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Advanced GI MIS/Bariatric Fellowship Program

Gundersen Health System General Surgery offers a fully funded one-year post residency fellowship in minimally invasive bariatric surgery and advanced laparoscopy. This fellowship is accredited by the Fellowship Council.

The fellowship provides extensive experience in the surgical management of morbid obesity with emphasis on laparoscopic Roux-en-Y gastric bypass, and laparoscopic sleeve gastrectomy. The fellow is exposed to a multitude of other advanced laparoscopic procedures, such as laparoscopic antireflux surgery, laparoscopic colectomy, solid organ surgery, hernia surgery, thoracoscopy and also the da Vinci S Surgical System.

The fellow is involved in the comprehensive preoperative assessment of all new bariatric patients, scrub on all bariatric procedures and involved in the postoperative management and follow-up of these patients. The fellow participates in resident education and teaches skill acquisition to general surgery residents in the training lab. The fellow also participates in research activities during the course of the year.

The Minimally Invasive Bariatric Surgery program provides a comprehensive multi-disciplinary approach to the bariatric patient. The team includes a physician assistant, registered dietitians, a program manager, a clinical coordinator, as well as psychologists and plastic surgeons.

Upon completion of the fellowship, the fellow will be well prepared to establish a proper minimally invasive bariatric surgery program in an academic or private practice environment.

Benefits information

Fellowship research

2018-2019

Mishra, Tripurari

Publications:

  1. Mishra T, Shapiro JB, Ramirez LD, Kallies KJ, Kothari SN, Londergan TA. Nephrolithiasis after Bariatric Surgery: A Comparison of Roux-en-Y Gastric Bypass and Sleeve Gastrectomy.  Am J Surg. 2019; under review.
  2. Mishra T, Kothari SN. Therapeutic Management of GERD: LINX®. Curr Probl Surg. 2019; in press.
  3. Mishra T, Kothari SN.  Pregnancy Issues and Bariatric Surgery. In: The ASMBS Textbook of Bariatric Surgery, 2nd Edition (Nguyen NT, Rosenthal RJ, Ponce J, Morton JM, Brethauer S, Eds.) Springer, New York, NY; 2019.

Presentations:

  1. Mishra T. Gout and recurrent nephrolithiasis: dietary and medical management, choice of surgery.
    • ASMBS ObesityWeek 2018, November 12, 2018; Nashville, TN. (Invited lecture)
  2. Mishra T, Trombetta LJ, Kallies KJ, Kothari SN. Non-Alcoholic Steatohepatitis - The Hidden Comorbidity: No Referral for Bariatric Surgery.
    • ASMBS ObesityWeek 2018, November 15, 2018; Nashville, TN.
  3. Mishra T, Marchiando LK, Borgert AJ, Kallies KJ, Kothari SN. Preoperative Weight Loss Medication Use and Postoperative Outcomes.
    • ASMBS ObesityWeek 2018, November 15, 2018; Nashville, TN. (E-Poster)
  4. Mishra T, Caddell E, Palubicki J, Brockmeyer J, Borgert AJ, Kallies KJ, Faler B, Choi Y, Kothari SN. Impact of Ursodeoxycholic Acid on Biliary Complications after Bariatric Surgery.
    • Wisconsin Surgical Society Annual Meeting, November 2, 2018; Kohler, WI.
  5. Mishra T, Shapiro JB, Ramirez LD, Kallies KJ, Kothari SN, Londergan TA. Nephrolithiasis after Bariatric Surgery: A Comparison of Roux-en-Y Gastric Bypass and Sleeve Gastrectomy.
    • Wisconsin Surgical Society Annual Meeting, November 2, 2018; Kohler, WI.
    • Gundersen Academic Day, May 21, 2019; La Crosse, WI.

Videos:

  1. Mishra T, Kothari SN. Laparoscopic Resection of Esophageal Leiomyoma.
    • SAGES Annual Meeting, April 3-6,2019; Baltimore, MD.
  2. Mishra T, Kothari SN. Laparoscopic Resection of Jejunal Diverticula.
    • SAGES Annual Meeting, April 3-6,2019; Baltimore, MD.
  3. Mishra T, Grover BT. Pitfall for Sleeve Gastrectomy in Complex Hernia Patient.
    • ASMBS Weekend, June 22, 2019; Chicago, IL.

2017-2018

Morell, Michael C.

Publications:

  1. Grover BT, Morell MC, Kothari SN, Borgert AJ, Kallies KJ, Baker MT. Defining Weight Loss after Bariatric Surgery: A Call for Standardization. Obes Surg. 2019; in press.
  2. Morell MC, Kothari SN. The Expert Witness and Tort Reform. In: Quality in Obesity Treatment (Morton JM, Brethauer S, Hutter M, DeMaria E, Kahan S, Eds.). Springer, New York, NY; 2019.

