Search Results
Results 801 - 850 of 1196
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Hori T - - 1991
The authors describe an indwelling intraluminal shunt for use during graft bypass procedures of the cavernous internal carotid artery. The clinical use of this shunt in a patient with meningioma invading the right cavernous sinus is described. This shunt has also been found applicable during carotid endarterectomy, and should prove ...
Rerkamnuaychoke W - - 1991
In the tree shrew Tupaia glis, 5 or 6 small ramifying arterioles arose directly from the testicular artery and then gave off numerous small capillaries. The capillaries made a series of anastomoses with neighbouring counterpart capillaries to become a complicated network. Some of the capillaries drained into a small venule, ...
Welch E - - 1991
The ascending aorta-main pulmonary artery (central) polytetrafluoroethylene (PTFE) Gore-Tex shunt was introduced in 1975 by Gazzaniga and coworker. It is a widely used palliative procedure. We present a case study with an unusual late complication. An aneurysm was discovered at autopsy in a patient who was diagnosed at birth with ...
Lamberti J J - - 1991
The Damus-Kaye-Stansel operation is a useful technique for the treatment of complex cyanotic congenital heart disease when there is obstruction between the systemic ventricle and the aorta. Modifications of the technique include transection of the aorta and the pulmonary artery, anastomosis of the contiguous aortic and pulmonary walls, and connection ...
Kondo C - - 1991
Electrocardiographic-gated nuclear magnetic resonance (NMR) imaging has been shown to be effective for the evaluation of congenital heart disease, particularly in supracardiac regions. This study evaluated the postoperative status after a stage I palliative operation (Norwood procedure) for hypoplastic left heart syndrome. The NMR images from three patients were compared ...
Vorwerk D - - 1991
Self-expandable endoprostheses were used in 18 failing arteriovenous shunts after unsuccessful balloon dilatation. Technical success was satisfactory with an early patency in 17 of 18 shunts. Thrombosis right after stenting occurred in three shunts but was successfully treated in two. Follow-up history revealed recurrent events of reobstruction due either to ...
Bouwels L H - - 1991
Reconstructive surgery was performed in a 57-year old woman in whom initially the left coronary artery had originated from the pulmonary trunk, producing progressive symptoms of congestive heart failure. Recurrence of shunting was documented by Doppler echocardiography and contrast angiography, necessitating a second surgical intervention 17 months after the first ...
Thapar M K - - 1991
Agenesis of the intrapulmonary and extrapulmonary veins of the right lung was found by angiography and histological examination in a three year old boy. Blood supplied by the intersegmental arteries drained via the pulmonary arteries of the right lung into main and left pulmonary arteries. This caused a shunt between ...
Wagner R B - - 1991
Our purpose was to examine changes in pulmonary hemodynamics for patients with pulmonary contusion. Pulmonary vascular resistance index (PVRI) and shunt fraction were calculated from standard measurements in 25 traumatized patients. The percent of lung volume injured, measured as air-space filling disease (ASF), was quantitated from computed tomograms using a ...
Calliauw L - - 1991
A new method for evaluating the patency of a ventriculoatrial shunt is described, and early experience with it is reported. Transesophageal echocardiography can demonstrate a cerebrospinal fluid leak in the right atrium through the atrial tip of a shunting device. This capability was an incidental discovery, and since then the ...
Samdarshi T E - - 1991
The assessment of congenital aortopulmonary communications by transthoracic echocardiography may be suboptimal, particularly postoperatively, due to limited acoustic windows. We performed intraoperative transesophageal echocardiograms in six patients with eight proven systemic-pulmonary communications. Diagnosis included truncus arteriosus (1), aortopulmonary window (1), Waterston anastomosis (3), central Gore-Tex shunt (1), and modified left ...
Atta H M - - 1991
Splenocaval shunting was performed in 26 patients for the treatment of variceal bleeding. The indications for this alternative selective shunt were congenital anomalies of the left renal vein, inadequate outflow from the left renal vein on preoperative venography, or an anatomic relationship of the splenic vein favoring direct splenocaval rather ...
Fesslova V - - 1991
One-hundred and eleven patients with tricuspid atresia were seen during 1972-1982 and thirteen of these were not operated upon. The remaining 98 patients have undergone at least one operation. Those with low pulmonary blood flow had 1-4 shunt procedures; in 15 patients with high pulmonary blood flow the pulmonary artery ...
