Search Results
Results 451 - 500 of 828
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Krzywda E A - - 1999
Occlusion is the most common noninfectious complication of central venous access catheters. The primary approach is prevention. Successful management begins with an understanding of the potential etiologies of occlusions. Proper assessment aids the clinician in correctly identifying the cause and treatment strategy. This article focuses on the physiologic principles of, ...
Vraney R T - - 1999
STUDY DESIGN: An analysis of the vascular anatomy relative to the underlying discs in the lower lumbar spine performed by using radiologic studies. OBJECTIVE: To define better the vascular anatomy of this region from the perspective of the endoscopic spine surgeon, and to draw conclusions regarding surgical accessibility of the ...
Thomas C J - - 1999
We report a case of delayed pneumothorax, central venous catheter migration and iatrogenic hydrothorax in a 22-year-old female. The left subclavian central venous catheter initially transfixed the lung apex; pneumothorax occurred 24 h later following initiation of positive pressure ventilation. Lung collapse as a result of the pneumothorax caused catheter ...
Sasadeusz K J - - 1999
In 34 patients with chronic renal insufficiency or failure, 43 small-bore central catheters were placed via the internal or external jugular veins: right internal jugular vein, 28; left internal jugular vein, 14; right external jugular vein, one. Central venous access was achieved in all patients (mean catheter dwell time, 28 ...
Wunderbaldinger P - - 1999
The aim of this essay was to demonstrate the thoracic venous anatomy as delineated by malpositioned central venous catheters on plain chest radiographs. We therefore used the didactic advantage of clinically inadvertent catheter positions. This approach was chosen to illustrate venous anatomy with plain chest radiographs, and, thereby, to recognize ...
Start R D - - 1999
The pathological investigation of deaths following surgery, anaesthesia, and medical procedures is discussed. The definition of "postoperative death" is examined and the classification of deaths following procedures detailed. The review of individual cases is described and the overall approach to necropsy and interpretation considered. There are specific sections dealing with ...
Rajan V - - 1999
An infant developed focal tonic clonic movements of both lower limbs while receiving total parenteral nutrition through a left saphenous percutaneous central venous catheter. Radiographic studies using a contrast confirmed that the catheter tip was located in the ascending lumbar vein in close proximity to the epidural space. Withdrawal of ...
Wang H E - - 1999
The placement of central venous catheters is a technically challenging procedure with known risks and complications. We report an attempted left subclavian central venous catheterization that was complicated by looping and entrapment of the guidewire. We hypothesize that this complication occurred because the straight guidewire that was used may have ...
Goldmann C - - 1999
Anesthesia of the pig poses great problems for experimental animal-based research and particularly in shock research. In this study, five mechanically ventilated domestic pigs were given long-term anesthesia with a combination of ketamine plus pentobarbital. Circulatory parameters were recorded every 2 h via an arterial catheter placed in the right ...
Sakka S G - - 1999
PURPOSE: The purpose of this study was to analyze three different variables of cardiac preload; central venous pressure (CVP), pulmonary artery occlusion pressure (PAOP), and intrathoracic blood volume index (ITBVI) that served as the best indicator of cardiac function, that is, cardiac index (C1) or stroke index (SI). MATERIALS AND ...
Ricci M - - 1999
OBJECTIVE: To describe an unusual case of accidental insertion of a central line into an anomalous right-sided aortic arch. DESIGN: Case report, clinical. SETTINGS: Community hospital, university-affiliated. CONCLUSIONS: Intraoperative radioscopy, chest radiographs, and pressure transducer monitoring usually allow for the prompt recognition of the accidental insertion of venous catheters into ...
Varelas P N - - 1999
We describe a 58-year-old woman who presented with bilateral ophthalmoplegia, exophthalmos, and headache and was found to have retrograde internal jugular vein flow secondary to a high-grade obstruction of the ipsilateral brachiocephalic vein from a previous hemodialysis catheter placement. The patient had also a high-flow dialysis graft in the ipsilateral ...
