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Charles vollmer

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https://www.readbyqxmd.com/read/28408176/using-the-nsqip-pancreatic-demonstration-project-to%C3%A2-derive-a-modified-fistula-risk-score-for-preoperative-risk-stratification-in-patients-undergoing-pancreaticoduodenectomy
#1
Olga Kantor, Mark S Talamonti, Henry A Pitt, Charles M Vollmer, Taylor S Riall, Bruce L Hall, Chi-Hsiung Wang, Marshall S Baker
BACKGROUND: The Fistula Risk Score (FRS) is a clinical tool developed from single-institutional data using primarily intraoperative factors to characterize the risk of clinically relevant pancreatic fistula (CR-POPF) after pancreaticoduodenectomy. We developed a modified FRS based on objective, nationally accrued data that is more readily determined before resection. STUDY DESIGN: The 2012 NSQIP Pancreatic Demonstration Project (PDP) was used to identify 1,731 pancreaticoduodenectomy resections over 14 months (2011 to 2012)...
May 2017: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/28317658/minimally-invasive-pancreatoduodenectomy
#2
Michael L Kendrick, Jony van Hilst, Ugo Boggi, Thijs de Rooij, R Matthew Walsh, Herbert J Zeh, Steven J Hughes, Yoshiharu Nakamura, Charles M Vollmer, David A Kooby, Horacio J Asbun
BACKGROUND: Minimally invasive pancreatoduodenectomy (MIPD) is increasingly performed with several institutional series and comparative studies reported. The aim was to conduct an assessment of the best-evidence and expert opinion on the current status and future challenges of MIPD. METHODS: A systematic review of the literature was performed and best-evidence presented at a State-of-the-Art conference on Minimally Invasive Pancreatic Resection. Expert panel discussion and audience response activity was used to assess perceived value and future direction...
March 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/28317657/standardizing-terminology-for-minimally-invasive-pancreatic-resection
#3
Andre L Montagnini, Bård I Røsok, Horacio J Asbun, Jeffrey Barkun, Marc G Besselink, Ugo Boggi, Kevin C P Conlon, Abe Fingerhut, Ho-Seong Han, Paul D Hansen, Melissa E Hogg, Michael L Kendrick, Chinnusamy Palanivelu, Shailesh V Shrikhande, Go Wakabayashi, Herbert Zeh, Charles M Vollmer, David A Kooby
BACKGROUND: There is a growing body of literature pertaining to minimally invasive pancreatic resection (MIPR). Heterogeneity in MIPR terminology, leads to confusion and inconsistency. The Organizing Committee of the State of the Art Conference on MIPR collaborated to standardize MIPR terminology. METHODS: After formal literature review for "minimally invasive pancreatic surgery" term, key terminology elements were identified. A questionnaire was created assessing the type of resection, the approach, completion, and conversion...
March 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/28306647/pasireotide-for-the-prevention-of-postoperative-pancreatic-fistula-time-to-curb-the-enthusiasm
#4
Laura Maggino, Charles M Vollmer
No abstract text is available yet for this article.
March 16, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28296660/reply-to-letter-risk-adjusted-outcomes-of-clinically-relevant-pancreatic-fistula-following-pancreatoduodenectomy-a-model-for-performance-evaluation
#5
Matthew T McMillan, Laura Maggino, Brett L Ecker, Charles M Vollmer
No abstract text is available yet for this article.
March 14, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28274661/research-considerations-in-the-evaluation-of-minimally-invasive-pancreatic-resection-mipr
#6
REVIEW
Jeffrey Barkun, William Fisher, Giana Davidson, Go Wakabayashi, Marc Besselink, Henry Pitt, Jane Holt, Steve Strasberg, Charles Vollmer, David Kooby
The IHPBA/AHPBA-sponsored 2016 minimally invasive pancreatic resection (MIPR) conference held on April 20th, 2016 included a session designed to evaluate what would be the most appropriate scientific contribution to help define the increasing role of MIPR internationally. Participants in the conference reviewed the assessment of numerous pertinent scientific designs including randomized controlled trial (RCT), pragmatic international RCT, registry-RCT, non-RCT with propensity matching, and various types of clinical registries including those aiming to create a quality improvement data system or a learning health care system...