Calder A L - - 1991
Between February 1980 and June 1987, 42 shunts were placed in 39 infants with pulmonary atresia: 33 were modified Blalock-Taussig shunts with polytetrafluoroethylene (PTFE) and 9 were classic Blalock-Taussig shunts. There were four hospital deaths not related to the shunts. The remaining 35 patients were followed up for 1.6 months ...
Anderson S F - - 1991
Congenital optociliary shunt vessels have rarely been reported in the literature. Three cases of congenital optociliary shunt vessels are presented: two with unilateral shunt vessels and one with bilateral shunt vessels. All three patients were asymptomatic with good visual acuity and essentially normal visual fields with no apparent change in ...
Stauber R E - - 1991
In rats with partial portal vein ligation, 95 +/- 0.9% of the splenic blood flow is shunted from the portal to the systemic circulation when an intrasplenic injection of microspheres is used to determine the degree of shunting. Despite this magnitude of portal-systemic shunting, several biochemical and endocrine consequences of ...
Mascalchi M - - 1991
A patient with arterial hypertension and a history of cerebrovascular accidents presented with communicating normal-pressure hydrocephalus. Two weeks after ventriculo-peritoneal CSF shunt he had a fatal intracerebral hemorrhage. Delayed intracerebral hemorrhage is an extremely rare complication of ventricular CSF shunting, the possible mechanisms of which are briefly discussed.
Fournier D - - 1991
4 patients with acquired arteriovenous shunts located in the wall of an ectatic vein of Galen (VG) are reported. They represent so-called VG dural arterio-venous malformations (DAVM). These shunts involve the vasa vasorum normally present in the VG wall. Physiopathology, clinical signs and age groups are usually the same as ...
Savolaine E R - - 1991
A case of intrathoracic ventriculoperitoneal (V-P) catheter placement and migration resulting in hydrothorax is presented to direct attention to complications involving the thoracic segment of V-P shunt tubing. Inadequate catheter length and upper and lower thoracic segment disconnections are also discussed in addition to the role of radiography, nuclear medicine, ...
Nemec J J - - 1991
Contrast echocardiography is useful for detecting intrapulmonary right-to-left shunt lesions. In a patient with suspected pulmonary arteriovenous fistula, contrast transesophageal echocardiography was used to demonstrate the presence of a right-to-left shunt. By use of a combination of two-dimensional echocardiography, contrast injection, and pulsed Doppler echocardiography, each pulmonary vein was successfully ...
Li W Z - - 1991
In a study of 25 children with left-to-right intracardiac shunt we found a good correlation (r greater than 0.92; p less than 0.001) between right ventricular pre-ejection period/acceleration time, derived from pulsed Doppler echocardiography, and pulmonary artery systolic, diastolic, and mean pressures, measured at cardiac catheterization. This may enhance the ...
Schuknecht H F - - 1991
The external shunt operation on the endolymphatic sac is based on the concept that it will drain excess endolymph and thus arrest the progression of endolymphatic hydrops. We performed histological studies on 46 temporal bones from 13 cases of bilateral and 20 cases of unilateral Meniere's disease to evaluate the ...
Kjøller E - - 1991
A 37-yr-old man with angiolymphoid hyperplasia (Kimura's syndrome), who had been treated unsuccessfully for suspected asthma, was investigated due to a decrease in arterial oxygen saturation (86%). Right heart catheterization and angiography of the pulmonary artery failed to demonstrate any right-to-left shunts. However, simultaneous scintigraphy over the lungs, kidneys, and ...
Sainte-Rose C - - 1992
A retrospective study was conducted on 1,719 hydrocephalic patients, treated between 1974 and 1983 at the Hospital for Sick Children (Toronto) and l'Hôpital des Enfants Malades (Paris), in order to better understand shunt failure. The statistical analysis demonstrates the following: (1) A probability of occurrence of shunt malfunction of 81% ...
Dubois J - - 1991
A case of transcatheter occlusion of a modified Blalock-Taussig (BT) shunt with a detachable balloon is described. A three month old boy with pulmonary atresia with intact ventricular septum had a repair consisting in valvotomy and a modified BT. This palliative aorticopulmonary shunt created congestive heart failure. As an alternative ...
