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364篇 您的检索式:作者名="ROBERTO P"
    题名 作者 年代 出处 被引量
1Radiofrequency ablation for treatment of hypersplenism: A feasible therapeutic option显示文摘We present a case of a patient with hypersplenism secondary to portal hypertension due to hepato-splenic schistosomiasis, which was accompanied by severe and refractory thrombocytopenia. We performed spleen ablation and measured the total spleen and ablated volumes with contrast-enhanced computed tomography and volumetry. No major complications occurred, thrombocytopenia was resolved, and platelet levels remained stable, which allowed for early treatment of the patient's underlying disease. Previous work has shown that splenic radiofrequency ablation is an attractive alternative treatment for hypersplenism induced by liver cirrhosis. We aimed to contribute to the currently sparse literature evaluating the role of radiofrequency ablation(RFA) in the management of hypersplenism. We conclude that splenic RFA appears to be a viable and promising option for the treatment of hypersplenism.Guilherme Lopes P Martins Joao Paulo G Bernardes Marcello S Rovella Raphael G Andrade Publio Cesar C Viana Paulo Herman Giovanni Guido Cerri Marcos Roberto Menezes 2015World Journal of Gastroenterology2015,21,20:17
2Evaluation of the updated definition of early allograft dysfunction in donation after brain death and donation after cardiac death liver allografts显示文摘BACKGROUND:An updated definition of early allograft dysfunction(EAD) was recently validated in a multicenter study of 300 deceased donor liver transplant recipients.This analysis did not differentiate between donation after brain death(DBD) and donation after cardiac death(DCD) allograft recipients.METHODS:We reviewed our prospectively entered database for all DBD(n=377) and DCD(n=38) liver transplantations between January 1,2006 and October 30,2011.The incidence of EAD as well as its ability to predict graft failure and survival was compared between DBD and DCD groups.RESULTS:EAD was a valid predictor of both graft and patient survival at six months in DBD allograft recipients,but in DCD allograft recipients there was no significant difference in the rate of graft failure in those with EAD(11.5%) compared with those without EAD(16.7%)(P=0.664) or in the rate of death in recipients with EAD(3.8%) compared with those without EAD(8.3%)(P=0.565).The graft failure rate in the first 6 months in those with international normalized ratio ≥1.6 on day 7 who received a DCD allograft was 37.5% compared with 6.7% for those with international normalized ratio <1.6 on day 7(P=0.022).CONCLUSIONS:The recently validated definition of EAD is a valid predictor of patient and graft survival in recipients of DBD allografts.On initial assessment,it does not appear to be a useful predictor of patient and graft survival in recipients of DCD allografts,however a study with a larger sample size of DCD allografts is needed to confirm these findings.The high ALT/AST levels in most recipients of DCD livers as well as the predisposition to biliary complications and early cholestasis make these parameters as poor predictors of graft failure.An alternative definition of EAD that gives greater weight to the INR on day 7 may be more relevant in this population.Kris P Croome William Wall Douglas Quan Sai Vangala Vivian McAlister Paul Marotta Roberto Hernandez-Alejandro 2012Hepatobiliary & Pancreatic Diseases International2012,11,4:15
3Surgical vs percutaneous radiofrequency ablation for hepatocellular carcinoma in dangerous locations显示文摘AIM:To compare the long-term outcome of percutaneous vs surgical radiofrequency ablation(RFA) for hepatocellular carcinoma(HCC) in dangerous locations.METHODS:One hundred and sixty-two patients with HCC in dangerous locations treated with percutaneous or surgical RFA were enrolled in this study.The patients were divided into percutaneous RFA group and surgical RFA group.After the patients were regularly followed up for a long time,their curative rate,hospital stay time,postoperative complications and 5-year local tumor progression were compared and analyzed.RESULTS:No