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Predictive value of preoperative albumin-bilirubin score and other risk factors for short-term outcomes after open pancreatoduodenectomy

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World Journal of Clinical Cases 2023年第26期11卷 6051-6065页

作者： Hana Zavrtanik Davide Cosola David Badovinac Benjamin Hadžialjević Gašper Horvat Danaja Plevel Selene Bogoni paola tarchi Nicolòde Manzini AlešTomažič Department of Abdominal Surgery University Medical Centre LjubljanaLjubljana 1000Slovenia Clinica Chirurgica Azienda Sanitaria Universitaria Giuliano IsontinaCattinara HospitalTrieste 34149Italy Department of Medical Surgical and Health SciencesUniversity of TriesteTrieste 34149Italy Faculty of Medicine University of LjubljanaLjubljana 1000Slovenia

BACKGROUND Pancreatoduodenectomy represents a complex procedure involving extensive organ resection and multiple alimentary *** is still associated with high morbidity,even in high-volume *** tools including preoperative patient-related factors to preoperatively identify patients at high risk for postoperative complications could enable tailored perioperative management and improve patient *** To evaluate the clinical significance of preoperative albumin-bilirubin score and other risk factors in relation to short-term postoperative outcomes in patients after open *** This retrospective study included all patients who underwent open pancreatic head resection(pylorus-preserving pancreatoduodenectomy or Whipple resection)for various pathologies during a five-year period(2017-2021)in a tertiary care setting at University Medical Centre Ljubljana,Slovenia and Cattinara Hospital,Trieste,***-term postoperative outcomes,namely,postoperative complications,postoperative pancreatic fistula,reoperation,and mortality,were evaluated in association with albumin-bilirubin score and other risk *** logistic regression models were built to identify risk factors associated with these short-term postoperative *** Data from 347 patients were *** complications,major postoperative complications,postoperative pancreatic fistula,reoperation,and mortality were observed in 52.7%,22.2%,23.9%,21.3%,and 5.2%of patients,*** was no statistically significant association between the albumin-bilirubin score and any of these short-term postoperative complications based on univariate *** controlling for other predictor variables in a logistic regression model,soft pancreatic texture was statistically significantly associated with postoperative complications[odds ratio(OR):2.09;95%confidence interval(95%CI):1.19-3.67];male gender(OR:2.12;95%CI:1.15-3.93),soft pan

关键词： Pancreatoduodenectomy Albumin Bilirubin Postoperative complications Pancreatic fistula Perioperative care

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Film cooling adiabatic effectiveness measurements of pressure side trailing edge cooling configurations

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Propulsion and Power Research 2015年第4期4卷 190-201页

作者： R.Becchi B.Facchini A.Picchi L.tarchi D.Coutandin S.Zecchi Department of Industrial Engineering University of FlorenceVia S.Marta 350139FirenzeItaly GE Avio S.r.l. Via I Maggio 9910040Rivalta di TorinoTorinoItaly

Nowadays total inlet temperature of gas turbine is far above the permissible metal temperature;as a consequence,advanced cooling techniques must be applied to protect from thermal stresses,oxidation and corrosion the components located in the high pressure stages,such as the blade trailing edge.A suitable design of the cooling system for the trailing edge has to cope with geometric constraints and aerodynamic demands;state-of-the-art of cooling concepts often use film cooling on blade pressure side:the air taken from last compressor stages is ejected through discrete holes or slots to provide a cold layer between hot mainstream and the blade *** the goal of ensuring a satisfactory lifetime of blades,the design of efficient trailing edge film cooling schemes and,moreover,the possibility to check carefully their behavior,are hence necessary to guarantee an appropriate metal temperature *** this purpose an experimental survey was carried out to investigate the film covering performance of different pressure side trailing edge cooling systems for turbine *** experimental test section consists of a scaled-up trailing edge model installed in an open loop suction type test *** of adiabatic effectiveness distributions were carried out on three trailing edge cooling system *** baseline geometry is composed by inclined slots separated by elongated pedestals;the second geometry shares the same cutback configuration,with an additional row of circular film cooling holes located upstream;the third model is equipped with three rows of in-line film cooling *** have been performed at nearly ambient conditions imposing several blowing ratio values and using carbon dioxide as coolant in order to reproduce a density ratio close to the engine conditions(DR¼1.52).To extend the validity of the survey a comparison between adiabatic effectiveness measurements and a prediction by correlative approach was performed to comp

关键词： Turbine blades Trailing edge Film cooling Pressure sensitive paint(PSP)

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