March 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/28268161/minimally-invasive-pancreatic-resections-cost-and-value-perspectives
#7
Kevin C Conlon, Thijs de Rooij, Jony van Hilst, Mohammad Abu Hidal, Julie Fleshman, Mark Talamonti, Tsafrir Vanounou, Richard Garfinkle, Vic Velanovich, David Kooby, Charles M Vollmer
BACKGROUND: The number of minimally invasive pancreatic resections (MIPR) performed for benign or malignant disease, have increased in recent years. However, there is limited information regarding cost/value implications. METHODS: An international conference evaluating MIPR was held during the 12th Bi-Annual International Hepato-Pancreato-Biliary Association (IHPBA) World Congress in Sao Paulo, Brazil, on April 20th, 2016. This manuscript summarizes the presentations that reviewed current topics in cost and value as they pertain to MIPR...
March 4, 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/28263387/adjuvant-chemotherapy-versus-chemoradiotherapy-in-the-management-of-patients-with-surgically-resected-duodenal-adenocarcinoma-a-propensity-score-matched-analysis-of-a-nationwide-clinical-oncology-database
#8
Brett L Ecker, Matthew T McMillan, Jashodeep Datta, Major K Lee, Giorgos C Karakousis, Charles M Vollmer, Jeffrey A Drebin, Douglas L Fraker, Robert E Roses
BACKGROUND: To the authors' knowledge, optimal adjuvant approaches for resected duodenal adenocarcinoma are not well established. Given the significant risk of locoregional disease recurrence, there may be a subset of patients who demonstrate an improvement in overall survival (OS) from the addition of radiotherapy (chemoradiotherapy [CRT]) to an adjuvant chemotherapy regimen. METHODS: Patients with resected, nonmetastatic duodenal adenocarcinoma who received chemotherapy (694 patients) or CRT (550 patients) were identified in the National Cancer Data Base (1998-2012)...
May 15, 2017: Cancer
https://www.readbyqxmd.com/read/28215904/worldwide-survey-on-opinions-and-use-of-minimally-invasive-pancreatic-resection
#9
Jony van Hilst, Thijs de Rooij, Mohammed Abu Hilal, Horacio J Asbun, Jeffrey Barkun, Uggo Boggi, Olivier R Busch, Kevin C P Conlon, Marcel G Dijkgraaf, Ho-Seong Han, Paul D Hansen, Michael L Kendrick, Andre L Montagnini, Chinnusamy Palanivelu, Bård I Røsok, Shailesh V Shrikhande, Go Wakabayashi, Herbert J Zeh, Charles M Vollmer, David A Kooby, Marc G H Besselink
BACKGROUND: The introduction of minimally invasive pancreatic resection (MIPR) into surgical practice has been slow. The worldwide utilization of MIPR and attitude towards future perspectives of MIPR remains unknown. METHODS: An anonymous survey on MIPR was sent to the members of six international associations of Hepato-Pancreato-Biliary (HPB) surgery. RESULTS: The survey was completed by 435 surgeons from 50 countries, with each surgeon performing a median of 22 (IQR 12-40) pancreatic resections annually...
March 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/28215903/minimally-invasive-distal-pancreatectomy
#10
REVIEW
Bård I Røsok, Thijs de Rooij, Jony van Hilst, Markus K Diener, Peter J Allen, Charles M Vollmer, David A Kooby, Shailesh V Shrikhande
BACKGROUND: The first International conference on Minimally Invasive Pancreas Resection was arranged in conjunction with the annual meeting of the International Hepato-Pancreato-Biliary Association (IHPBA), in Sao Paulo, Brazil on April 19th 2016. The presented evidence and outcomes resulting from the session for minimally invasive distal pancreatectomy (MIDP) is summarized and addressed perioperative outcome, the outcome for cancer and patient selection for the procedure. METHODS: A literature search was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines to compare MIDP and open distal pancreatectomy...
March 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/28202218/pancreatic-fistula-risk-for-pancreatoduodenectomy-an-international-survey-of-surgeon-perception
#11
Matthew T McMillan, Giuseppe Malleo, Claudio Bassi, Michael H Sprys, Brett L Ecker, Jeffrey A Drebin, Charles M Vollmer
INTRODUCTION: Clinically relevant postoperative pancreatic fistula (CR-POPF) is a morbid complication following pancreatoduodenectomy (PD). It is unclear how pancreatic surgeons perceive risk for this complication, and the implications thereof. METHODS: A web-based survey was distributed to members of 22 international GI surgical societies. CR-POPF risk factors were categorized as follows: (i) patient factors, (ii) pancreatic gland characteristics, (iii) intraoperative variables, (iv) perioperative mitigation techniques, or (v) institutional features...
