for continuous monitoring of mixed venous oxyhemoglobin saturation. There are obvious research applications to this device, especially in monitoring very low central venous saturations in response to hypoxic challenge and cardiopulmonary exercise testing. However, the accuracy of this device ...
Wilson R G - - 1988
Right atrial electrocardiography has been used both for the positioning of ventriculoatrial shunts and for the detection and treatment of air embolism during neurosurgical procedures. Its use for the precise placement of central venous catheters for parenteral nutrition is described here. 50 lines were placed in 48 patients. The lines ...
Böck J C - - 1988
This study evaluates the routine mathematic approach (monoexponential extrapolation) for analysis of transpulmonary thermal-dye dilution curves and estimates the effects of systemic-indicator recirculation by use of a deconvolution technique. Fifteen dogs anesthetized with N2O-piritramid were studied before and after induction of pulmonary edema by oleic acid. After introduction of central ...
Marais J - - 1988
Scanning-electron-microscopic examination of corrosion casts was used to investigate the microcirculation of the coronary border of the equine hoof. Numerous peg-shaped capillary plexuses derived from arterioles extended distally from the dorsal branches of the digital arteries parallel to the hoof wall. The plexuses varied in length and consisted of a ...
Watterson J - - 1988
Two children receiving continuous infusions of vesicant chemotherapy through central venous catheters (CVCs) developed venous thrombosis, and intrathoracic extravasations ensued. One child receiving a continuous vincristine infusion presented with signs of thoracic venous obstruction, fever, and respiratory distress and had pleural effusions and pulmonary infiltrates on his chest roentgenogram. The ...
Pigot B - - 1988
Two central venous catheters were inserted into the subclavian or internal jugular vein using a single puncture and tunnelled with two different subcutaneous pathways in 32 critically ill patients; 15 of them underwent this procedure immediately after a tracheostomy. The procedure was carried out without significant technical difficulties. Separate removal ...
Johnson R L - - 1988
Single- and double-lumen silicone rubber central venous catheters were subjected to in vitro destructive testing. Using this data we devised a clinical technique for the detection of central venous thrombosis incorporating mechanical injection of the catheters, serial filming, and magnification radiography. In 20 patients studied, thrombosis was detected in 12 ...
Jones T R - - 1987
We reviewed retrospectively our experience with the transcutaneous placement of 77 double-lumen hemodialysis catheters in the jugular or subclavian veins in 65 patients. The catheters remained in place for an average of 20.7 days. Three unrelated deaths occurred within 30 days of insertion. Post-insertion chest roentgenograms were made on all ...
Plit M L - - 1987
In order to identify potential problems and thereby minimise the risk of invasive vascular catheterisation, we conducted an analysis of these procedures in our medical intensive care unit with the aid of a computer database. During the 9-month study period 114 patients underwent 247 invasive vascular catheterisations, including pulmonary arterial ...
Damen J - - 1987
Infectious complications associated with simultaneously inserted pulmonary artery and central venous catheters via the same internal jugular vein were studied prospectively in 622 patients undergoing open-heart surgery under cephalothin prophylaxis. Successful insertion of the catheters was achieved in 650 (98.3%) of 661 attempts, while puncture complications occurred in 51 (8.2%) ...
Schilling J J - - 1987
Thirty-eight occluded hemodialysis accesses were infused with urokinase on 43 occasions. In 49% of the cases, the access patency was reestablished for a week or longer, although 38% of this subset subsequently rethrombosed. Postthrombolysis angiography detected a stenotic segment in 14 of 22 angiograms (64%). Local bleeding was common, but ...
Andrews J C - - 1987
Seventy four digital subtraction venograms of the upper extremity and mediastinum were performed in 69 patients. The indications included idiopathic arm and shoulder swelling, difficulties with a central venous catheter, chronic venous access device, or dialysis fistula, superior vena cava syndrome, or pre-operative anatomical mapping. Clinically useful information was obtained ...
Suzuki Y - - 1987
Blood sample were collected from both the arterial and venous lines of the patients undergoing hemodialysis using cuprophan membrane at several time intervals. Radioimmunoassay was then applied to measure the C3a and C5a levels. C3a levels from the arterial lines of patients undergoing uneventful hemodialysis were 463.2 +/- 51.3 ng/ml ...
Weil M H - - 1987
Arterial blood lactate is regarded as a very good indicator of the severity and prognosis of circulatory shock. Accordingly, the practical issue of whether such measurements might be equally valid on blood sampled from the right atrium or superior vena cava or from the pulmonary artery was investigated. In blood ...
