Search Results
Results 501 - 550 of 1198
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Bihari I - - 2001
BACKGROUND: Sclerotherapy of telangiectasias is widely used for their treatment, but causes skin ulceration in 0.2-1.2% of patients. The cause of this complication is still unclear. OBJECTIVE: We hypothesized that an arteriole is occluded because the sclerosant gets into an arteriovenous (AV) shunt. We have looked for these communications underneath ...
Nomura K - - 2001
Acute pulmonary thromboembolism in a patient who had undergone bidirectional Glenn anastomosis was treated by percutaneous selective intravascular thrombolysis. A 20-year-old woman was diagnosed with pulmonary stenosis and right ventricular hypoplasia, complete occlusion of the left pulmonary artery secondary to a Blalock-Taussig shunt, and atrial septal defect. The patient developed ...
Steinhorn R H - - 2001
Congenital heart disease associated with increased pulmonary blood flow produces pulmonary hypertension. To characterize vascular alterations in the nitric oxide (NO)-cGMP cascade induced by increased pulmonary blood flow and pulmonary hypertension, 10 fetal lambs underwent in utero placement of an aortopulmonary vascular graft (shunt). When the lambs were 4-6 wk ...
Hull D A - - 2001
Anastomosis of the ascending aorta to the right pulmonary artery, the so-called Waterston shunt, was undertaken as a palliative procedure for children with cyanotic congenital heart disease due to obstruction of the pulmonary outflow tract with reduced pulmonary blood flow. We present the clinicopathological correlations in two patients who underwent ...
Abeia G S - - 2001
A model to assess thrombus formation following vascular injury was evaluated using various interventional systems. The model consisted of a 'stretchable' shunt box that served as an arteriovenous shunt between the carotid artery and jugular vein in dogs. Arterial homografts obtained from both carotid and femoral arteries were mounted between ...
Granchi T - - 2000
BACKGROUND: Temporary arterial shunts maintain perfusion while surgeons postpone arterial repairs. The common indications are combined orthopedic and vascular injuries and damage control. The duration of patency and the need for systemic anticoagulation remain in question. We examined our experience for answers. METHODS: We searched for patients who had temporary ...
Grubhofer G - - 2000
To determine the thresholds of selective shunting in carotid endarterectomy during general anesthesia, we compared transcranial Doppler ultrasonography and cerebral oximetry (RSO2). During carotid cross-clamping, RSO2 and mean blood flow velocity in the middle cerebral artery (Vm,mca) was simultaneously monitored in 55 of 59 patients. A relative decrease in Vm,mca ...
Wilmshurst P T - - 2000
BACKGROUND: A relation between migraine with aura and cardiac right-to-left shunts has been reported. Right-to-left shunts are also associated with stroke and certain forms of decompression illness. We investigated the effect of closure of right-to-left shunts on migraine symptoms. METHODS: A consultant neurologist, who was unaware of information about residual ...
Kuwaki K - - 2000
We present 2 cases of huge aneurysm of the main pulmonary artery without significant pulmonary artery hypertension or intracardiac shunt. Both patients underwent surgery where resection of the aneurysm and graft replacement, using Hemashield prosthesis (Meadox Medicals, Oakland, NJ), was performed. They are now leading normal lives without any symptoms.
Koike T - - 2000
The prognosis of a fetus with hydrothorax at mid-trimester is extremely poor. We encountered a fetus who developed bilateral chylothoraxes at 23 weeks of gestation. Bilateral pleuroamniotic shunts with double-basket catheters were successfully installed at 25 weeks of gestation. Hydrothorax did not recur in this fetus. After the shunting, however, ...
Aeba R - - 2000
OBJECTIVES: Although the arterial oxygen saturation after bidirectional cavopulmonary shunting should theoretically be homogeneous if additional pulmonary flow is obliterated, the arterial oxygen saturation has been found to vary in clinical practice. Knowledge of the preoperative and operative determinants of arterial oxygen saturation early after bidirectional cavopulmonary shunting may lead ...
Gehring J E - - 2000
Three cases are reported in which placement of a vesicoamniotic shunt in utero for the treatment of obstructive uropathy led to the rare complication of abdominal wall hernia. All 3 patients underwent vesicoamniotic shunt placement for severe oligohydramnios and a markedly dilated bladder in an effort to preserve renal function ...