significant difference was observed in curative rate between the two groups(91.3% vs 96.8%,P = 0.841).The hospital stay time was longer and more analgesics were required while the incidence of bile duct injury and RFA-related hemorrhage was lower in surgical RFA group than in percutaneous RFA group(P < 0.05).The local progression rate of HCC in dangerous locations was significantly lower in surgical RFA group than in percutaneous RFA group(P = 0.05).The relative risk of local tumor progression was 14.315 in percutaneous RFA group.CONCLUSION:The incidence of severe postoperative complications and local tumor progression is lower after surgical RFA than after percutaneous RFA.Ji-Wei Huang Roberto Hernandez-Alejandro Kristopher P Croome Lu-Nan Yan Hong Wu Zhe-Yu Chen Pankaj Prasoon Yong Zeng 2011World Journal of Gastroenterology2011,17,1:14
4Management of nonalcoholic fatty liver disease:An evidence-based clinical practice review显示文摘AIM:To build a consensus among Chilean specialists on the appropriate management of patients with nonalcoholic fatty liver disease(NAFLD)in clinical practice.METHODS:NAFLD has now reached epidemic proportions worldwide.The optimal treatment for NAFLD has not been established due to a lack of evidence-based recommendations.An expert panel of members of the Chilean Gastroenterological Society and the Chilean Hepatology Association conducted a structured analysis of the current literature on NAFLD therapy.The quality of the evidence and the level of recommendations supporting each statement were assessed according to the recommendations of the United States Preventive Services Task Force.A modified three-round Delphi technique was used to reach a consensus among the experts.RESULTS:A group of thirteen experts was established.The survey included 17 open-ended questions that were distributed among the experts,who assessed the articles associated with each question.The levels of agreement achieved by the panel were 93.8%in the first round and 100%in the second and third rounds.The final recommendations support the indication of lifestyle changes,including diet and exercise,for all patients with NAFLD.Proven pharmacological therapies include only vitamin E and pioglitazone,which can be used in nondiabetic patients with biopsy-proven nonalcoholic steatohepatitis(the progressive form of NAFLD),although the long-term safety and efficacy of these therapies have not yet been established.CONCLUSION:Current NAFLD management is rapidly evolving,and new pathophysiology-based therapies are expected to be introduced in the near future.All NAFLD patients should be evaluated using a three-focused approach that considers the risks of liver disease,diabetes and cardiovascular events.Juan P Arab Roberto Candia Rodrigo Zapata Cristián Mu?oz Juan P Arancibia Jaime Poniachik Alejandro Soza Francisco Fuster Javier Brahm Edgar Sanhueza Jorge Contreras M Carolina Cuellar Marco Arrese Arnoldo Riquelme 2014World Journal of Gastroenterology2014,20,34:11
5心率作为冠心病与左室收缩障碍患者的预后危险因素(BEAUTIFUL):一项随机、对照试验的一个亚组分析显示文摘背景BEAUTIFUL研究对降心率药物伊伐布雷定的发病率与病死率收益进行了评估。BEAUTIFUL试验中的安慰剂组是由稳定型冠心病与左室收缩功能障碍的大型患者队列组成。我们对该安慰剂组进行了亚组分析,旨在检验这样一种假设,即基线静息心率升高是心血管疾病发病与死亡的标志。 方法采用Cox比例风险模型,对心率≥70次/min患者(2693例)以及〈70次/min患者(2745例)进行对比,分析基线静息心率与心血管结局之间的关系。将心率作为一个连续变量,并采用更为精细的心率分类进行其他分析。 结果在对基线特征进行校正后,心率≥70次/min患者的心血管疾病死亡(34%,P=0.0041)、心力衰竭入院(53%,P=0.0001)、心肌梗死入院(46%,P=0.0066)及冠状动脉血运重建(38%,P=0.037)风险升高。心率每升高5次/min,患者的心血管疾病死亡(8%,P=0.0005)、心力衰竭入院(16%.P〈0.0001)、心肌梗死入院(7%,P=0.052)及冠状动脉血运重建(8%,P=0.034)风险亦升高。对心率精细分组的分析表明,心率〉70次/min患者的病死率与心力衰竭发生率持续升高,但这种相关性在冠状动脉结局方面并不显著。对于心力衰竭结局而言,静息心率对早期事件的预测价值较晚期事件的预测价值更强。 结论在冠心病和左室收缩功能障碍的患者中,心率升高(≥70次/min)意味着心血管疾病结局风险升高,同时对心力衰竭相关性结局与冠状动脉事件相关性结局有着不同的影响。Kim Fox Ian Ford P Gabriel Steg Michal Tendera Michele Robertson Roberto Ferrari 罗亮(译) 2008世界临床医学2008,2,6:5