February 12, 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/28190709/training-in-minimally-invasive-pancreatic-resections-a-paradigm-shift-away-from-see-one-do-one-teach-one
#12
Melissa E Hogg, Marc G Besselink, Pierre-Alain Clavien, Abe Fingerhut, D Rohan Jeyarajah, David A Kooby, A James Moser, Henry A Pitt, Oliver A Varban, Charles M Vollmer, Herbert J Zeh, Paul Hansen
BACKGROUND: Increased incorporation of minimally invasive pancreatic resections (MIPR) has emerged into hepato-pancreato-biliary practice, however, no standardization exists for its safe adoption. Novel strategies are presented for dissemination of safe MIPR. METHODS: An international State-of-the-Art conference evaluating multiple aspects of MIPR was conducted by a panel of pancreas experts in Sao Paulo, Brazil on April 20, 2016. Training and education issues were discussed regarding the introduction of novel strategies for safe dissemination of MIPR...
March 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/28122075/intraductal-papillary-mucinous-neoplasm-around-the-world-are-we-seeing-things-the-same-way
#13
Laura Maggino, Charles M Vollmer
No abstract text is available yet for this article.
March 15, 2017: JAMA Surgery
https://www.readbyqxmd.com/read/28096374/phylogenetic-analysis-of-the-human-antibody-repertoire-reveals-quantitative-signatures-of-immune-senescence-and-aging
#14
Charles F A de Bourcy, Cesar J Lopez Angel, Christopher Vollmers, Cornelia L Dekker, Mark M Davis, Stephen R Quake
The elderly have reduced humoral immunity, as manifested by increased susceptibility to infections and impaired vaccine responses. To investigate the effects of aging on B-cell receptor (BCR) repertoire evolution during an immunological challenge, we used a phylogenetic distance metric to analyze Ig heavy-chain transcript sequences in both young and elderly individuals before and after influenza vaccination. We determined that BCR repertoires become increasingly specialized over a span of decades, but less plastic...
January 31, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28040257/the-2016-update-of-the-international-study-group-isgps-definition-and-grading-of-postoperative-pancreatic-fistula-11-years-after
#15
REVIEW
Claudio Bassi, Giovanni Marchegiani, Christos Dervenis, Micheal Sarr, Mohammad Abu Hilal, Mustapha Adham, Peter Allen, Roland Andersson, Horacio J Asbun, Marc G Besselink, Kevin Conlon, Marco Del Chiaro, Massimo Falconi, Laureano Fernandez-Cruz, Carlos Fernandez-Del Castillo, Abe Fingerhut, Helmut Friess, Dirk J Gouma, Thilo Hackert, Jakob Izbicki, Keith D Lillemoe, John P Neoptolemos, Attila Olah, Richard Schulick, Shailesh V Shrikhande, Tadahiro Takada, Kyoichi Takaori, William Traverso, Charles R Vollmer, Christopher L Wolfgang, Charles J Yeo, Roberto Salvia, Marcus Buchler
BACKGROUND: In 2005, the International Study Group of Pancreatic Fistula developed a definition and grading of postoperative pancreatic fistula that has been accepted universally. Eleven years later, because postoperative pancreatic fistula remains one of the most relevant and harmful complications of pancreatic operation, the International Study Group of Pancreatic Fistula classification has become the gold standard in defining postoperative pancreatic fistula in clinical practice. The aim of the present report is to verify the value of the International Study Group of Pancreatic Fistula definition and grading of postoperative pancreatic fistula and to update the International Study Group of Pancreatic Fistula classification in light of recent evidence that has emerged, as well as to address the lingering controversies about the original definition and grading of postoperative pancreatic fistula...
