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Surgery Styles -- directory

Research Opportunities

In addition to the five years of clinical general surgery training, categorical residents are expected to spend two to three years as a resident in research/academics. Most spend two years in research or academics. Opportunities for clinical as well as basic-science research abound. Several of our residents have completed master's degrees during the two research years. Occasionally residents spend three years in order to satisfy the requirements for a Ph.D.

Residents are also encouraged to participate in various clinical research projects in collaboration with the faculty. Diverse research opportunities are available to individuals seeking careers in academic surgery. Most surgical residents spend a two-year research fellowship working with established surgical faculty investigators. Those entering the program with a Ph.D. are given the opportunity to set up an individualized curriculum. Residents pursue research spanning the full range of investigation from basic science to translational investigations, and clinical and outcomes-based research.

Research Images

Sample Projects by 2023-24 Research Residents


Jack Zakrzewski

Jack Zakrzewski

I work with Dr. Matthew Stone, one of the congenital cardiac surgeons at Children’s Hospital Colorado (CHCO), in his basic science lab. Our research aims to reduce the effects of ischemia-reperfusion injury (IRI) on donor hearts, focusing on the impacts of ex vivo perfusion on graft function. We have developed a novel murine heart transplant model and associated ex vivo perfusion circuit that allows for functional analysis of the graft post-transplant. Specifically, I am investigating the role of the sphingosine-STAT3 pathway in IRI mitigation. My research is partially funded by the Stimulating Access to Research in Residency (StARR) R38 Award.

I also work with Dr. Jesse Davidson, one of the pediatric cardiologists at CHCO. He investigates the metabolic and physiologic effects of cardiac bypass and extracorporeal membrane oxygenation (ECMO) using a porcine model. We use techniques such as mass spectroscopy to study the effects of extracorporeal circulation on patient metabolomics.

Christina Stuart

Christina Stuart

I work with Dr. Robert Meguid and the Division of Cardiothoracic Surgery focusing mainly on thoracic outcomes with specific attention to lung and esophageal cancer. Most of my thoracic outcomes research is supported by an NIH T32 aimed at continuing to improve the surgical management of lung cancer patients thorough our Thoracic Enhanced Recovery After Surgery (ERAS) Protocol, however, I also focus on the implications of various social determinants of health, including the Social Vulnerability Index, and how this effects our lung and esophageal cancer patients.

Outside of thoracic outcomes, Dr. Meguid and I collaborate with a large team of analysts and machine learning specialists, both here and at Vanderbilt University, to develop deep learning techniques for automated surveillance of postoperative complications as well as preoperative surgical risk prediction tools. We’ve been able to apply this methodology to new ideas such as using artificial intelligence to optimize the extraction and incorporation of unstructured health data from the local electronic health record (EHR) to the National Cancer Database. This work has been generously funded by the Cancer League of Colorado. By piloting this implementation at our institution and validating it by comparing outcomes with prior NCDB studies, we intend to develop an enriched cancer database, operational by multiple institutions, to facilitate the use of real-world and unstructured health data for clinical advancements in oncology.



Sample Projects by 2021-22 Research Residents


Syed Shahyan Bakhtiyar

Syed Shahyan Bakhtiyar

I work with Dr. Peyman Benharash in the Cardiac Outcomes Research Laboratory (CORELAB) at the Division of Cardiac Surgery at UCLA. We are involved in a variety of projects ranging from surgical outcomes and resource utilization to biomedical engineering. I am specifically focused on analyzing adult heart transplantation outcomes in patient with congenital heart disease, increasing the donor organ pool, and using CAD simulations to evaluate the effectiveness of certain surgical techniques.

Michael Kirsch

Michael Kirsch

I work with Dr. Marco Del Chiaro on cystic disease of the pancreas and its progression to cancer. I work closely with his team of international fellows. We perform clinical research while also working to develop consensus guidelines on the management of cystic disease of the pancreas.

