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Results 401 - 450 of 821
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Baracetti S - - 2001
Adequate treatment for uremic patients on hemodialysis requires valid and lasting access to central vessels. The Central Venous Catheter (CVC) as a mean of immediate access is indispensable in all acute cases where it has not been possible to prepare an AVF in time and when the peripheral vascularization is ...
Zeiss C J - - 2001
A 6.5-year-old male rhesus macaque (Macaca mulatta) was presented with acute paraplegia following a surgical procedure. During surgery, he experienced an acute hypotensive episode that required 3 hours of supportive therapy before hemodynamic stability was restored. Paraplegia remained unchanged until euthanasia 72 hours later. At necropsy, spinal cord segments T10-S3 ...
Ladakis C - - 2001
BACKGROUND: Although mixed venous O2 saturation (SvO2) accurately indicates the balance of O2 supply/demand and provides an index of tissue oxygenation, the use of a pulmonary artery (PA) catheter is associated with significant costs, risks and complications. Central venous O2 saturation (ScvO2), obtained in a less risky and costly manner, ...
Morosetti M - - 2000
It is well known that catheters placed in the subclavian or internal jugular veins may develop stenosis in the vein in which the catheter lies. Because the arteriovenous fistula (AVF) relies on good venous outflow, patients with ipsilateral central venous stenosis are subject to the malfunctioning of AVF. Until now, ...
Weber T P - - 2000
Pulmonary enzyme heme oxygenase, which catalyses carbon monoxide production, may be responsible for arteriovenous carboxyhemoglobin (COHb) differences measured in humans. Unspecific inflammatory stimuli have been shown to induce pulmonary heme oxygenase possibly leading to increased pulmonary carbon monoxide production and elevated arterial COHb. Arteriovenous COHb gradients may therefore be a ...
Vuylsteke A - - 2000
Clevidipine is a new vascular-selective, calcium channel antagonist of the dihydropyridine type with an ester side chain susceptible to esterase metabolism. In healthy volunteers, it has high clearance (0.069 litres min-1 kg-1) with a small volume of distribution at steady state (0.19 litres kg-1). The half-lives of the two initial ...
Ozimek W - - 2000
The case of a potentially life-threatening complication related to the use of implanted port device in a 8 year old Non-Hodgkin's Lymphoma patient receiving chemotherapy is described. The device was inserted in early 1997 and used repeatedly for chemotherapy without any complications. In late 1997 during routine screening for cardiac ...
Dabiré H - - 2000
1. Hypertensive conduit arteries are thicker and stiffer than those of normotensive controls. Whether they are specifically sensitive to central sympathoinhibition has never been investigated. 2. The effects of acute (24 h infusion) and chronic (4 week infusion) treatments with clonidine (0.01 and 0.1 mg/kg per day) and flesinoxan (1 ...
Goedje O O Department of Cardiac Surgery, University Ulm, Ulm, Germany. - - 2000
A transpulmonary thermal-dye dilution (TDD) technique using cold indocyanine green dye was utilized to monitor cardiac index (CI) and preload in patients after heart transplantation. Preload, determined by intrathoracic blood volume index (ITBVI) and global end-diastolic volume index (GEDVI), was compared to central venous pressure (CVP) and pulmonary artery occlusion ...
Schuster M - - 2000
Location of the tip of a central venous catheter (CVC) within the pericardium has been associated with potentially lethal cardiac tamponade. Because the pericardium cannot be seen on chest x-ray (CXR), an alternative radiographic marker is needed for correct placement of CVCs. The anatomy of the region was studied in ...
Wu X - - 2000
BACKGROUND: Experimental results suggest that the competence of the internal jugular vein (IJV) valve may be damaged when the IJV is cannulated for insertion of a central venous catheter. It has further been hypothesized that the risk of causing incompetence of the proximally located valve might be reduced by using ...
Suárez-Peñaranda J M - - 2000
Coronary sinus thrombosis is an unusual but potentially serious complication of the use of central venous devices. We report a fatal case of coronary sinus thrombosis in relation to a malpositioned central venous catheter. The death occurred very soon following the beginning of symptoms and the cause could not be ...
Cohen T J - - 2000
A 16-year-old high school basketball player with symptomatic Wolff-Parkinson-White syndrome underwent an unsuccessful radiofrequency catheter ablative procedure from the femoral venous approach. During this procedure, the patient received 30 applications of radiofrequency energy without injury to the accessory pathway. The patient was treated with flecinide 100 mg orally twice daily ...
