Publications by authors named "Edward Purich"

Background: Objectives: We performed a randomized, double-blind, placebo-controlled trial to determine if using Secretin intra-operatively to identify leaks and subsequently target operative intervention would decrease the frequency of clinically significant post-operative pancreatic fistula formation.

Methods: Patients undergoing pancreaticoduodenectomy or distal pancreatectomy were randomized to receive intra-operative Secretin or placebo intra-operatively following the completed pancreaticojejunostomy or closure of the cut remnant stump. If a potential leak was identified, targeted therapy with directed suture placement was performed.

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Objective: We aimed to determine if intravenous synthetic human secretin (sHS) improves refractory type B pain in patients with chronic pancreatitis (CP).

Methods: In a phase II dose escalation trial, patients with CP received sHS of varying doses (0.05-0.

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Objectives: Endoscopic ultrasound (EUS) evaluation of pancreatic duct compliance after secretin stimulation (sEUS) along with EUS morphologic examination (EUS) and duodenal fluid [HCO3] measurement (endoscopic pancreatic function test, ePFT) in 1 endoscopic session has not been reported as a means of evaluating for chronic pancreatitis (CP). We evaluated the feasibility of the combined examination and compared EUS measurements of pancreatic ductal compliance with duodenal fluid [HCO3] for diagnosing CP.

Methods: The study is a prospective case series of patients with suspected CP who underwent a combined EUS, sEUS, and ePFT examination in 1 endoscopic session.

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Objectives: This study aimed to evaluate whether synthetic secretin is effective in reducing post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis.

Methods: This is a single academic medical center, prospective, randomized, double-blind, placebo-controlled trial using secretin (dose of 16 μg) administered intravenously immediately before ERCP. Patients were evaluated for the primary outcome of post-ERCP pancreatitis as diagnosed by a single investigator.

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Background & Aims: Endoscopic ultrasound (EUS) detects mild and severe structural abnormalities of the pancreas that correlate with fibrosis. Direct pancreatic function tests (PFTs) detect mild exocrine insufficiency associated with early fibrosis. The primary aim of this study was to compare EUS structural criteria with duct-cell and acinar-cell function.

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Background: Direct pancreatic function tests (PFT) are conventionally performed with use of double-lumen "Dreiling" collection tubes. We have developed an endoscopic collection method (ePFT) that eases the performance of these tests.

Objective: Our aim was to compare the bicarbonate results obtained from the secretin ePFT and Dreiling PFT methods in patients evaluated for chronic pancreatitis.

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Endosonography (EUS) has emerged as a major diagnostic tool in pancreatic imaging. Direct tests of pancreatic function are considered the most sensitive and accurate method to establish a diagnosis of chronic pancreatitis (CP), particularly when imaging studies are inconclusive. The aim of this study was to compare current EUS CP criteria with our newly described, purely endoscopic, secretin-stimulated pancreatic function test (ePFT).

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Objectives: We have developed an endoscopic method of secretin endoscopic pancreatic function testing (ePFT) to simplify duodenal fluid collection. Validation of the ePFT requires a direct comparison to the traditional PFT using a Dreiling tube (DT). Our aim was to compare bicarbonate concentrations [HCO3-] obtained by the ePFT and DT methods in healthy subjects (HS).

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Background: We have developed a purely endoscopic collection method for the assessment of pancreatic secretory function (ePFT). The pancreatic secretory effects of sedation medications utilized during endoscopic procedures are not completely known.

Aims: To study the effect of moderate sedation on the exocrine pancreas gland in a prospective, randomized trial.

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The purity profile for porcine secretin attributable to contamination by equilibrium products such as aspartoyl(3) secretin has been shown to be dependent on the pH of the analytical system. Capillary zone electrophoresis (CZE) methods have been developed for the efficient separation of synthetic porcine secretin, its equilibrium products and other impurities in aqueous solutions at both acidic and alkaline pH. These conditions are more representative of those used for the reconstitution and administration of porcine secretin, and good results cannot be achieved using HPLC due to poor peak shape above pH 5.

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Background: Traditional pancreatic function tests are sensitive for the diagnosis of pancreatic exocrine insufficiency but are cumbersome and difficult to perform. A sedationless endoscopic pancreatic function test that has the potential for wide clinical application was developed by us, but data on the results of this method in healthy subjects are lacking. This study analyzed endoscopically collected duodenal fluid from healthy subjects after synthetic porcine secretin stimulation.

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Background: Secretin, a 27 amino acid polypeptide released in response to duodenal luminal acidification, stimulates secretion of water and bicarbonate from pancreatic ductal cells. To date the only secretin available for clinical use has been a biologically derived compound extracted from porcine duodenums. Although used to facilitate pancreatic duct cannulation, secretin has not been approved for this indication.

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