I also work with Dr. Camille Stewart on the impact of cannabis use in liver cancer and melanoma patient outcomes. Cannabis has been legal recreationally in Colorado for almost a decade, but its influence on surgical outcomes is poorly understood.

Finally, I work with Dr. Yihan Lin on global surgical education. We have developed a low-cost surgical simulator that has been used in our own residency program, as well as in Kenya and Rwanda. We are designing a curriculum for essential surgical skills to be integrated in the orientation of new Rwandan interns to better standardize their learning.

Samuel Lai

Samuel Lai

I work with Dr. Chapman and Dr. Vogel on clinical research projects in the field of colorectal surgery. Most recently, we have started a national multicenter rectal surgery research collaborative with 40+ other centers around the United States. One of the initial projects is focused on practice patterns and outcomes in non-operative management of locally advanced rectal cancer in the United States. We are also conducting a randomized trial comparing 2 different TAP block formulations in postoperative pain control at UC Health, as well as participating in a national multicenter randomized trial on operative vs nonoperative management of left sided diverticulitis. Finally, we are working on a few other retrospective outcomes-based studies in colorectal patients as well.

Alyssa Vaughn

Alyssa Vaughn

I work with Dr. Ken Liechty supported by the Laboratory for Fetal and Regenerative Biology. Our lab in conjunction with a group of collaborators developed a novel therapeutic consisting of a nanoparticle conjugated to a microRNA that we are now testing in different injury models including a lung injury model (ARDS), diabetic wound healing model, pressure ulcer injury model, and a colitis model. I am also working on various clinical outcomes projects in multiple areas including congenital diaphragmatic hernia, myelomeningocele, surgical necrotizing enterocolitis, and duodenal atresia.



Sample Projects by 2021-22 Research Residents


Dor Yoeli

Dor Yoeli

I work with Dr. Chris Huang on various projects focused on transplant immunology and tolerance. We are testing novel therapeutic approaches to inducing tolerance and treating acute rejection in a pig kidney transplant model. We are also investigating novel treatments to mitigate ischemia-reperfusion injury in vascularized composite allograft transplantation in rodent models. We also have various projects focused on the role of galectin-3 in liver disease, transplantation, and coagulation, and are collaborating with Dr. Cara Mack to study galectin-3 in biliary atresia. I am also working with Dr. Megan Adams to conduct outcomes and mixed methods research in pediatric liver and kidney transplantation.

Helen Madsen

Helen Madsen

I work with Dr. Meguid on a multi-disciplinary team on health outcomes research. We are working on many large population level analyses using the NSQIP database. I have focused on the assessment of a patient's surgical risk in various ways, such as the impact of certain factors on mortality or the impact of obesity on surgical risk. We meet once a week with our team to discuss projects. We work closely with biostatisticians who perform our statistical analyses.

I work with Dr. Stewart on a prospective trial evaluating pain medication use in cannabis users. We will be enrolling patients in the trial in order to collect blood samples and quantify levels of cannabinoids, we will be comparing non-cannabis users and cannabis users to assess surgical outcomes as well as pain medication usage.

Current/Recent Residents by Lab

LabSpecialtyCurrent Resident / Lab Alumni
Dr. Abman Pediatrics Christina Kim
Bradley Wallace
Dr. Chapman/Dr. Vogel Colorectal Samuel Lai
Dr. Christian Surgical Education Keval Tilva
Dr. Cohen Trauma Lauren Gallagher
Benjamin Ramser
Benjamin Stocker
Terry “TJ” Schaid
Jamie Hadley
William “Morgan” Hallas
Otto Thielen
Dr. Cumbler Surgical Quality