Dionisio P - - 2000
Complications in the placement of central venous catheter (CVC) may occur in up to 20% of cases. The catheter can be misplaced in the contralateral brachiocephalic vein, the ipsi or controlateral internal jugular vein, and usually a chest X-ray is necessary to evaluate its location. We believe that the best ...
Gamba P P Department of Pediatric Surgery, University of Padua, Padua - - - 2000
Extremely low birthweight neonates often require total parenteral nutrition by central venous catheterization.The technique of choice is the percutaneous cannulation via the basilica or cephalic vein; in particular cases, these peculiar patients need a cut down catheterization. This paper describes some unusual complications of this surgical approach.
Dockery F - - 2000
The higher incidence of coronary artery disease in men is often attributed to androgens. Arterial compliance or 'stiffness' is increasingly regarded as a modifiable risk factor for cardiovascular disease. We wanted to look at the effects of complete androgen withdrawal, on arterial compliance in men. We performed arterial compliance studies ...
Hitotsumatsu T - - 2000
OBJECTIVE: The relationship of the maxilla, with its thin walls, to the nasal and oral cavities, the orbit, and the infratemporal and pterygopalatine fossae makes it a suitable route for accessing lesions involving both the central and lateral cranial base. In this study, we compared the surgical anatomy and exposure ...
van Es R J - - 2000
This technical note aims to draw the surgeon's attention to the lingual artery in its course through Pirogoff's Triangle when looking for an appropriate recipient artery in the neck. Nowadays, free vascularised tissue transfer is used routinely in the reconstruction of defects in the maxillofacial area. Comfortable access to a ...
Nesti S P - - 2000
A case is presented of cytotoxic extravasation as a result of an implantable venous port being perforated by a standard Huber needle. A patient receiving 5-fluorouracil via a dual reservoir port, implanted within the left chest wall, presented with hemoserous discharge from the right needle entry site. The left chest ...
Madhavi P - - 2000
Acute respiratory distress developed in two preterm babies because of unilateral hydrothorax secondary to the migration of a central venous catheter into the pulmonary vasculature. Prompt recognition of the problem and rapid treatment are essential and life saving. This complication of intravenous alimentation catheters has not been previously reported in ...
Ghosh A - - 2000
BACKGROUND: Central venous catheter occlusion due to thrombus formation is the most common cause for malfunction of long-term indwelling catheters. The exact pathology and pathogenesis of this common complication is misunderstood because of an array of terms being used interchangeably in the literature. This article identifies the pathogenesis and symptoms ...
Wood K E - - 2000
OBJECTIVE: Central venous catheterization is commonly performed in the critically ill. The femoral vein is widely accepted as an insertion site with complications thought to be comparable to other central access sites. We used serial ultrasound examinations with Doppler to examine the evolution of a heretofore undescribed complication of femoral ...
Hughes D - - 2000
Establishing and maintaining vascular access is often vital to the preoperative, intraoperative, and postoperative management of the small animal emergency surgical patient. Vascular access may be used for the delivery of crystalloids, colloids, blood components, medications, and anesthetic or sedative agents. It can also facilitate venous and arterial blood sampling ...
Barril G - - 2000
One of the last options, when the other possibilities of vascular access present malfunction, is the insertion of a permanent catheter in a central vein, preferentially internal jugular vein. This option is considered when arteriovenous access is impossible. We report a case of malfunction due to a permanent catheter dis-placement ...
Pecorari M - - 2000
Vascular access may be of crucial importance in long-term dialyzed patients when traditional blood access fails. Long-term central vascular access devices are usually inserted in the internal jugular or subclavian veins but thrombosis may be the major factor limiting their long-term use. To solve this problem the Tesio caheter is ...
Helttula I - - 2000
BACKGROUND: Intramedullary nailing of a long-bone fracture results in intravasation of bone marrow contents into the right atrium and pulmonary vascular bed and, therefore, may alter cardiac and pulmonary hemodynamics. METHODS: Central hemodynamic changes were recorded in 12 healthy adults with a unilateral simple tibial fracture undergoing intramedullary nailing. The ...
Thanigaraj S - - 2000
The use of a peripherally inserted central catheter (PICC) is occasionally complicated by intravascular fracture and central embolization of the catheter fragment. We present a patient in whom a PICC fragment was retrieved from the pulmonary artery 11 years after embolization following its incidental detection. Despite a history of IV ...
O'Connor P J - - 2000
This study compares prospectively the cardiovascular and catecholamine responses to central venous and pulmonary artery catheterization before and after induction of general anaesthesia. Twenty patients for elective coronary artery surgery were randomized into two groups. One group had central venous and pulmonary artery catheterization performed awake using local anaesthesia. The ...