March 2017: Surgery
https://www.readbyqxmd.com/read/28030724/a-propensity-score-matched-analysis-of-robotic-vs-open-pancreatoduodenectomy-on-incidence-of-pancreatic-fistula
#16
Matthew T McMillan, Amer H Zureikat, Melissa E Hogg, Stacy J Kowalsky, Herbert J Zeh, Michael H Sprys, Charles M Vollmer
Importance: The adoption of robotic pancreatoduodenectomy (RPD) is gaining momentum; however, its impact on major outcomes, including pancreatic fistula, has yet to be adequately compared with open pancreatoduodenectomy (OPD). Objective: To demonstrate that use of RPD does not increase the incidence of clinically relevant pancreatic fistula (CR-POPF) compared with OPD. Design, Setting, and Participants: Data were accrued from 2846 patients who underwent pancreatoduodenectomies (OPDs, n = 2661; RPDs, n = 185), performed by 51 surgeons at 17 institutions worldwide (2003-2015)...
April 1, 2017: JAMA Surgery
https://www.readbyqxmd.com/read/28029534/the-influence-of-fellowship-training-on-the-practice-of-pancreatoduodenectomy
#17
Gregory T Kennedy, Matthew T McMillan, Michael H Sprys, Claudio Bassi, Paul D Greig, Paul D Hansen, Dhiresh R Jeyarajah, Tara S Kent, Giuseppe Malleo, Giovanni Marchegiani, Rebecca M Minter, Charles M Vollmer
BACKGROUND: There has been a proliferation of gastrointestinal surgical fellowships; however, little is known regarding their association with surgical volume and management approaches. METHODS: Surveys were distributed to members of GI surgical societies. Responses were evaluated to define relationships between fellowship training and surgical practice with pancreatoduodenectomy (PD). RESULTS: Surveys were completed by 889 surgeons, 84.1% of whom had completed fellowship training...
December 2016: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/28027816/pancreatic-anastomosis-after-pancreatoduodenectomy-a-position-statement-by-the-international-study-group-of-pancreatic-surgery-isgps
#18
REVIEW
Shailesh V Shrikhande, Masillamany Sivasanker, Charles M Vollmer, Helmut Friess, Marc G Besselink, Abe Fingerhut, Charles J Yeo, Carlos Fernandez-delCastillo, Christos Dervenis, Christoper Halloran, Dirk J Gouma, Dejan Radenkovic, Horacio J Asbun, John P Neoptolemos, Jakob R Izbicki, Keith D Lillemoe, Kevin C Conlon, Laureano Fernandez-Cruz, Marco Montorsi, Max Bockhorn, Mustapha Adham, Richard Charnley, Ross Carter, Thilo Hackert, Werner Hartwig, Yi Miao, Michael Sarr, Claudio Bassi, Markus W Büchler
BACKGROUND: Clinically relevant postoperative pancreatic fistula (grades B and C of the ISGPS definition) remains the most troublesome complication after pancreatoduodenectomy. The approach to management of the pancreatic remnant via some form of pancreatico-enteric anastomosis determines the incidence and severity of clinically relevant postoperative pancreatic fistula. Despite numerous trials comparing diverse pancreatico-enteric anastomosis techniques and other adjunctive strategies (pancreatic duct stenting, somatostatin analogues, etc), currently, there is no clear consensus regarding the ideal method of pancreatico-enteric anastomosis...
May 2017: Surgery
https://www.readbyqxmd.com/read/27884544/pancreas-fistula-risk-prediction-implications-for-hospital-costs-and-payments
#19
Daniel E Abbott, Ching Wei D Tzeng, Matthew T McMillan, Mark P Callery, Tara S Kent, John D Christein, Stephen W Behrman, Daniel P Schauer, Dennis J Hanseman, Mark H Eckman, Charles M Vollmer
BACKGROUND: As payment models evolve, disease-specific risk stratification may impact patient selection and financial outcomes. This study sought to determine whether a validated clinical risk score for post-operative pancreatic fistula (POPF) could predict hospital costs, payments, and profit margins. METHODS: A multi-institutional cohort of 1193 patients undergoing pancreaticoduodenectomy (PD) were matched to an independent hospital where cost, in US$, and payment data existed...
November 21, 2016: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/27865280/postpancreatectomy-complications-and-management
#20
REVIEW
Giuseppe Malleo, Charles M Vollmer
Although mortality rates after pancreatectomy have decreased, the incidence of postoperative morbidity remains high. The major procedure-related complications are pancreatic fistula, delayed gastric emptying, and postpancreatectomy hemorrhage. The International Study Group of Pancreatic Surgery defined leading complications in a standardized fashion, allowing unbiased comparison of operative results and management strategies. Risk factors for postoperative complications have been investigated and quantitative scoring systems established to estimate patient-specific risks...
December 2016: Surgical Clinics of North America
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