Inoue T - - 1990
This case report presents a fifty-four-year-old woman with right-to-left shunt in the atrium. It seemed clinically at first that the shunt was due to atrial septal defect. However, she also had pulmonary disease associated with rheumatoid arthritis and Sjögren's syndrome. At autopsy atrial septal defect was not evident, but a ...
Engelhardt W - - 1990
Severe cyanosis resulting from postoperative atrial right-to-left shunt is a life-threatening complication. We present a technique of transient transcatheter balloon closure of a patent foramen ovale in a newborn operated on for critical pulmonary stenosis, where the foramen ovale had been left open intraoperatively. Cardiac catheterization was performed under echocardiographic ...
Bridges N D - - 1990
Thirty-eight patients considered to be at increased risk for a Fontan repair underwent bidirectional cavopulmonary anastomosis. Twenty-one of the 38 had concurrent pulmonary artery reconstruction. Fontan risk factors included pulmonary artery distortion, elevated pulmonary artery resistance (greater than 2 Woods units) and/or pulmonary artery pressure (mean, greater than 18 mm ...
al-Mefty O - - 1990
During direct surgery of neoplastic and vascular lesions of the cavernous sinus, the intracavernous carotid artery may be injured beyond repair, or its total isolation may be necessary for surgical management of these lesions. The newly developed procedure of a saphenous vein graft bypass of the cavernous carotid artery allows ...
Kopf G S - - 1990
The first superior vena cava-pulmonary artery shunt (Glenn shunt) in our series was performed in February 1958. From then through September 1988, 91 patients have undergone this procedure for a wide variety of congenital defects. We here report follow-up data available on all patients. Ages ranged from 2 days to ...
Vincent J G - - 1990
A human venous homograft "Varivas R", in clinical use for 10 years for vascular access loops and femoropopliteal bypasses, has been used since December 1985 as a material for aortopulmonary shunts and other reconstructive procedures in congenital heart surgery. For this purpose vein segments 5 cm length, varying in diameter ...
Trusler G A - - 1990
A bold and imaginative development, the cavopulmonary anastomosis, appeared to originate in several centers almost simultaneously. After extensive research on right heart bypass, Glenn was the first in North America to perform a successful experimental cavopulmonary shunt, and it became known by his name. In properly selected patients, palliation success ...
Yamaki S - - 1990
Histometric analysis of pulmonary vascular disease was performed in 13 shunted and 21 nonshunted patients with tetralogy of Fallot, and in 29 normal controls. There was no significant difference in the medial thickness of the small pulmonary arteries between cases of tetralogy of Fallot and normal controls, but the media ...
Hawkins J A - - 1990
We examined the early and late results of operations in 29 consecutive neonates with pulmonary atresia and intact ventricular septum treated from 1980 to 1988. Transventricular pulmonary valvotomy and central aorta-pulmonary artery shunting were performed in 19 of 22 infants who had a patent infundibulum. Pulmonary valvotomy alone was performed ...
Yang D C - - 1990
Currently, Doppler ultrasound and contrast angiography are the main imaging procedures being used to evaluate arterial bypass shunts. IV radionuclide total body arteriography (TBA) is another useful imaging procedure for evaluation of bypass shunts. The authors reviewed 33 patients, 19 women and 14 men, ranging in age from forty-three to ...
Qureshi S A - - 1990
A male infant with tetralogy of Fallot was given a modified left Blalock-Taussig shunt at 11 days of age because of duct dependence. Twenty months later, because of increasing cyanosis and polycythaemia, he was given palliative treatment with balloon dilatation of the right ventricular outflow tract. Seven months later a ...
Ahmed Z - - 1990
In most critically ill unstable patients, continuous arteriovenous hemofiltration (CAVH) and continuous arteriovenous hemofiltration with dialysis (CAVHD) offer significant advantages over dialysis and ultrafiltration. Improvements in CAVH methodology have occurred since its introduction, but an ideal vascular access has yet to be designed. Scribner shunts may result in loss of ...
Inokuchi K - - 1990
It has been proved that selective decompression of esophageal varices can occur by way of the left gastric venous route or the transsplenic route. The left gastric venacaval shunt functions well over a long postoperative period, if the shunt is technically satisfactory; however, the distal splenorenal shunt (DSRS) can be ...