Andrii Khomiak
Viviane Leite-Abud
(& Exec. Leadership UCH)
Dr. Del Chiaro Surgical Oncology Michael Kirsch
Dr. Derderian Pedi Surg Lauren Gallagher
Dr. Fullerton CT Surgery Michael Jarrett
Dr. Ghosain Pediatric Surgery Bailey Lyttle
Dr. Gleisner Surgical Oncology Madeline “Maddy Thomas
Laura Leonard
Dr. Iorio Plastics Alexandra Kovar
Dr. Eddie Jones VA Quality Improvement Danielle Abbitt
Dr. Teresa Jones VA Quality Improvement Laura Leonard
Joshua Billings
Danielle Abbitt
Dr. Kovacs Burn, Alcohol Research Kevin Choy
John Frankel
Dr. Liechty Pediatric Surgery Bailey Lyttle
Alyssa Vaughn
Amanda Louiselle
Lindel Dewberry
Sarah Hilton
Maggie Hodges
Dr. Meguid CT Surgery Christina Stuart
Adam Dyas
Abhinav Singh

Dr. E. Moore Trauma Margot DeBot
Navin Vigneshwar
Matthew Bartley
Julia Coleman
Geoffrey Nunns
Jason Samuels
Gregory Stettler
Peter Einersen
Anthony Bacon
Hunter Moore
Dr. H. Moore Transplant Micaella Zubkov
Dr. Nehler Vascular/CPC​ Robert “Wilson” King
Ryan Gupta
Nicholas Govsyeyev
Dr. Nydam Transplant Dor Yoeli
Rashikh Choudhury
Dr. Raeburn/Dr. Pozdeyev Endocrine Martin Barrio
Dr. Reece CT Surgery Adam Carroll
Cenea Kemp
Christian Ghincea
Mohamed Eldeiry

Dr. Robinson Surgical QI, Outcomes Alexandra Kovar
Heather Carmichael
Dr. Jessica Rove CT outcomes Jake Cotton
Alejandro “Alex” Suarez-Pierre
Dr. Schroeppel Trauma Emily Johnson
Janet Lee
Joshua Billings
Eliza Moskowitz
Dr. Schulick/Dr. Yuwen Zhu Surgical Oncology Felix Ho
Robert Torphy
Ellott Yee
Dr. Stone/Dr. Moghari Pediatric Cardiac Surgery Jack Zakrzewski
Nicolas Drysdale
John Iguidbashian
Dr. Tevis Breast/QI​ Madeline Huey
Sudheer Vemuru
Laura Leonard
Victoria “Tori” Huynh
Dr. Wright QI Alexandra Kovar
Dr. Velopulos Outcomes, Healthcare Disparities Charlotte Heron
Danielle Abbitt
Madeline “Maddy” Thomas
Heather Carmichael
Denise Garofalo
Dr. Weyant Thoracic Surgery Helen Madsen
Keval Tilva
Anna Gergen
Allana White
Alison Halpern
Patrick Kohtz
Kweku Hazel

Principal Investigators and Faculty Mentors, Research Laboratories:


Mitchell Cohen (Mitchell.Cohen@cuanschutz.org)

Katie Colborn (Kathryn.Colborn@cuanschutz.edu)

Ethan Cumbler (Ethan.Cumbler@cuanschutz.edu)

Marco del Chiaro (Marco.delChiaro@cuanschutz.edu)

David Fullerton (David.Fullerton@cuanschutz.edu)

Ana Gleisner (Ana.Gleisner@cuanschutz.edu)

Ankush Gosain (Ankush.Gosain@childrenscolorado.org)

Christene Huang (Christene.Huang@cuanschutz.edu)

Juan-Pablo Idrovo (Juan.Idrovo@cuanschutz.edu)

Matthew Iorio (Matthew.Iorio@cuanschutz.edu)

Donald Jacobs (Donald.L.Jacobs@cuanschutz.edu)

Edward Jones (Edward.Jones@cuanschutz.edu)

Teresa Jones (Teresa.Jones@cuanschutz.edu)

Elizabeth Kovacs (Elizabeth.Kovacs@cuanschutz.edu)

Lacey LaGrone (Lacey.LaGrone@UCHealth.org)