Dominguez C J - - 2000
We describe the case of a child in whom proximal migration of the peritoneal catheter and extrusion of the ventricular catheter resulted in the entire ventriculo-peritoneal shunt along with the shunt chamber (Orbis Sigma II valve) lying in a sub-galeal pocket in the occipital region in a tightly coiled fashion. ...
Faller M - - 2000
We report the case of a 71-year-old man bearing a severe right-to-left shunt through a patent foramen ovale in the absence of elevated right-sided heart or pulmonary artery pressures. He presented with platypnea-orthodeoxia syndrome, but he had no pulmonary or extracardiac diseases that are known to be associated with this ...
Bousamra M M - - 2000
OBJECTIVES: We characterized the morphology and vasomotor responses of a localized, high-flow model of pulmonary hypertension. METHODS: An end-to-side anastomosis was created between the left lower lobe pulmonary artery and the aorta in 23 piglets. Control animals had a thoracotomy alone or did not have an operation. Eight weeks later, ...
Loftus C - - 2000
The author has developed a new silicone carotid artery shunt (Loftus carotid endarterectomy shunt, Integra NeuroCare, Plainsboro, New Jersey) which offers several advantages over previously available commercial products. It is designed as an indwelling 15 cm (short) shunt, without an external loop. The silicone material makes for simple insertion and ...
Kalangos A - - 2000
A new bovine mesenteric venous graft 3 or 4 mm in diameter was used for performing systemic pulmonary artery shunts in six cyanotic newborns (aged 2 to 30 days) from March 1997 onward. Clinical and echocardiographic studies proved that all shunts were patent and functioning well after an average of ...
Zizka J - - 2000
OBJECTIVE: The purpose of the study was to evaluate the long-term clinical efficacy of Doppler sonography in revealing failure of transjugular intrahepatic portosystemic shunts (TIPS). SUBJECTS AND METHODS: During a 5-year period, 1192 Doppler examinations were performed in 216 patients with TIPS. No regular follow-up shunt venography was performed. Doppler ...
Panoutsopoulos G - - 2000
A 56-yr-old man, two months after an operation for an acoustic neurinoma, gradually developed dyspnea. Massive pulmonary embolism (MPE), with a significant right-to-left (R-L) shunt, was seen in a perfusion scan of the lungs with Tc-99m MAA. Radioactivity was noted in the thyroid, spleen, kidneys and brain. A cardiac ultrasound ...
Shin M - - 2000
Isolated fourth ventricle (IFV) is a rare complication in patients who undergo shunt placement, and it is not easily corrected by surgical procedures. The authors report a case of IFV that was successfully treated with an aqueductal stent placed under direct visualization by using a neuroendoscope. This 36-year-old suffered meningitis ...
Tsurushima H - - 2000
Programmable valves are often used for ventriculoperitoneal (VP) shunts with the shunt valve positioned on the chest wall. Three cases of shunt problems occurred due to placement of the valve on the chest wall. A 43-year-old male was treated with a VP shunt, and suffered shunt malfunction due to dislocation ...
Alkhulaifi A M - - 2000
BACKGROUND: Systemic pulmonary shunt remains a major strategy for the palliation of cyanotic lesions in neonates despite the associated morbidity and mortality. METHODS: Between March 1993 and December 1998, 79 systemic pulmonary shunts were performed in 75 neonates with cyanosis and severely reduced pulmonary blood flow. The mean age was ...
Ohkuma H - - 2000
Chronic hydrocephalus after aneurysmal sub-arachnoid haemorrhage (SAH) is easily diagnosed in most cases. However, the diagnosis is sometimes difficult in borderline cases, in which (a) pathognomonic clinical deterioration due to hydrocephalus is masked by the neurological deficits caused in the acute stage of SAH and (b) ventricular enlargement is not ...
Vick R N - - 2000
Urethral atresia and alveolar capillary dysplasia (ACD) are rare congenital malformations. Urethral atresia is associated with severe pulmonary hypoplasia secondary to oligohydramnios. ACD is associated with pulmonary venous misalignment, results in severe pulmonary hypertension, and is uniformly fatal. We present a case of urethral atresia with successful, early placement of ...
Choe K O - - 2000
High-resolution computed tomography (HRCT) was carried out in 36 patients with congenital left-to-right shunt disease and 10 normal control subjects to assess the feasibility of CT in the evaluation of pulmonary hemodynamics. The patients had a left-to-right or a bidirectional shunt and the hemodynamic data obtained by cardiac catheterization in ...