Wang R C - - 2000
A case of presumed embolic transient ischemic episodes and multifocal infarcts to the occipital and parietal cortices and the cerebellum of a young woman with ulcerative colitis is reported. These episodes were manifested by multifocal neurologic deficits including cortical blindness, visual hallucinations, and homonymous hemianopsia. They correlated with parenteral nutrition ...
Stammers A H - - 2000
The decision to utilize extracorporeal equipment is influenced by a number of factors, including clinical efficacy, cost effectiveness, and personal judgment. The purpose of this study was to report the results of a national survey that examined factors affecting perfusionists' decisions on equipment utilization. An 80-question survey was mailed to ...
Banbury M K - - 2000
Arterial cannulation of the innominate artery for cardiopulmonary bypass offers the advantage of central cannulation with standard cannulating techniques when the ascending and arch aorta are unavailable (eg, redo, aortic dissection, aneurysms). It avoids the difficulties associated with a second incision (axillary artery cannulation) and retrograde perfusion (femoral artery cannulation).
Paun M - - 2000
The failure of dialysis access is a frequent source of morbidity and hospitalization. Traditional methods of graft surveillance include: (1) clinical examination, (2) venous line pressure measurements during dialysis, (3) urea or tracer recirculation measurement, (4) continuous wave (CW) Doppler methods, (5) duplex ultrasonography, and (6) radiograph angiography. All these ...
Macdonald S - - 2000
PURPOSE: To compare the technical success and immediate and long-term outcomes of tunneled central venous catheters placed in comparative cohorts via the subclavian vein (SCV) and the internal jugular vein (IJV) routes. MATERIALS AND METHODS: This was a prospective observational single-center study of consecutive procedures. Between November 1993 and June ...
Mohanty S R - - 2000
A 12-year-old boy presented with central cyanosis, clubbing, and ejection systolic murmur in the left second and third intercostal space. Chest roentgenogram showed a round opacity on the right border of cardiac silhouette. Echocardiography revealed a communication between right pulmonary artery and left atrium, which was later confirmed on selective ...
Cupitt J M - - 2000
The use of central venous catheters in neonates is associated with early and late complications. It is recognized that catheter tip migration and perforation of a viscus can occur at any time with a potentially fatal outcome. We present a case in which the successful placement of a central line ...
LaRue G D - - 2000
A retrospective study of 431 patients who had peripherally inserted midclavicular or central catheters placed during a consecutive 13-month period using the conventional landmark method for placement was compared with a second group of 326 patients, who during a 12-month period had such catheters placed using ultrasonography. The data demonstrate ...
Walsh R M - - 2000
INTRODUCTION: It has long been thought that surgical disruption of the membranous labyrinth invariably results in sensorineural hearing loss and balance dysfunction. Recent evidence suggests that the inner ear can withstand such manipulation without loss of function. The technique of transmastoid partial labyrinthectomy has recently been described as a means ...
Biffi R - - 2000
Central venous access devices placed through a percutaneous subclavian approach may be compressed by neighbouring bony structures, leading to biomaterial fatigue, catheter fracture at the compression site, and possible embolisation of distal fragment into the central veins. The aim of this paper is to review the experience of the authors, ...
Pittiruti M - - 2000
Embolisation of a catheter fragment is a rare mechanical complication of long-term central venous access devices. From 1995 to 1999 we observed 10 cases: the cause of embolisation was the 'pinch-off syndrome' in half of the cases, and in 8 cases out of 10 the fragment had embolised in the ...
Jonas M M - - 1999
OBJECTIVE: We have previously described an indicator dilution technique of measuring cardiac output in which lithium chloride is injected as a bolus via a central venous catheter and cardiac output derived from the arterial lithium dilution curve recorded from a lithium-selective electrode, which we have developed for this purpose. It ...
Andel H - - 1999
In severely burned patients the approach to the central vein is often difficult due to concomitant edema, but also due to the fact that the skin area, where commonly used approaches are performed, is burned as well, whereas the axillary region is often not involved. In order to perform an ...
Merry A F - - 1999
The Cook Pigtail central venous catheter (CVC) has been designed to diminish the risk of vascular perforation and consequent cardiac tamponade. With the participation of 12 consultant anaesthetists and 19 registrars, adults undergoing elective surgery were randomized to receive either a Pigtail (n = 101) or their consultant anaesthetists' "standard" ...
Khanna R - - 1999
Recently an increasing number of patients with complications related to pierced body jewellery have been seen. Often removal of the jewellery is indicated. Removal of these items may also be required for radiological purposes. If the doctor is familiar with the opening mechanism of the item, removal is not usually ...
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 ...
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