Presentations:

  1. Morell MC, Kothari SN, Borgert AJ, Kallies KJ, Baker MT, Grover BT. Weight Recidivism after Bariatric Surgery.
    • ASMBS ObesityWeek 2017, November 2017; Washington D.C.
      *John Halverson Young Investigator Award*
  2. Gundersen Academic Day, May 22, 2018; La Crosse, WI.
  3. Morell MC, Kallies KJ, Grover BT, Kothari SN. Roux-en-Y Gastric Bypass versus Sleeve Gastrectomy: What Factors Influence Patient Preference?
    • ASMBS ObesityWeek 2017, November 2017; Washington D.C. (Poster)
    • Wisconsin Surgical Society Annual Meeting, November 4, 2017; Kohler, WI.
    • Southwestern Surgical Congress, April 8, 2017; Napa, CA. (E-Poster).
  4. Morell MC, Borgert AJ, Henson SE, Kallies KJ, Kothari SN. The Role of Fellowship Training in Bariatric Surgery: An Analysis of MBSAQIP Data.
    • Wisconsin Surgical Society Annual Meeting, November 4, 2017; Kohler, WI.
    • Southwestern Surgical Congress, April 10, 2017; Napa, CA. (E-Poster).
    • Gundersen Academic Day, May 22, 2018; La Crosse, WI. (Poster).
  5. Morell MC, Borgert AJ, Kallies KJ, Kowalski TJ, Kothari SN. Timing of Preoperative Antibiotic Prophylaxis and Postoperative Surgical Site Infections.
    • Southwestern Surgical Congress, April 10, 2017; Napa, CA.
  6. Morell MC, Shapiro JB, Ramirez LD, Kallies KJ, Kothari SN, Londergan TA. Nephrolithiasis after Bariatric Surgery: A Comparison of Roux-en-Y Gastric Bypass and Sleeve Gastrectomy.
    • ASMBS Weekend, June 15, 2018; New York, NY.

Videos:    

  1. Morell MC, Grover BT. Intraoperative Complications of Laparoscopic Sleeve Gastrectomy.
    • SAGES & CAGS 16th World Congress of Endoscopic Surgery, April 12, 2018; Seattle, WA.
  2. Morell MC, Kothari SN, Grover BT, Baker MT. Jejunojejunostomy Stricture after Roux-en-Y Gastric Bypass.
    • ASMBS Weekend, June 15, 2018; New York, NY.
  3. Morell MC, Kothari SN. Recurrent Epiphrenic Diverticulum.
    • SAGES Annual Meeting, April 3-6,2019; Baltimore, MD.

2016-2017

Nearing, Emanuel E.

Publications:

  1. Nearing EE, Santos TM, Topolski MS, Borgert AJ, Kallies KJ, Kothari SN. The Benefits of Bariatric Surgery Prior to Elective Total Joint Arthroplasty: Is There a Role for Weight Loss Optimization?  Surg Obes Relat Dis. 2017 Mar;13(3):457-462.
  2. Nearing EE, Santos TM, Topolski MS, Borgert AJ, Kallies KJ, Kothari SN. Outcomes of Total Hip or Knee Arthroplasty in Patients after Bariatric Surgery versus Patients With and Without Obesity.  Am Surg. 2019; Under review.

Presentations:

  1. Nearing EE, Santos TM, Topolski MS, Borgert AJ, Kallies KJ, Kothari SN. Outcomes of Total Hip or Knee Arthroplasty in Patients after Bariatric Surgery versus Patients With and Without Obesity.
    • ASMBS 33rd Annual Meeting- ObesityWeek 2016, November 2016; New Orleans, LA.
  2. Nearing EE, Santos TM, Topolski MS, Borgert AJ, Kallies KJ, Kothari SN. The Benefits of Bariatric Surgery Prior to Elective Total Joint Arthroplasty: Is There a Role for Weight Loss Optimization?
    • ASMBS 33rd Annual Meeting- ObesityWeek 2016, November 4, 2016; New Orleans, LA.
    • Wisconsin Surgical Society Annual Meeting, November 5, 2016; Kohler, WI.
  3. Nearing EE, Borgert AJ, Kallies KJ, Baker MT, Grover BT, Kothari SN. Laparoscopic Roux-en-Y Gastric Bypass versus Sleeve Gastrectomy: 3-Year Outcomes.
    • Southwestern Surgical Congress 69th Annual Meeting, April 2-5, 2017; Maui, HI (Poster).