White R N - - 2000
The biplanar umbilical vein portovenograms of 49 newborn puppies and the biplanar mesenteric vein portovenograms, obtained during surgery, of 42 adult dogs with left divisional intrahepatic portosystemic shunts consistent with a patent ductus venosus (PDV) were reviewed. On the basis of the combined surgical, postmortem and imaging data, the left ...
El-Said H G - - 2000
Patients with unrepaired pulmonary artery atresia and ventricular septal defect (PA/VSD) depend on aortoplumonary collaterals and surgically created shunts for pulmonary blood flow. These vessels frequently develop stenoses with time, leading to hypoperfusion of lung segments and systemic hypoxemia. The purpose of this article is to describe catheter palliation of ...
Tsukui H - - 2000
A 7-year-old boy underwent ventricular and atrial septal defect patch closures, pulmonary valvulotomy, left pulmonary artery dilatation, and bicaval Glenn shunt, which maintained good patency between the superior vena cava and right atrium, because of a reduced right ventricular end-diastolic volume (RVEDV). The RVEDV had increased at 15 years of ...
Bartynski W S - - 2000
We describe the adult radiographic shuntogram, a simple method to evaluate the function and patency of a ventriculoperitoneal or ventriculoatrial shunt. The procedure involves placing contrast material into the valve of a shunt system and following the flow for appropriate clearing of contrast agent from the shunt tubing. Twenty-three studies ...
Chen Y W - - 2000
BACKGROUND AND PURPOSE: Patients with carotid-cavernous fistula (CCF) may undergo direct or indirect shunting. Ultrasonography has value that is complementary to angiography in the assessment and follow-up of these patients. The aim of this study was to characterize findings provided by carotid duplex sonography (CDS) and transcranial color-coded duplex sonography ...
Patel N H - - 2000
PURPOSE: To test the technical feasibility of creating a left ventricle to coronary sinus shunt using endovascular techniques. MATERIALS AND METHODS: By means of a right jugular vein approach, a needle puncture was made from the coronary sinus to the left ventricle in 10 dogs. The tracts were balloon dilated ...
Chen M R - - 2000
A 2-year-10-month-old boy was diagnosed with a complex congenital heart disease: right atrial isomerism, left superior vena cava (LSVC), complete atrioventricular septal defect, secundum type atrial septal defect, transposition of the great arteries with pulmonary atresia, patent ductus arteriosus, absence of a right superior vena cava (RSVC), and dextrocardia. He ...
Hellberg A - - 2000
OBJECTIVES: to evaluate the effect of a modified aortic shunt on central haemodynamic variables during experimental thoracic aortic occlusion in a prolonged spinal cord ischaemia model. MATERIAL AND METHODS: central haemodynamic variables were evaluated during aortic cross-clamping. In the shunt group (n=11), after the placement of proximal and distal aortic ...
Moore J W - - 2000
The aim of this study was to review contemporary techniques, devices, and results of transcatheter occlusion of surgical shunts in 2 pediatric cardiac programs. Closure of superfluous surgical shunts may reduce cardiac work and risk of endocarditis. Previous studies have shown that transcatheter closure of shunts is feasible, but have ...
Visser G H - - 2000
OBJECTIVES: to analyse whether preoperative transcranial Doppler (TCD) variables can predict intraoperative shunt requirement. DESIGN AND METHODS: the blood-flow velocity (BFV) in the major basal cerebral arteries was measured preoperatively with TCD, in 178 patients scheduled for CEA. Carotid artery compression and CO2 reactivity tests were also performed. Intraoperative electroencephalography ...
Takeda M - - 2000
A surgical procedure is described that was carried out to treat an 18-month-old boy with tetralogy of Fallot, right aortic arch, and isolation of the left subclavian artery. The patient underwent a descending aorta-right pulmonary artery shunt using a polytetrafluoroethylene graft, as a systemic-pulmonary shunt. The effectiveness of this procedure ...
Ong J P - - 2000
Since the introduction of transjugular intrahepatic portosystemic shunt (TIPS) 10 years ago, it has been used increasingly in the management of portal hypertension and its complications. TIPS is now considered the procedure of choice for management of refractory variceal bleeding. Its role in the management of refractory ascites, hepatic hydrothorax, ...
Limsuwan A - - 2000
Coil occlusion of Blalock-Taussig shunts has been associated with a high rate of device embolization. We describe a technique consisting of transvenous snaring and exteriorization of a guidewire advanced through a modified left Blalock-Taussig shunt, allowing distal shunt flow control and successful coil occlusion of the shunt. Cathet. Cardiovasc. Intervent. ...