Stockx L - - 1999
PURPOSE: To describe a combined procedure of repositioning and leaving in situ a central venous catheter followed by immediate percutaneous treatment of associated superior vena cava syndrome (SVCS). METHODS: Eight patients are presented who have central venous catheter-associated SVCS (n = 6 Hickman catheters, n = 2 Port-a-cath) caused by ...
Cornish P B - - 1999
Supraclavicular nerve blocks are effective but may be complicated by pneumothorax. We hypothesized that, to avoid this complication, the depths of the brachial plexus and the lung could be estimated to guide needle placement. In 17 patients undergoing surgical relief of thoracic outlet syndrome, we designated a point on the ...
Moskal T L - - 1999
Central venous line malpositioning in the left mediastinum is a rare event. A case of left superior intercostal vein central venous line placement is reported. Chest radiographs, especially lateral views and contrast studies, are useful for position evaluation. Catheter removal is prudent although the purpose of the catheter and the ...
Cameron J - - 1999
1. Large conduit artery pathophysiology is associated with considerable morbidity with even normal ageing, irrespective of concurrent influences, associated with impaired arterial function. 2. Recent technical advances have enabled high-resolution non-invasive assessment of pulsatile arterial properties, but this has been largely confined to more muscular superficial arteries. There has been ...
Rückert R I - - 1999
Occlusion of arteriovenous malformations of the brain (BAVMs) by means of an endovascular approach with liquid acrylate glue is an established treatment modality. The specific hazards of this procedure are related to the central nervous system. In the case of unexpectedly rapid polymerization of the cyanoacrylate glue and adhesion of ...
Simon L - - 1999
Misplacement of a central venous catheter may lead to myocardial perforation and dysrhythmia. Atrial electrocardiography (ECG) through a saline column is an effective but complex method to determine the accurate location of catheters. We evaluated a simplified variant of this technique using the guidewire as an internal electrode in 23 ...
Fuchs S - - 1999
Thromboembolism is a major complication of long-term central venous catheter, usually associated with catheter or venous occlusion. Intracavitary right atrial thrombosis is currently considered to result from line-tip thrombosis extension. We report three adult patients in whom repeated mechanical trauma to the right atrial wall was probably the main mechanism. ...
Malet T - - 1998
BACKGROUND/AIM: Isolated stenosis of the lacrimal punctum is a frequent cause of epiphora. Treatment relies on surgical opening or dilatation with bi- or monocanalicular prosthesis. Recently, silicone perforated punctum plugs (PPP) were proposed. The drawback with these silicone PPP was that secretions accumulate in the central orifice blocking the spontaneous ...
Kossoff E H - - 1998
We report an adolescent patient with a peripherally inserted central venous catheter fracture and subsequent migration of the catheter fragment through the heart and into the lower lobe of the right lung. Physical findings were unremarkable for indications of this pulmonary embolization. With the increasing use of such devices for ...
Palesty J A - - 1998
BACKGROUND: Subclavian vein central venous catheterization and the subsequent exchange of subclavian catheters over a guidewire are frequently performed procedures. We hypothesized that the policy of obtaining a routine postprocedure chest radiograph to confirm appropriate catheter placement and to rule out complications after exchanging central venous catheters over a wire ...
Rose S C - - 1998
PURPOSE: To assess the sensitivity of Doppler flow analysis of the axillary and internal jugular veins to screen for clinically occult thoracic central veno-occlusive disease and predict successful placement of central access catheters. MATERIALS AND METHODS: Sixty-seven patients underwent both duplex sonographic evaluation of the axillary and internal jugular veins ...
Schäfer U - - 1998
PURPOSE: Restenosis after catheter-based revascularization has been demonstrated to be primarily caused by smooth muscle cell proliferation. This study examines the effects of external beam irradiation on neointimal proliferation after external injury to the central artery of the rabbit ear. METHODS AND MATERIALS: Thirty male New Zealand White rabbits were ...
Gust R - - 1998
OBJECTIVE: The aim of the present study was to evaluate the correlation, accuracy, and precision of transpulmonary thermodilution cardiac output (CO) measurement. For this purpose, this technique was compared with the clinical gold standard, the CO measurement by pulmonary artery catheter in patients after coronary artery bypass grafting (CABG). DESIGN: ...