6A comparison of survival and pathologic features of non-alcoholic steatohepatitis and hepatitis C virus patients with hepatocellular carcinoma显示文摘AIM:To compare the clinical outcome and pathologic features of non-alcoholic steatohepatitis(NASH) patients with hepatocellular carcinoma(HCC) and hepatitic C virus(HCV) patients with HCC(another group in which HCC is commonly seen) undergoing liver transplantation.METHODS:Patients transplanted for HCV and NASH at our institution from January 2000 to April 2011 were analyzed.All explanted liver histology and pre-transplant liver biopsies were examined by two specialist liver histopathologists.Patient demographics,disease free survival,explant liver characteristics and HCC features(tumour number,cumulative tumour size,vascular invasion and differentiation) were compared between HCV and NASH liver transplant recipients.RESULTS:A total of 102 patients with NASH and 283 patients with HCV were transplanted.The incidence of HCC in NASH transplant recipients was 16.7%(17/102).The incidence of HCC in HCV transplant recipients was 22.6%(64/283).Patients with NASH-HCC were statistically older than HCV-HCC patients(P < 0.001).A significantly higher proportion of HCV-HCC patients had vascular invasion(23.4% vs 6.4%,P = 0.002) and poorly differentiated HCC(4.7% vs 0%,P < 0.001) compared to the NASH-HCC group.A trend of poorer recurrence free survival at 5 years was seen in HCV-HCC patients compared to NASH-HCC who underwent a Liver transplantation(P = 0.11).CONCLUSION:Patients transplanted for NASH-HCC appear to have less aggressive tumour features compared to those with HCV-HCC,which likely in part accounts for their improved recurrence free survival.Roberto Hernandez-Alejandro Kris P Croome Martin Drage Nathalie Sela Jeremy Parfitt Natasha Chandok Paul Marotta Cheryl Dale William Wall Douglas Quan 2012World Journal of Gastroenterology2012,18,31:5
7Intestinal pseudo-obstruction caused by herpes zoster:Case report and pathophysiology显示文摘Herpes zoster(HZ) infection occurs in approximately 10% to 30% of individuals. Visceral neuropathies secondary to HZ can cause cystitis and urinary retention. But colonic pseudo-obstruction can also occur. Peripheral neuropathy may reveal segmental motor paresis of either upper or lower limbs, the abdominal muscles or the diaphragm. We report the case of a 62-year-old male patient who presented with abdominal distention and cutaneous vesicular eruption on the left side of the abdominal wall. Plain X-rays and computed tomography scan showed distended small bowel. A diagnosis of intestinal pseudo-obstruction was made secondary to segmental paresis of the small intestine and visceral neuropathy. Conservative management was successful and the patient was discharged uneventfully. Intestinal pseudo-obstruction ought to be consideredwhen dealing with non-obstructive(adynamic) conditions of the digestive tract associated with HZ infection; since early recognition may help to avoid unnecessary surgery.Roberto Anaya-Prado José V Pérez-Navarro Ana Corona-Nakamura Michelle M Anaya-Fernández Roberto Anaya-Fernández Marian Eliza Izaguirre-Pérez 2018World Journal of Clinical Cases2018,6,6:4
8Model for end-stage liver disease-Na score or Maddrey discrimination function index, which score is best?显示文摘AIM: To compare the ability of model for end-stage liver disease(MELD)-Na and Maddrey discrimination function index(DFI) to predict mortality at 30 and 90 d in patients with alcoholic hepatitis(AH).METHODS: We prospectively assessed 52 patients with AH. Demographic, clinical and laboratory parameters were obtained. MELD-Na and Maddrey DFI were calculated on admission. Short-term mortality was assessed at 30 and 90 d. Receiver operating characteristic curve analysis was performed. RESULTS: Thirty-day and 90-d mortality was 44% and 58%, respectively. In the univariate analysis, sodium levels was associated with mortality at 30 and 90 d(P = 0.001 and P = 0.03). Child stage, encephalopathy, ascites, or types of treatment were not associated with mortality. MELD-Na was the only predictive factor for mortality at 90 d. For 30-d mortality area under the curve(AUC) was 0.763(95%CI: 0.63-0.89) for Maddrey DFI and 0.784 for MELD-Na(95%CI: 0.65-0.91, P = 0.82). For 90-d mortality AUC was 0.685(95%CI: 0.54-0.83) for Maddrey DFI and 0.8710 for MELD-Na(95%CI: 0.76-0.97, P = 0.041). CONCLUSION: AH is associated with high shortterm mortality. Our results show that MELD-Na is a more valuable model than DFI to predict short-term mortality.Mercedes Amieva-Balmori Scherezada María Isabel Mejia-Loza Roberto Ramos-González Felipe Zamarripa-Dorsey Eli García-Ruiz Nuria Pérez y López Eumir I Juárez-Valdés Adriana López-Luria José María Remes-Troche 2015World Journal of Hepatology2015,7,17:2
