Publications by authors named "Ryan Lehmann"

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Concurrent hiatal hernia repair and gastric bypass as an adjunct in the treatment of hiatal hernia in populations with obesity.
Leon Siegel, Rory Carroll, Dakota T Thompson, Ryan Lehmann, Jessica Smith

Surg Endosc· August 2025

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Development and preliminary validation of a new task-based objective procedure-specific assessment of inguinal hernia repair procedural safety.
Vahagn C Nikolian, Diego Camacho, David Earle, Ryan Lehmann, Peter Nau

Surg Endosc· March 2024

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Using video-based assessment (VBA) to document fellow improvement in safely completing the jejunojejunostomy portion of laparoscopic Roux-en-Y gastric bypass (RYGB) surgery.
Peter Nau, Erin Worden, Ryan Lehmann, Kyle Kleppe, Gregory J Mancini

Surg Endosc· November 2023

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Global assessment of surgical skills (GASS): validation of a new instrument to measure global technical safety in surgical procedures.
Peter Nau, Erin Worden, Ryan Lehmann, Kyle Kleppe, Gregory J Mancini

Surg Endosc· October 2023

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Candy cane syndrome presenting with refractory heartburn 15 years after Roux-en-Y bypass.
Shahana Prakash, Ramses Saavedra, Ryan Lehmann, Mohamad Mokadem

J Surg Case Rep· March 2023

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The impact of COVID-19 on medium term weight loss and comorbidities in patients undergoing bariatric surgery and its association with psychological wellbeing.
Oscar Talledo, Rory Carroll, Erin Worden, Anna Marie Greenwood, Hart Alexander, Ryan Lehmann

Surg Endosc· February 2023

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Robotic surgery training during general surgery residency: a survey comparing attitudes towards a robotic training curriculum within general surgery, urology, and OBGYN residents and attendings.
Rory Carroll, Paolo Goffredo, Garett Steers, Ibrahim Cetindag, Ryan Lehmann

J Robot Surg· October 2022

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Optimizing Bariatric Surgery outcomes: the impact of preoperative elevated hemoglobin A1c levels on composite perioperative outcome measures.
Alexander Hart, Paolo Goffredo, Rory Carroll, Ryan Lehmann, Peter Nau

Surg Endosc· August 2021

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Recombinant factor VIIa is effective at reversing coagulopathy in a lactic acidosis model.
Richard N Lesperance, Ryan K Lehmann, Dawn M Harold, Alec C Beekley, James A Sebesta

J Trauma Acute Care Surg· January 2012

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Does sacrifice of the inferior mesenteric artery or superior rectal artery affect anastomotic leak following sigmoidectomy for diverticulitis? a retrospective review.
Ryan K Lehmann, Lionel R Brounts, Eric K Johnson, Julie A Rizzo, Scott R Steele

Am J Surg· May 2011

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Hypoxemic versus normoxemic reperfusion in a large animal model of severe ischemia-reperfusion injury.
Ryan K Lehmann, Lionel R Brounts, Kelly E Lesperance, Matthew J Eckert, Richard N Lesperance

J Surg Res· April 2011

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Resectional gastric bypass outcomes in active duty soldiers: a retrospective review.
Lionel R Brounts, Kelly Lesperance, Ryan Lehmann, Preston Carter, Alec Beekley

Surg Obes Relat Dis· March 2010

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Issues in revascularization of the ischemic foot and ankle war injury.
Ryan K Lehmann, Reagan Quan, Niten Singh

Foot Ankle Clin· March 2010

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A simplified set of trauma triage criteria to safely reduce overtriage: a prospective study.
Ryan Lehmann, Lionel Brounts, Kelly Lesperance, Matthew Eckert, Linda Casey

Arch Surg· September 2009

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National trends and outcomes for the surgical therapy of ileocolonic Crohn's disease: a population-based analysis of laparoscopic vs. open approaches.
Kelly Lesperance, Matthew J Martin, Ryan Lehmann, Lionel Brounts, Scott R Steele

J Gastrointest Surg· July 2009

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Improved rates of colorectal cancer screening in an equal access population.
Lionel R Brounts, Ryan K Lehmann, Kelly E Lesperance, Tommy A Brown, Scott R Steele

Am J Surg· May 2009

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The impact of advanced age on trauma triage decisions and outcomes: a statewide analysis.
Ryan Lehmann, Alec Beekley, Linda Casey, Ali Salim, Matthew Martin

Am J Surg· May 2009

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Natural course and outcome of cystic lesions in the pancreas.
Lionel R Brounts, Ryan K Lehmann, Marlin W Causey, James A Sebesta, Tommy A Brown

Am J Surg· May 2009

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Interhospital patient transport by rotary wing aircraft in a combat environment: risks, adverse events, and process improvement.
Ryan Lehmann, John Oh, Sherry Killius, Mark Cornell, Elizabeth Furay

J Trauma· April 2009

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Trauma team activation: simplified criteria safely reduces overtriage.
Ryan K Lehmann, Zachary M Arthurs, Daniel G Cuadrado, Linda E Casey, Alec C Beekley

Am J Surg· May 2007

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