Naka Y - - 1987
The microangioarchitecture of corrosion casts of the cat spinal cord was studied by scanning electron microscopy. On the ventral surface of the spinal cord, the anterior spinal artery and the anterior spinal vein ran parallel along the anterior median fissure. Many central arteries branching from the anterior spinal artery coursed ...
Cissik J H - - 1987
1. Amniotic fluid, cerebrospinal fluid, serum, and urine chemistries; respiratory rate and arterial and mixed venous blood gases; heart rate, hematocrit, and cardiac output; and arterial, pulmonary artery, central venous and pulmonary wedge pressures were measured in 20 pregnant adult goats of 19.5-34 kg body weight. 2. Arithmetic means, standard ...
Källskog O - - 1987
A method for microcatheterization of rat kidneys was developed. The catheter consists of 50-100 micron thick polyethylene tubes, and is inserted into the interlobular or arcuate arteries via a lumbar artery. The technique makes it possible to perfuse a small number of nephrons with very high doses of vaso active ...
Schuitmaker J J - - 1987
To determine the relative importance of the peripheral and central chemoreceptors in the ventilatory response to acute metabolic acid-base disturbances we measured the normoxic ventilatory response to acute respiratory and metabolic acidosis and alkalosis in 10 chloralose-urethane anesthetized cats using a technique of vertebral artery perfusion that allows one to ...
Kellam B - - 1987
Central venous catheters (CVC) in pediatric patients provide a reliable method for administration of total parenteral nutrition and chemotherapy. Catheter thrombotic occlusion is a major complication and, until recently, the only therapeutic option was removal and surgical replacement of the catheter. Two fibrinolytic agents, streptokinase and urokinase, have been used ...
Diemer A - - 1987
The positioning of various central venous catheters in newborns including very thin silastic catheters has been checked by sonography. Even the very thin silastic catheters are easily detectable owing to their strong echoes. Diverse malpositions are presented, including non-central positioning detected by sonography. The frequency of control radiographs could be ...
Wells J R - - 1986
The relative safety of silicone rubber catheters allows use of the deep brachial vein for long-term central venous access when other vascular access sites are unavailable or undesirable. After local infiltration, a small incision is made across the medial edge of the brachial biceps and the vein is isolated from ...
Formanek A G - - 1986
Successful MR imaging of the central pulmonary arterial tree was performed in four cases of conotruncal malformation and in one case of pulmonary arterial banding. Angiography performed near the time of MR imaging in three cases and 15 years earlier in two other cases did not visualize the central pulmonary ...
Hoffman M J - - 1986
Operative management of a patient with septic thrombosis from Candida organisms of the subclavian and central veins is described. Diagnosis was suspected on the basis of positive blood and catheter tip cultures, indium-labeled leukocyte scan, and bilateral upper extremity phlebograms. Venous thrombectomy with a Fogarty catheter of the upper extremity ...
Purdue G F - - 1986
A prospective study was performed to assess the indications for and complications of femoral vascular access in burn patients. In the study, 1655 femoral catheters (one-third arterial) were inserted in 232 patients; 136 of the catheters were inserted in 29 children (18 were younger than five years of age; the ...
Lammermeier D - - 1986
A key factor in the success of a home parenteral nutrition program is prolonged and safe access to the central venous system. There are some patients, however, in whom the cephalic, external jugular, internal jugular, subclavian, and saphenous veins cannot be used. In these patients, cannulation of an intercostal vein ...
Borland L M - - 1986
Position of the CVP port on a flow-directed balloon-tip pulmonary arterial catheter affects the accuracy of both thermodilution cardiac output determinations and CVP measurements. Systemic allometry (the study of the growth of a part in relation to the total organism) has been used to determine an easily measured independent variable ...
Kaufman J - - 1986
Central venous catheter-related infection and evidence for central venous thrombosis developed in five patients. On the basis of ongoing bacteremia after catheter removal and venographic confirmation, catheter-related septic central venous thrombosis (CR-SCVT) was confirmed. These patients were treated successfully with anticoagulation and antibiotics; none required surgical exploration or drainage.CR-SCVT is ...
Nelson E W - - 1986
Venous access techniques have evolved to include a variety of methods that can be tailored to a number of specific needs. The use of central venous catheters for short- and long-term venous access, newer methods of central venous access using totally implantable devices, and the evolution of current hemodialysis are ...
Slagle D C - - 1986
A patient with Crohn's disease who required placement of a right external jugular vein central catheter for total hyperalimentation is presented. Catheter-induced thrombosis and catheter-associated bacteremia and sepsis subsequently developed. Following the description of the case is a brief discussion of the complications inherent in central line placement, the mechanisms ...
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