9Monocyte-derived Wnt5a regulates inflammatory ymphangiogenesis显示文摘Roberto Sessa Don Yuen Stephanie Wan Michael Rosner Preethi Padmanaban Shaokui Ge April Smith Russell Fletcher Ariane Baudhuin-Kessel Terry P Yamaguchi Richard A Lang LuChen 2016Cell Research2016,26,2:2
10Interchangeability of corneal curvature and asphericity measurements provided by three different devices显示文摘AIM: To evaluate the interchangeability of keratometric and asphericity measurements provided by three measurement systems based on different optical principles.METHODS: A total of 40 eyes of 40 patients with a mean age of 34.1 y were included. In all cases, a corneal curvature analysis was performed with IOL-Master(IOLM), iDesign 2(ID2), and Sirius systems(SIR). Differences between instruments for flattest(K1) and steepest(K2) keratometric readings, as well as for magnitude and axis of corneal astigmatism were analyzed. Likewise, differences in asphericity(Q) between SIR and ID2 were also evaluated. RESULTS: Mean differences between devices for K1 were 0.20±0.21(P<0.001),-0.12±0.36(P=0.046) and-0.32±0.36 D(P<0.001) for the comparisons IOLM-SIR, IOLM-ID2 and SIR-ID2, respectively. The ranges of agreement for these comparisons between instruments were 0.41, 0.70, and 0.70 D. For K2, mean differences were 0.31±0.33(P<0.001),-0.08±0.43(P=0.265) and-0.39±0.38 D(P<0.001), with ranges of agreement of 0.65, 0.84, and 0.74 D. Concerning magnitude of astigmatism, ranges of agreement were in the limit of clinical relevance(0.49 D, P=0.011; 0.55 D, P=0.386; 0.43 D, P=0.05). In contrast, ranges of agreement were clinically relevant for astigmatic axis(26.68o, 33.83o and 18.37o, P≥0.121) and for Q between SIR and ID2(0.16, P<0.001). CONCLUSION: The keratometric corneal power, astigmatic axis and asphericity measurements provideby the three systems evaluated cannot be considered as interchangeable, whereas measurements of corneal astigmatism obtained with SIR and ID2 can be considered as interchangeable for clinical purposes.David P.Pinero Roberto Soto-Negro Pedro Ruiz-Fortes Rafael J Pérez-Cambrodí Hideki Fukumitsu 2019International Journal of Ophthalmology(English edition)2019,12,3:2
11Determination of phenolic compounds in wines by novel matrix solid-phase dispersion extraction and gas chromatography-mass spectrometry 显示文摘LUCIO M ROBERTO P 2008Journal of Chromatography A2008,1185,:1
12Organic orchardfloor management systems for apple effect on rootstock perform- ance in the mid western United States 显示文摘Darios Roberto J Z Ronald L P Franco W 2009HortScience2009,44,2:1
13Oxidative photoelectrochemical technology with Ti/TiO2 anodes显示文摘Roberto P Michele R 2002Solar Energy Materials and Solar Cell2002,71,3:1
14Plant-microorganism-soil interactions influence the Fe availability in the rhizosphere of cucumber plants 显示文摘Youry P Alexander P Roberto T 2015Plant Physiology and Biochemistry2015,87,:1
15Conformational comparion in the snake toxin family显示文摘Roberto J F Clara P Mirtha J 1996Int J Peptide Protein Res1996,47,:1
16Efficacy of some biodegradable films as pre-harvest covering material for guava显示文摘Bilck A P Roberto S R Eiras Grossmann M V 2011Scientia Horticulturae2011,130,1:1
17Aerograviyy-assist maneuvers:coupled trajectory and vehicle shape optimization显示文摘Roberto Armellin Michele Lavagna Ryan P Starkey 2007Journal of Spacecraft and Rockets2007,50,168:1
18Application of purge and trap extraction and gas chromatography for determination of minor esters in cider显示文摘ROBERTO R M NOEM P G ANA G H 2005Journal of chromatography A2005,1069,2:1
19Effects of fertilization and tillage on soil biological parameters 显示文摘Iker M Roberto P Isabel A 2006Enzyme and Microbial Technology2006,40,:1
20ESD indirect coupling modeling显示文摘Graziano C Roberto D L Valter M P 1996IEEE Trans on EMC1996,38,3:1
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