Friedman M H - - 2000
Experiments were carried out in swine to test the hypothesis that changes in the fluid dynamic environment of the arterial wall, with time constants of several minutes to perhaps a few hours, prompt adaptive responses that transiently increase endothelial permeability. After parenteral Evans Blue Dye (EBD) administration, the hemodynamics of ...
Kang S - - 2000
BACKGROUND: The clinical usefulness of lumboperitoneal (LP) shunts in selecting patients with communicating hydrocephalus after aneurysmal subarachnoid haemorrhage (SAH) was compared with that of ventriculoperitoneal (VP) shunts. METHOD: Chronic hydrocephalus was defined as clinically and radiographically demonstrated hydrocephalus which lasted 3 weeks or longer after the original haemorrhage and which ...
Illuminati G - - 2000
BACKGROUND: Bleeding from duodenal varices are often severe (mortality as high as 40%), and more difficult to sclerose than esophageal varices. We report a patient with a bleeding duodenal varix, refractory to sclerotherapy, successfully treated by the association of portosystemic shunt placement and varix embolization, via the same transjugular intrahepatic ...
Cijan A - - 2000
At 10 years of age and again at 25, our patient had been treated for pulmonary tuberculosis due to the presence of a localized pulmonary shadow. Coronary angiography at age 59 revealed 3 fistulous communications: from the right and circumflex coronary arteries and from the left bronchial artery. All 3 ...
Jones J G - - 2000
There is an extensive literature on methods for discriminating between an increased shunt and a reduced ratio of ventilation to perfusion. In this review we prefer the terms "VA/Q" and "reduced or low VA/Q" rather than "V/Q inequality" to refer to the effects on arterial oxygenation of reducing V/Q below ...
Ichida F - - 1999
The purpose of this study was to assess the capability of multiplanar cine magnetic resonance imaging (MRI) for evaluating pre- and post-operative pulmonary circulation in patients with pulmonary atresia and severe pulmonary stenosis. Seventy-three multiplanar cine MRIs were performed in 30 patients, aged 1 month to 7 years (mean age, ...
Hoyer M H - - 1999
A 15-year-old girl with previous repair of a complex cyanotic congenital heart defect had persistence of a modified left Blalock-Taussig shunt that could not be ligated at surgery. Six years later, antegrade delivery of a Gianturco-Grifka Vascular Occlusion Device resulted in complete closure of the shunt. Cathet. Cardiovasc. Intervent. 48:365-367, ...
Haskal Z J - - 1999
PURPOSE: To determine whether polytetrafluoroethylene (PTFE) stent-grafts yield longer patency for creation or revision of transjugular intrahepatic portosystemic shunts (TIPS). MATERIALS AND METHODS: Fourteen PTFE-covered Wallstents were placed in 13 patients with TIPS: seven at shunt creation and seven during revision of TIPS with one to five prior thromboses at ...
Herry I - - 1999
This report presents the case of a 73 yr-old female in whom kyphoscoliosis, osteoporotic vertebra compression fractures and sternal injury resulted in severe respiratory failure and hypoxaemia. Pulmonary function testing showed moderate restrictive pattern and rare mismatches were found on lung ventilation/perfusion scanning. Transoesophageal echocardiography with contrast studies showed abnormal ...
Boigner H - - 1999
Today some authors consider univentricular repair a contraindication for postoperative cardiac extracorporeal membrane oxygenation (ECMO). The question is whether or not ECMO is indicated as pulmonary support in case of an overwhelming pulmonary infection during the postoperative course after a Norwood procedure. During the prolonged weaning period after a Norwood ...
Westra S J - - 1999
PURPOSE: To study whether electron-beam computed tomography (CT) is as accurate as conventional angiocardiography for the characterization of the true pulmonary arteries and the aortopulmonary collateral vessels in children undergoing surgical correction for pulmonary atresia. MATERIALS AND METHODS: Twenty-three children with pulmonary atresia underwent 48 cardiac-triggered dynamic contrast material-enhanced electron-beam ...
Kimura K - - 1999
We herein report the case of a patient who had paradoxical brain embolism owing to a pulmonary arteriovenous fistula (PAVF) who was diagnosed as having a right-to-left shunt by transcranial Doppler (TCD) with saline contrast medium. TCD with saline contrast medium failed to detect any high-intensity transient signals immediately after ...
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