Search Results
Results 601 - 650 of 1196
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Al Khouzaie T - - 1997
Platypnea-orthodeoxia is a rare pattern of dyspnea with arterial hypoxemia. Platypnea is defined as dyspnea induced by upright posture, and it is relieved by the recumbent position. Orthodeoxia refers to arterial desaturation resulting from assuming an erect or upright position. The case reported involves a 59-year-old man with profound, unexplained ...
DeCaprio J D - - 1997
The purposes of this study were to examine potential causes for arterial steal syndrome in patients with hemodialysis shunts and to evaluate the results of treatment. A retrospective analysis was performed on all hemodialysis patients who presented with arterial steal syndrome over a 3-year period. Medical records were reviewed to ...
Popp G - - 1997
An 80-year-old woman presented with progressive shortness of breath. There was no history of pulmonary or cardiac disease. Results of a physical examination were normal. She had significant oxygen desaturation while she was in an upright position. Admission to the hospital for workup followed, and evaluation included tilt-table transesophageal echocardiogram ...
Matsumoto K - - 1997
A 58-year-old male suffered a massive intratumoral hemorrhage after placement of a ventriculoperitoneal shunt before treatment for pineocytoma. At admission, he complained of headache, urinary incontinence, gait disturbance, and recent memory disturbance. His neurological examination revealed impaired memory and papilledema from hydrocephalus. Two days after the placement of the ventriculoperitoneal ...
Cozzens J W - - 1997
The authors describe a relationship between the presence of distal shunt catheter side-wall slits and distal catheter obstruction in a single-surgeon series of ventriculoperitoneal (VP) shunt revisions. Between 1985 and 1996, 168 operations for VP shunt revision were performed by the senior author (J.W.C.) in 71 patients. Indications for shunt ...
Sugiyama T - - 1997
We have investigated regenerated endothelial cells and their possible contribution to arterial dilation in response to increased blood flow in rat common carotid artery (CCA). After endothelial denudation using a balloon catheter in the left CCA, an arteriovenous shunt was constructed between the left CCA and the left external jugular ...
Wilkinson J M - - 1997
OBJECTIVES: To investigate the in vivo haemodynamic performance and neurological outcome of two types of carotid shunt. DESIGN: Randomised single surgeon study of consecutive symptomatic patients. SETTING: 163 consecutive patients undergoing carotid endarterectomy for symptomatic carotid disease were randomised to the Javid or Pruitt shunt. CHIEF OUTCOME MEASURES: Middle cerebral ...
Santamore W P - - 1997
BACKGROUND: Right ventricular failure can lead to circulatory collapse while on left ventricular assist device support. By shunting blood from the femoral vein to the left ventricular assist device, cardiac output can be increased, but arterial oxygen saturation will decrease. METHODS: To determine the effects on O2 delivery, a model ...
Durand E - - 1997
We report the case of a 50-yr-old man who experienced exertional dyspnea 5 mo after a left pneumonectomy for carcinoma. As the clinical features pointed toward a pulmonary embolism, we performed a ventilation plus perfusion radionuclide lung scan. It showed no evidence of pulmonary embolism, but it did show a ...
Salvian A J - - 1997
The purpose of this study was to identify whether EEG is an adequate method of monitoring cerebral perfusion during carotid endarterectomy and of determining the need for use of an indwelling shunt. A retrospective review of 305 carotid endarterectomies comparing the results of routinely shunted patients with patients selectively shunted ...
Rao P S - - 1997
Feasibility, safety, and effectiveness of transcatheter occlusion of atrial septal defect (ASD) with the buttoned device has been demonstrated. Despite its effectiveness in occluding secundum ASD with left-to-right shunt and patent foramina ovalia, presumably responsible for paradoxic embolism, it has limitations in effectively occluding ASD with evident right-to-left shunts. Therefore, ...
Tanihata H - - 1997
PURPOSE: To evaluate the use of impermeable silicone-covered Wallstents for transjugular intrahepatic portosystemic shunt creation. MATERIALS AND METHODS: A transjugular intrahepatic portosystemic shunt was created in 14 young swine (weight, 20-32 kg) by using impermeable silicone-covered Wallstents. In eight animals, the silicone covering extended from the portal vein to the ...
Prahlow J A - - 1997
The transjugular intrahepatic portosystemic shunt procedure is an effective intervention for patients with bleeding esophageal varices. Potential complications are numerous but rarely serious. A case of hemopericardium, cardiac tamponade, and death caused by perforation of the right atrium and aorta by a stent after embolization from the liver during stent ...