Rajan D K - - 1998
Access to the central venous circulation for hemodialysis has traditionally been achieved via the subclavian or jugular venous routes. With ongoing improvements in medical management, many hemodialysis recipients develop exhaustion of these routes and require alternative means of central venous access. Inferior vena caval (IVC) catheters have been placed with ...
Abbruzzese P A - - 1998
Embolization of central venous catheter fragments is usually treated with percutaneous interventional techniques, which are difficult to apply in infants with very low birth weight. We surgically removed a catheter fragment in a preterm neonate, to avoid the impending thrombosis of the right pulmonary artery. The operation was performed with ...
Madeo M - - 1998
The purpose of this trial was to prepare for a large randomized trial comparing Arglaes film dressing, a recent innovation containing silver ions, against Tegaderm, a transparent polyurethane dressing. Thirty-one patients admitted to the intensive care unit and requiring the insertion of an arterial line or central venous catheter were ...
Smith J R - - 1998
BACKGROUND: This study compares central venous catheters (CVC) and peripherally inserted central catheters (PICC) for indications for insertion, complications, and economic impact. METHODS: A retrospective review of 838 (283 CVC, 555 PICC) consecutively placed venous catheters reflected 49,365 CVC and 11,814 PICC days. RESULTS: There were 57 (20%) complications in ...
Stoica S C - - 1998
Iatrogenic subclavian artery injury is a rare but recognized complication of central venous catheterization. The lesion is more severe and complex to treat when produced by large catheters such as dialysis catheters. A case is presented below with a discussion of vascular access for renal replacement therapy and the principles ...
Sofocleous C T - - 1998
OBJECTIVE: This paper reviews our experience using sonographic guidance in the insertion of peripherally inserted central venous catheters (PICCs). SUBJECTS AND METHODS: Three hundred fifty-five PICCs were placed in 262 patients, 19-92 years old, over a 24-month period using sonographic guidance for the initial venous cannulation. RESULTS: The average number ...
Albuquerque Júnior F C - - 1998
Central venous access has been widely used in the treatment of different categories of patients but it is associated with a wide range of complications. Different catheters, approaches and techniques have been employed to minimize those complications related to catheter insertion as well as those related to the prolonged use ...
Schwartz E D - - 1998
Patients with acquired immunodeficiency syndrome frequently develop complications of cardiac, pericardial, and thoracic vascular origin. The purpose of this pictorial essay is to review the most common etiologic and diagnostic imaging findings of these diseases. Patients with acquired immunodeficiency syndrome often demonstrate enlargement of the cardiac silhouette on the chest ...
Vasquez-Loayza M - - 1998
We studied the origin, length, external diameter, disposition, branching patterns and the perforators of short central artery in the circle of Willis in eighty fresh, unfixed cerebral hemispheres (40 brains). We also examined the relationship of the short central artery, the recurrent artery of Heubner, and M1 perforators to the ...
Miga D E - - 1998
De novo transcatheter fenestration of hemi-Fontan baffles has not been previously described. The purpose of this report is to present our experience in such de novo transcatheter fenestration in two consecutive patients with absent fenestration in whom the hemi-Fontan baffle was the only direct access to the pulmonary venous atrium.
Meyer J - - 1998
Carbon monoxide is hypothesized to be produced by the enzyme heme oxygenase predominantly in liver and spleen, bound to hemoglobin, and excreted by the lungs. Thus, venous carboxyhemoglobin is expected to be higher or equal to arterial carboxyhemoglobin. Unspecific inflammatory stimuli have been shown to induce heme oxygenase in lung ...
Benoit D - - 1998
Candidemia and major organ candidiasis are problems that emerged in the past 2 decades and that are partially due to medical progress. Catheter-related thrombosis of the central veins is known to be a frequent but mostly subclinical complication of central venous lines. Although candidemia and catheter-related thrombosis are frequent, candida ...