David Mathes (David.Mathes@cuanschutz.edu)

Martin McCarter (Martin.McCarter@cuanschutz.edu)

Robert Meguid (Robert.Meguid@cuanschutz.edu)

Ernest “Gene” Moore (Ernest.Moore@dhha.org)

Hunter Moore (Hunter.Moore@CUAnschutz.edu)

Steven Moulton (Steven.Moulton@childrenscolorado.org)

Mark Nehler (Mark.Nehler@cuanschutz.edu)

Trevor Nydam (Trevor.Nydam@cuanschutz.edu)

James Pomposelli (James.Pomposelli@cuanschutz.edu)

Christopher Raeburn (Christopher.Raeburn@cuanschutz.edu)

Brett Reece (Brett.Reece@cuanschutz.edu)

Thomas Robinson (Thomas.Robinson@cuanschutz.edu)

Jessica Rove (Jessica.Rove@CUAnschutz.edu)

Thomas Schroeppel (Thomas.Schroeppel@uchealth.org)

Richard Schulick (Richard.Schulick@cuanschutz.edu)

Matthew Stone (Matthew.Stone@childrenscolorado.org )

Sarah Tevis (Sarah.Tevis@cuanschutz.edu)

Catherine Velopulos (Catherine.Velopulos@cuanschutz.edu)

Jon Vogel (Jon.Vogel@cuanschutz.edu)

Kia Washington (Kia.Washington@cuanschutz.edu)

Arek Wiktor (Arek.Wiktor@cuanschutz.edu)

Franklin Wright (Franklin.Wright@cuanschutz.edu)

Yuwen Zhu (Yuwen.Zhu@cuanschutz.edu)


Elizabeth Kovacs, PhDDr. Elizabeth Kovacs serves as Vice Chair of Research for the Department of Surgery.


Mitchell Jay Cohen, MD

Dr. Mitchell Cohen is Associate Vice Chair of Basic and Translational Research, Department of Surgery.

Local Educational Options During Research Years



Master of Public Health (MPH)
Colorado School of Public Health

Two- to three-year specialized public health graduate degree program including capstone project and studies within statistics, epidemiology, environmental health, policy, and behavioral sciences. Website

Contact: Admissions@CSPH@ucdenver.edu or 303-724-4613

CU Residents who have completed this program:

  • Terri Chin
  • Navin Vigneshwar, MPH in applied biostatistics



Clinical Science Masters Degree (MSCS) and PhD
University of Colorado Denver

One- to three-year translational research graduate degree program including thesis and studies within statistics, clinical epidemiology, and health outcomes. Website

Contact: Lisa Cicutto (program director) / Galtin Mankin (program coordinator)

CU Residents who have completed the MSCS program:

  • Daine Bennett
  • Lisa Foley
  • Nicole Christian
  • Jeniann Yi
  • Dor Yoeli
  • Lindel Dewberry
  • Robert “Wilson” King (MSCS expected, 2023)

CU Residents who have completed the PhD program:

  • Hunter Moore
  • Robert Torphy
  • Kiran Dyamenahalli (completed prior to Surgery residency at CU)

CLSC flyer (PDF)

The University of Colorado has an ECMO fellowship, which is a non-ACGME accredited 2-year clinical and research fellowship encompassing all aspects of end-stage heart/ lung failure and mechanical circulatory support. The ideal candidate would be finishing PGY-2 or PGY-3 year of general surgery and looking for a 2-year research opportunity. The candidate will have a strong clinical background and an understanding of applied biostatistics and database management. They should also have a strong desire to matriculate into a cardiothoracic surgery fellowship with an emphasis on cardiopulmonary failure and transplantation.

For more information, please contact Jennifer Yang, Jennifer.Yang@cuanschutz.edu.

Surgery

CU Anschutz

Academic Office One

12631 East 17th Avenue

Room: 6111

Aurora, CO 80045


303-724-2750

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