Ryo E - - 1997
We describe a case of congenital cystic adenomatoid malformation treated by thoracoamniotic shunting using a double-flower catheter. An ultrasound examination at 25 weeks' gestation revealed a cystic mass within the fetal thoracic cavity, hydrops and polyhydramnios. Thoracoamniotic shunting under ultrasound guidance using a double-flower catheter was performed at 27 weeks. ...
Godart F - - 1997
This report describes the case of a 67-year-old man in whom atrial right-to-left shunt developed after a right pneumonectomy, leading to dyspnea with severe arterial desaturation. Transcatheter occlusion of the patent foramen ovale was successfully performed using a buttoned device. Review of literature and mechanisms of these atrial right-to-left shunts ...
Rengachary S S - - 1997
OBJECTIVE AND IMPORTANCE: This report describes an important technical modification in ventriculoperitoneal shunting. CLINICAL PRESENTATION: A young woman presented with shunt malfunction caused by occlusion of the peritoneal catheter. Conventional sites for placement of distal catheter were unavailable or had been used up. INTERVENTION: After the installation of a ventriculopleural ...
Kikuchi S - - 1997
Numerous technical and physiologic problems have been described with conventional systemic-pulmonary artery shunts. We report the case of a 1-year-old girl in whom the internal thoracic artery was used to create a systemic-pulmonary artery shunt after the failure of a previous Blalock-Taussig shunt. The internal thoracic artery as an alternative ...
Gitzelmann R - - 1997
Hypergalactosaemia was found in 4 day-old boy during newborn screening. He had no enzyme deficiency but an intrahepatic vascular malformation permitting significant portosystemic venous shunting. The shunt caused hyperammonaemia, accentuated after meals, alimentary hyperglycaemia and hypergalactosaemia, and excess excretion of lactic, 3-hydroxy butyric and other organic acids in urine. Portal ...
Ponec R J - - 1997
The use of the transjugular intrahepatic portosystemic shunt to treat portal hypertension has resulted in increased recognition of its associated complications. We report a patient with refractory duodenal variceal bleeding treated with transjugular intrahepatic portosystemic shunt, as well as coil embolization, who subsequently developed bilateral cerebral and cerebellar infarcts consistent ...
Oliver T B - - 1997
A patient presented with chest pain, cyanosis and acute ischaemia of the left arm. Aortic dissection was considered to be the likely diagnosis. CT demonstrated multiple large pulmonary emboli and a serpiginous thrombus occluding the origin of the left subclavian artery. Venous thrombosis was proven. The sudden onset of cyanosis ...
Cochrane A D - - 1997
OBJECTIVE: To assess the impact of the bidirectional cavopulmonary shunt, total cavopulmonary connection, and baffle fenestration on outcome of the Fontan operation in our unit. METHOD: We reviewed 123 bidirectional cavopulmonary shunts and 264 Fontan operations performed from 1980 to 1995. Analysis of pulmonary artery size (right and left main ...
Albert A - - 1997
Transcranial Doppler sonography (TCD) is a simple method to detect a right-to-left cardiac shunt, although standardized procedures do not exist. In this study 69 patients were tested according to predetermined criteria and procedures (cluster of > 10 microbubbles, duration between injection in the cubital vein and detection in the middle ...
Haskal Z J - - 1997
PURPOSE: To evaluate the role of ultrasound (US) in the detection of elevated portosystemic gradients and loss of shunt function in patients with a transjugular intrahepatic portosystemic shunt (TIPS). MATERIALS AND METHODS: The authors' prospectively compared 151 Doppler hepatic sonograms with follow-up portal venograms in 64 patients with TIPS. Sonographic ...
Nawa S - - 1997
Among the congenital coronary artery fistulas, diffuse fistulation into the left ventricular chamber, usually expressed in terms of a coronary artery-left ventricular shunt, is not as rare today as was previously thought. However, the origin of such a shunt from all three major coronary arteries is rare. This paper reports ...
Gladman G - - 1997
BACKGROUND: The Blalock-Taussig shunt is considered a low-risk management option for palliation in tetralogy of Fallot, but the morbidity associated with a Blalock-Taussig shunt can have a significant impact on patient care. We reviewed the outcome for this operation in the current era. METHODS: Between 1990 and 1994, 65 children ...