Randolph A G - - 1998
OBJECTIVE: To evaluate the effect of heparin on thrombus formation and infection associated with use of central venous and pulmonary artery catheters. DATA SOURCES: We used MEDLINE, EMBASE, citation review of relevant primary and review articles, personal files, and contact with expert informants. STUDY SELECTION: Fourteen randomized controlled trials evaluating ...
Boardman P - - 1998
Central venous catheters provide an important means of long-term vascular access in a variety of clinical situations. Catheter placement and evaluation is now forming an increasing part of the workload of interventional radiologists. This review presents an overview of malfunctioning central venous catheters. We outline the causes of catheter related ...
Sanderson P M - - 1998
We report the case of a seven-year-old girl with recently diagnosed acute lymphoblastic leukaemia (ALL) who suffered acute airway obstruction during insertion of a central venous catheter under general anaesthesia. The central airway obstruction was due to a mixture of leukaemic cells, blood clot and fibrin. There is discussion about ...
Love S - - 1998
We have examined the ultrastructure of the trigeminal sensory nerve root in three patients with medically intractable trigeminal neuralgia. In one patient, the nerve root was sandwiched between a large vein and a small pontine artery, in the others compression was due to marked dolichoectasia of a verterbal artery. Because ...
Weiss B M - - 1998
A 21-year-old patient with pulmonary atresia and ventricular septal defect (PA-VSD) was admitted to the hospital for tubal ligation. Invasive arterial and central venous (CVP) pressure, pulse oximetric oxygen saturation (SpO2), and (from the tip of oximetric central venous catheter) central venous oxygen saturation (ScvO2) and oxygen extraction rate (ExO2) ...
Bonucchi D - - 1998
During the past 10 years the type of vascular access for haemodialysis procedures have changed markedly in our centre: more elbow AV fistulae and more central venous catheters are now used. Nevertheless, early referral to nephrologists and availability of central venous catheters and peritoneal dialysis allow elderly people to be ...
Chung D H - - 1998
Central venous access for the purpose of supplying parenteral nutrition to the pediatric age group requires a careful definition of the patient's caloric need, estimated duration of therapy, and an assessment of available sites. Peripheral vein parenteral nutrition is limited by caloric density of the nutrient fluids, while peripherally inserted ...
Casali A - - 1997
A 47-year-old women developed an acute vestibular syndrome with a peripheral facial palsy not associated with any trauma. Magnetic resonance imaging showed an ischemic lesion in the territory of the posterior inferior cerebellar artery. Color Doppler ultrasonography detected an occlusion of the right vertebral artery and dissection of the artery ...
Walden F M - - 1997
The use of central venous catheters is associated with many different complications, some of which can be life threatening. Most complications associated with the use of central venous catheters are either immediate and occur around the time of catheter insertion, or are delayed and are related to the duration of ...
Oliver W C WC - - 1997
BACKGROUND: Cannulation of the central circulation is essential for management of patients who require major surgery, and for patients who are critically ill. Arterial puncture is the most frequent complication associated with central venous cannulation, and is potentially fatal. Detection of arterial puncture can be problematic, especially in patients with ...
D'Angelo F A - - 1997
Permanent central venous access devices (PCVAD) are used widely in the management of chronically ill patients, particularly in neoplastic diseases. The standard approach consists of positioning the catheter in the superior vena cava (SVC) either using subclavian or internal jugular vein puncture, or cephalic or external jugular vein cut-down, with ...
Lee H T - - 1997
External jugular venous (EJV) catheterization is a frequent method of gaining central venous access because of its low complication rate. We describe a unique experience during EJV in which a patient with chronic atrial fibrillation converted suddenly to a sustained sinus rhythm without perioperative complication from this event. Our experience ...
Eriksson S - - 1997
In chronically instrumented, conscious rabbits at moderately warm ambient thermal conditions, infusion of the NO-donor SIN-1 into the anterio-ventral 3rd cerebral ventricle (1-2 microg/min per kg BW, 2-4 microl/min, 30 min) initiated a co-ordinated activation of autonomic heat loss mechanisms, as indicated by the rise in ear skin temperature and ...
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