Videos:

  1. Nearing EE, Grover BT. Utility of Hybrid Rendezvous Technique with Laparoscopy and Endoscopy.
    • SAGES Annual meeting, March 22-25, 2017; Houston, TX.
    • Gundersen Medical Foundation Academic Day, May 23, 2017; La Crosse, WI.

2015-2016

Van Osdol, Andrew D.

Publications:

  1. Van Osdol AD, Kothari SN. Hiatal Hernia Overview. In ACS Multimedia Atlas of Surgery: Bariatric Surgery Volume (Asbun HJ, Jones DB, Pomp A, Rosenthal RJ, eds). Ciné-Med, Inc., Woodbury, CT: 2017.
  2. Van Osdol AD, Grover BT, Borgert AJ, Kallies KJ, Kothari SN. Impact of Laparoscopic Roux-en-Y Gastric Bypass versus Sleeve Gastrectomy on Postoperative Lipid Values. Surg Obes Relat Dis. 2017 Mar;13(3):399-403.
  3. Van Osdol AD, Kallies KJ, Fredrickson KA, Kothari SN. A Different Kind of Craving: Incidence and Treatment of Pica after Laparoscopic Roux-en-Y Gastric Bypass. World J Surg. 2017;41(9):2324-2328.

Presentations:

  1. Brockmeyer JR, Van Osdol AD, Kallies KJ, Baker MT, Grover BT, Kothari SN. Management of Bleeding Complications after Bariatric Surgery. (Poster)
    • American College of Surgeons Clinical Congress, October 4-8, 2015; Chicago, IL.
  2. Van Osdol AD, Borgert AJ, Kallies KJ, Kothari SN, Grover BT. Micronutrient Deficiencies in Patients after Laparoscopic Roux-en-Y Gastric Bypass versus Sleeve Gastrectomy (Poster).
    • ASMBS ObesityWeek, November 2-7, 2015; Los Angeles, CA.
  3. Van Osdol AD, Kallies KJ, Kothari SN. A Different Kind of Craving: Incidence and Treatment of Pica after Laparoscopic Roux-en-Y Gastric Bypass.
    • ASMBS ObesityWeek, November 2-7, 2015; Los Angeles, CA. (Poster)
    • WI Surgical Society Annual Meeting, November 13-14, 2015; Kohler, WI. (Poster)
  4. Van Osdol AD, Borgert AJ, Kallies KJ, Kothari SN, Grover BT. Impact of Laparoscopic Roux-en-Y Gastric Bypass versus Sleeve Gastrectomy on Postoperative Lipid Values.
    • ASMBS ObesityWeek, November 2-7, 2015; Los Angeles, CA. (Poster)
    • WI Surgical Society Annual Meeting, November 13-14, 2015; Kohler, WI.
  5. Van Osdol AD, Kallies KJ, Grover BT. Gallbladder Volvulus: Case Report and Contemporary Review of the Literature.
    • Southwestern Surgical Congress, April 3-6, 2016; Coronado, CA. (Poster)

Videos:

  1. Van Osdol AD, Baker MT, Kothari SN. Out of Sight, but not out of Mind: Excluded Stomach Pathology after Roux-en-Y Gastric Bypass.
    • ASMBS ObesityWeek, November 2-7, 2015; Los Angeles, CA.  *Awarded Top Video*
  2. Van Osdol AD, Brockmeyer JR, Kothari SN. Foreign Body Ingestion Resulting in Multiple Laparoscopic Gastric Extractions.
    • WI Surgical Society Annual Meeting, November 13-14, 2015; Kohler, WI.
  3. Van Osdol AD, Grover BT. Gallbladder volvulus.
    • SAGES Annual Meeting, March 16-19, 2016; Boston, MA.

2014-2015

Brockmeyer, Joel R.

Publications:

  1. Brockmeyer JR, Kothari SN. Marginal and Peptic Ulcers: Prevention, Diagnosis, and Management in Bariatric Complications and Emergencies (Ed. Herron). Springer, New York, NY; 2016.
  2. Brockmeyer JR, Grover BT, Kothari SN. Management of Biliary Symptoms following Bariatric Surgery. Am J Surg. 2015;210(6):1010-1017.
  3. Brockmeyer JR, Connolly EE, Wittchow RJ, Kothari SN. Resolution of Fundic Gland Polyposis following Laparoscopic Magnetic Sphincter Augmentation. Case Rep Gastrointest Med. Case Rep Gastrointest Med. 2015;2015:576263.

