Search results for "Bypass"

Geometria e funzionalità delle corsie di bypass per la svolta a destra

2013

OBIETTIVO PUNTATO SULL’INCREMENTO DELLA CAPACITA' DELLE INTERSEZIONI A ROTATORIA CONVENZIONALI E INNOVATIVE ATTRAVERSO L’IMPIEGO DEI BYPASS PER LA SVOLTA A DESTRA, TIPOLOGIA DI INFRASTRUTTURA STRADALE I CUI PRINCIPALI CRITERI COMPOSTIVI E LE CUI PROCEDURE DI DIMENSIONAMENTO DEGLI ELEMENTI MODULARI VENGONO DESCRITTI NEL DETTAGLIO DAGLI AUTORI. PRESI IN ESAME, ANCHE I PIù RECENTI MODELLI MATEMATICI PER LA STIMA DELLA CAPACITà DELLE CORSIE DI BYPASS E DELLA CAPACITà SEMPLICE DEGLI INGRESSI IN ROTATORIA.

Proliferative activity in stenotic human aortocoronary bypass grafts

2002

Abstract Background: Aortocoronary bypass graft disease is responsible for long-term failure of autologous vein grafts. The analyses of proliferation and cell type characterisation in human bypass grafts harvested during re-do surgery make it possible to investigate the cellular processes leading to bypass graft failure. Methods: 30 stenotic vein grafts and 25 control veins were explantated during re-do heart surgery procedures. The total area and cell count of the neointima, media and adventitia were calculated computer-assisted. Actively proliferating cells were identified using antibody to Ki-67 and positive cells were determined by double-label immunocytochemistry with SMC α-actin, CD 3…

Endoluminal Stent-Graft Relining of Visceral Artery Bypass Grafts to Treat Perigraft Seroma

2013

PURPOSE: To describe the endovascular treatment of intra-abdominal perigraft seromas associated with small-caliber expanded polytetrafluoroethylene (ePTFE) grafts. CASE REPORTS: Two patients who underwent hybrid repair of thoracoabdominal aortic aneurysms in which renovisceral bypass grafts were implanted presented with large, symptomatic perigraft seromas. The 5- to 8-mm-diameter ePTFE bypass grafts believed to be involved in the seromas were successfully relined with self-expanding Viabahn stent-grafts in percutaneous procedures. The patients' symptoms were relieved, and imaging follow-up (18 and 10 months, respectively) has shown near complete resorption of the seromas. CONCLUSION: It is…

PARATHYROID HORMONE INCREASES AFTER ORAL PEPTONES ADMINISTRATION IN OBESE SUBJECTS TREATED WITH ROUX-EN-Y GASTRIC BYPASS SURGERY: ROLE OF PHOSPHATE O…

2008

Guida alla refertazione degli esami TC a 64 strati dei bypass aorto-coronarici

2006

Jejunoileal bypass as the main procedure in the onset of immune-related conditions: the model of BADAS

2013

Bariatric surgery represents a common approach for the control of severe morbid obesity, reducing caloric intake by modifying the anatomy of the gastrointestinal tract. Following jejunoileal bypass, a large spectrum of complications has been described, with rheumatic manifestation present in up to 20% of cases. Although bowel bypass syndrome, also called blind loop syndrome, is a well-recognized complication of jejunoileal bypass, the same syndrome was recognized in patients who had not had intestinal bypass surgery, and the term the 'bowel-associated dermatosis-arthritis syndrome' (BADAS) was coined. The pathogenesis of BADAS is as yet poorly understood and only few data concerning this is…

A106 Gastroesophageal reflux disease in patients with severe obesity and type 2 diabetes one year after sleeve gastrectomy or Roux-en-Y gastric bypas…

2019

The effect of alternating different water qualities on accumulation and leaching of solutes in a Mediterranean cracking soil

2002

The relevance of bypass flow on water flow, solute or pesticide transport is becoming increasingly recognized. Recent investigations proved that soil salinization may be influenced by bypass flow, i.e. the rapid transport of water and solutes via macropores and/or shrinkage cracks to subsoil and groundwater. This paper explores the role of bypass flow in the process of accumulation and leaching of solutes, as well as of sodium, in a Mediterranean cracking soil irrigated with saline/sodic waters. The results of bypass flow experiments performed on undisturbed soil cores showed that leaching of solutes occurred in concomitance with bypass fluxes when a low salinity solution was alternated wit…

Carbon monoxide improves cardiac energetics and safeguards the heart during reperfusion after cardiopulmonary bypass in pigs

2004

Ischemia-reperfusion injury, a clinical problem during cardiac surgery, involves worsened adenosine trisphosphate (ATP) generation and damage to the heart. We studied carbon monoxide ( CO) pretreatment, proven valuable in rodents but not previously tested in large animals, for its effects on pig hearts subjected to cardiopulmonary bypass with cardioplegic arrest. Hearts of CO-treated pigs showed significantly higher ATP and phosphocreatine levels, less interstitial edema, and apoptosis of cardiomyocytes and required fewer defibrillations after bypass. We conclude that treatment with CO improves the energy status, prevents edema formation and apoptosis, and facilitates recovery in a clinical…

Electrophysiologic evaluation of phrenic nerve and diaphragm function after coronary bypass surgery: Prospective study of diabetes and other risk fac…

2006

Objective Phrenic neuropathy after coronary artery bypass grafting has been related to various risk factors with conflicting results. The aim of this study was to assess the incidence, characteristics, and clinical consequences of phrenic neuropathy and the influence of diabetes and other risk factors. Methods We conducted an observational, prospective study of parallel groups including 94 consecutive patients subjected to coronary artery bypass grafting, half of them with diabetes and associated polyneuropathy . Electrophysiologic study of phrenic nerve conduction as the reference method, chest radiography, diaphragm ultrasound, and functional respiratory tests were performed 24 to 48 hour…