Strawn D J - - 1990
This study evaluates the incidence of defects on the intraoperative angiograms of 160 carotid endarterectomies performed in 146 patients, 81 of 160 (50.6%) with a shunt and 79 of 160 operations (49.4%) performed without a shunt. Angiographic defects were identified in 34 of 160 carotid endarterectomies (21%), of which 21 ...
Lamberti J J - - 1990
The bidirectional cavopulmonary shunt improves systemic arterial oxygen saturation without increasing ventricular work or pulmonary vascular resistance. Since 1983, 17 patients have undergone a cavopulmonary shunt procedure (five primary operations, 12 secondary operations). Diagnoses were single ventricle complex (n = 4), hypoplastic right heart syndrome (n = 10), and hypoplastic ...
Flores E D - - 1990
For the detection of left-to-right intracardiac shunting, the oximetric and standard indocyanine green techniques are relatively insensitive, in that neither can reliably detect a shunt with a ratio of pulmonary to systemic flow (Qp/Qs) less than 1.3 (percentage shunt, 23%). Although the hydrogen inhalation method is said to be much ...
Paul V E - - 1990
A 65-year-old man presented with acute inferior myocardial infarction and received thrombolytic therapy with clinical evidence of coronary arterial recanalisation. Recovery was uncomplicated until- the eighth day when he experienced recurrent chest pain with evidence of reinfarction in the same territory. This was associated with the development of a pansystolic ...
Vick G W GW - - 1990
Twelve patients more than 8 years of age with complex congenital heart disease were evaluated prospectively with nuclear magnetic resonance (NMR) imaging and with echocardiographic and angiographic imaging techniques. The subpulmonary region, main pulmonary artery, right and left pulmonary arteries, and aorticopulmonary shunts were clearly visualized by means of NMR ...
Sueblinvong V - - 1990
To assess the limitations of 2 Dimensional Color Doppler Echocardiography in the evaluation of cardiac anatomy in children with congenital heart disease. 2DCDE were performed in 140 infants and children before cardiac catheterization and/or operation or autopsy. The segmental echocardiographic analysis included determination of intracardiac, great artery, systemic venous and ...
Fukui A - - 1990
From May 1958 to May 1987, 331 digits were replanted successfully with an overall survival rate of 86.2%. Complete success in replantation of amputated fingers requires an accurate anastomoses of both arteries and veins. However, anastomosis between arteries may not be possible in some patients. Since reports that a thumb ...
Herrick I A - - 1990
Several indices have been introduced as convenient alternatives to calculation of the physiological shunt fraction (Qs/QT) for the assessment of pulmonary gas exchange. These include: the arterial-alveolar oxygen tension ratio (a/APO2), the arterial oxygen tension-inspired oxygen concentration ratio (PaO2/FIO2), the respiratory index (RI), [A-a)DO2/PaO2) and the alveolar-arterial oxygen tension difference ...
Stertmann W A - - 1990
Polytetrafluorethylene (PTFE) prostheses were implanted in 12 sheep as a shunt between the carotid artery and the jugular vein using an end-to-side anastomosis technique. This technique allows repeated tests of the pharmacological and toxicological safety of artificial kidney units after both single and multiple administration. Furthermore, it enables the investigation ...
Gleed R D - - 1990
In the quietly standing horse the bronchial arterial blood flow is low, 0.1-0.2% of the pulmonary arterial flow. In horses anaesthetized with halothane, the bronchial arterial flow is reduced by a greater fraction than that in the pulmonary artery. Thus the shunting through the bronchial circulation is decreased about 3-fold ...
Barros D'Sa A A - - 1989
A road accident victim was admitted in shock with an injured lower limb virtually dismembered at mid-thigh level. The early use of intraluminal shunts bridging both femoral artery and vein permitted an unhurried but logical sequence of wound debridement, bone stabilisation and optimal vascular repair rendering fasciotomy unnecessary. This approach ...
Wong C K - - 1989
Nifedipine has a vasodilatory effect on both the systemic and the pulmonary circulation. Its preferential effect on reducing the pulmonary vascular resistance has been studied in patients with primary pulmonary hypertension. In 4 patients with the Eisenmenger's syndrome complicating patency of the arterial duct (ductus arteriosus), we have studied the ...
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