Kuribayashi R - - 1997
To find out whether apico-aortic shunt may become an alternative support technique during surgery on the descending thoracic aorta, performance between apico-aortic shunt and aorto-aortic shunt was compared. In 5 sheep weighing 20-25 kg, apico-aortic shunt and aorto-aortic shunt were instituted with covalently bonded heparin coated polyvinyl tube (internal diameter ...
Chetty K G - - 1997
Bronchioloalveolar carcinoma caused severe refractory hypoxemia due to intrapulmonary shunting in a patient. Preoperative evaluation by occlusion of the pulmonary lobar artery supplying the tumor showed normalization of the arterial oxygen saturation. Resection of the involved lobe corrected the intrapulmonary shunting, and the patient required no further supplemental oxygen. However, ...
Moore T B - - 1997
We describe a patient who developed a paradoxical embolus to the brain during infusion of bone marrow. She had a patent foramen ovale through which right-to-left shunting led to multiple cerebral emboli. This complication can be prevented by positioning the tip of the infusion catheter in the main pulmonary artery ...
Aldridge S D - - 1997
PURPOSE: To examine the extended patency (> 24 hrs) of heparin-bonded intravascular shunts in a porcine model of vascular injury. PROCEDURES: Adult swine underwent bilateral, common iliac artery resection (n = 5) or bilateral common iliac vein resection (n = 5) and vessel replacement with interposition, heparin-bonded shunts. Three control ...
Allan J J - - 1997
Right-to-left intracardiac shunting across a patent foramen ovale (PFO) has been reported in patients with pulmonary embolism, right ventricular (RV) infarction, positive pressure ventilation with positive end-expiratory pressure, heart failure with left ventricular assist devices, cardiac tamponade, and unilateral diaphragmatic paralysis. The primary driving force for these shunts is a ...
Branco G - - 1997
We report a dural arteriovenous shunt on the superior petrosal sinus at the origin of the petrosal vein, and its treatment. This is the first report of transvenous embolisation of such a shunt through the contralateral occipital and transverse sinuses. It was possible to achieve complete obliteration of the superior ...
Rousseau H - - 1997
A hydrodynamic thrombectomy catheter was prospectively evaluated for the treatment of recently thrombosed vessels. A total of 52 consecutive patients (42 males and 10 females; mean age 64 +/- 15 years) presenting with acute or subacute occlusion of dialysis shunts (n = 25), peripheral bypass (n = 14) or native ...
Hudgins R J - - 1996
Thrombus is a frequent cause of shunt malfunction both of the proximal end following intraventricular hemorrhage and of the distal catheter of a vascular shunt. Continued blockages may result in numerous shunt revisions until the blood has been cleared. We have treated 3 children with shunt malfunctions secondary to thrombus ...
Schroth G - - 1996
OBJECTIVE: To determine if technetium Tc 99m-labeled macroaggregated albumin selective angioscintigraphy enables estimation of microparticle-arteriovenous shunt in branchial paragangliomas and nasopharyngeal angiofibromas. DESIGN: Technetium Tc 99m-labeled macroaggregated albumin particles with calibrated diameters between 25 and 50 microns were administered during selective catheterization of the feeding arteries in 4 branchial paragangliomas ...
Reddy V M - - 1996
OBJECTIVE: Our objective was to analyze changes in pulmonary artery size after bidirectional cavopulmonary shunt. METHODS: All 47 patients who underwent bidirectional cavopulmonary shunt between March 1990 and May 1995 who had preoperative and postoperative angiograms available for review were selected for study. This included 24 patients who had also ...
Overbosch E H - - 1996
PURPOSE: To evaluate mechanical thrombectomy of occluded hemodialysis access shunts with a recently developed hydrodynamic device. MATERIALS AND METHODS: Sixty-five thrombosed hemodialysis access shunts were treated in 49 patients. The shunts were of three types: Brescia-Cimino fistulas (24 procedures), polytetrafluoroethylene (PTFE; Gore-Tex) loop grafts (18 procedures), and manufactured homologous vein ...
Saltik I L - - 1996
A 12-year-old boy with tetralogy of Fallot was evaluated for increasing cyanosis and exercise intolerance. The patient had a right Blalock-Taussig shunt operation 11 years previously and a left modified Blalock-Taussig shunt operation one year previously. After demonstration of hypoplastic pulmonary arteries, the stenosed right Blalock-Taussig shunt and the totally ...
White R N - - 1996
The surgical treatment of intrahepatic portosystemic shunts in six cats is described. The preoperative diagnoses were based on the results of abdominal ultrasonography, and mesenteric portography was used during surgery to confirm the diagnosis and establish the morphology of the shunting vessel. In four of the cats the shunt vessel ...
Rebergen S A - - 1996
The objective of this study was to asses the feasibility and accuracy of magnetic resonance (MR) velocity mapping to calculate pulmonary-to-systemic flow ratio (Qp:Qs) in patients with a suspected or diagnosed atrial-level shunt. During a one-year period, all patients referred to our department for further evaluation of an atrial-level shunt ...
Byard R W - - 1996
Neurological and vascular complications of Arnold-Chiari malformation treated with ventriculoatrial shunting may result in sudden or unexpected death. Two patients with Arnold-Chiari malformation and ventriculoatrial shunting had variable clinical manifestations and diagnostic difficulties. A 3-year-old girl with a 1-day history of right-sided heart failure died unexpectedly soon after cardiac catheterization. ...
Montanari M - - 1996
A 58-year-old woman with a long history of well-compensated postnecrotic cirrhosis with acute massive ascites and right-sided pleural effusion was admitted. The injection of colorant and radioactive material into the peritoneal cavity didn't show up any passage through the diaphragm. After resuscitation therapy and insertion of abdominal and chest tube, ...
Miyamura H - - 1996
Three infants with congenital cyanotic heart disease encountered severe hypoxemia during a Blalock-Taussig shunt procedure using a right thoracotomy approach. Pericardiotomy was performed and venovenous extracorporeal membrane oxygenation was instituted using right atrial canulation. The shunt procedure was completed with good oxygenation and hemodynamic stability in all cases. Venovenous extracorporeal ...
Saxon R R - - 1996
PURPOSE: A comparative histologic analysis of human and swine transjugular intrahepatic portosystemic shunts (TIPS) was performed to investigate factors limiting TIPS patency and to further develop an animal model for TIPS. MATERIALS AND METHODS: Twenty-one human and 13 porcine shunts were evaluated by means of gross inspection, histologic evaluation, and ...
Müller-Hülsbeck S - - 1996
As an alternative to chemical thrombolysis, an acutely occluded transjugular intrahepatic portosystemic stent shunt in a 72-year-old woman was successfully recanalized using a 5 Fr rheolytic catheter system. No adjunctive thrombectomy treatment was necessary. The underlying stenotic leason was treated with percutaneous transluminal angioplasty and a Palmaz stent. Immediately after ...
Breuer J - - 1996
Serotonin (5HT) is a potent vasoconstrictor of the pulmonary vascular bed and may be involved in the pathophysiology of secondary pulmonary hypertension in children with a left-to-right shunt due to a congenital heart defect. To test this hypothesis we measured the total and free 5HT concentration in blood as well ...
Hunt G B - - 1996
A novel surgical approach, using portal venotomy during total hepatic vascular occlusion, was used to locate and attenuate congenital intrahepatic portosystemic shunts in nine dogs. Shunt location was consistent with a persistent ductus venosus in only two dogs. In the remaining seven dogs the shunts were window-like orifices arising from ...
van der Heijde R M - - 1996
We reported the case of a patient in whom severe, and ultimately fatal, pulmonary hypertension developed 1.5 yrs after transjugular intrahepatic portosystemic shunt (TIPS). Pulmonary artery pressures were not affected by 100% oxygen, prostacyclin or nifedipine. Postmortem examinations showed pulmonary and vascular abnormalities typical of pulmonary hypertension. Pulmonary artery pressures ...
Alleyne C H CH - - 1996
We describe a patient with pseudotumor cerebri for which a lumboperitoneal (LP) shunt was placed. After a pseudomeningocele was noted at the lumbar incision site, an LP shunt revision was done, at which time migration of the catheter into the thecal sac was noted. Three months later, radiologic studies revealed ...
Peterson S L - - 1996
Simultaneous chylothorax and chylous ascites related to intestinal lymphangiectasia was diagnosed in a 4-year-old spayed female dog. Palliative pleural and peritoneal drainage was accomplished by placement of fenestrated silastic sheeting into surgically created diaphragmatic defects, and implantation of a pleuro-peritoneal venous shunt. The immediate postoperative period was complicated by acute ...
Harrison M J - - 1996
This technical note describes a simple percutaneous mechanism for placement of the atrial end of ventriculoatrial shunts. The method is fast, efficient, and involves no neck dissection. No special equipment is required. Placement involves the technique of central line insertion familiar to all surgeons. This new method has been used ...
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