Presentations:

  1. Brockmeyer JR, Kallies KJ, Baker MT, Grover BT, Kothari SN. Management of Bleeding Complications after Bariatric Surgery.
    • Wisconsin Surgical Society, November 14-15, 2014; Kohler, WI.
  2. Brockmeyer JR, Grover BT, Kothari SN. Management of Biliary Symptoms following Bariatric Surgery.
    • Southwestern Surgical Congress, April 26-29, 2015; Monterey, CA.
  3. Brockmeyer JR, Grover BT, Kallies KJ, Kothari SN. Glycemic Control Immediately following Bariatric Surgery: Roux-en-Y Gastric Bypass versus Sleeve Gastrectomy (Quick shot).
    • Southwestern Surgical Congress, April 26-29, 2015; Monterey, CA.            
  4. Brockmeyer JR, Vegel AJ, Kallies KJ, Benden DM, SN Kothari, SN. Impact of Obesity on Cesarean Section Outcomes (Poster).
    • Southwestern Surgical Congress, April 26-29, 2015; Monterey, CA.

Videos:

  1. Brockmeyer JR, Kothari SN. Surgical Treatment of Gastrointestinal Bleeding due to Gastric Lipoma.
    • Mid-America Bariatric Summit, October 3, 2014; Chicago, IL.
  2. Brockmeyer JR, Kothari SN. Minimally Invasive Jejunostomy using a Novel Hybrid Technique.
    • Wisconsin Surgical Society, November 14-15, 2014; Kohler, WI.
  3. Brockmeyer JR, Van Osdol AD, Paramesh V, Kothari SN. Laparoscopic-Assisted Thoracotomy for Intrathoracic Stomach: A Hybridized Approach.
    • SAGES Annual Meeting, March 16-19, 2016; Boston, MA.

2013-2014

Pfeiffer, Joshua D.

Publications:

  1. Pfeiffer JD, Kothari SN. History of Bariatric Surgery in Obesity Care and Bariatric Surgery (Murayama K, Kothari SN, eds). World Scientific Pub Co Inc., Hackensack, NJ; 2016.

Presentations:

  1. Pfeiffer JD, Kallies KJ, Al-Hamadani M, Kothari SN. Hospital Admissions for Patients after Laparoscopic Roux-en-Y Gastric Bypass Surgery vs. Patients Denied Surgery for Insurance-related Reasons.
    • Wisconsin Surgical Society, November 2013; Kohler, WI.
      *Awarded Best Clinical Presentation*
  2. American Society for Metabolic and Bariatric Surgery Annual Meeting, November 2-7, 2014; Boston, MA (Poster of Distinction).
  3. Pfeiffer JD, Gunderson KL, Kallies KJ, Al-Hamadini M, Miller RF, Kothari SN. Comparative Effectiveness of Surgeon versus Pharmacist Preoperative Antibiotic Selection
    • Southwestern Surgical Congress (Quick shot), April 2014; Scottsdale, AZ.

Videos:

  1. Pfeiffer JD, Kothari SN.  Laparoendoscopic Techniques for Gastrointestinal Stromal Tumor Resection.
    • Wisconsin Surgical Society, November 9, 2013; Kohler, WI.
  2. Pfeiffer JD, Kothari SN. Proximal Gastrectomy with Roux-en-Y Reconstruction as a Salvage Procedure for Multiple Failed Fundoplications in an Obese Patient.
    • American Society for Metabolic and Bariatric Surgery Annual Meeting, November 2-7 2014; Boston, MA.
      *Top Video Award*

2012-2013

Obinwanne, Kosisochi M.

Publications:

  1. Kothari SN, Obinwanne KM, Baker MT, Mathiason MA, Kallies KJ. A Prospective, Blinded Comparison of Laparoscopic Ultrasound to Transabdominal Ultrasound for the Detection of Gallbladder Pathology in Morbidly Obese Patients. J Am Coll Surg. 2013; 216(6):1057-62.
  2. Obinwanne KM, Fredrickson KA, Mathiason MA, Kallies KJ, Kothari SN. Incidence, Treatment, and Outcomes of Iron Deficiency after Laparoscopic Roux-en-Y Gastric Bypass: A 10-year Review. J Am Coll Surg. 2014;218(2):246-52.
  3. Obinwanne KM, Kothari SN. Revisions for Failed Weight Loss. Curr Surg Rep. 2013;1(3): 149-159.
  4. Obinwanne KM, Riess KP, Kallies KJ, Mathiason MA, Manske BD, Kothari SN. Effect of Laparoscopic Gastric Bypass on Bone Mineral Density and Markers of Bone Turnover. Surg Obes Relat Dis. 2014 Nov-Dec;10(6):1056-62.

Presentations:

  1. Kothari SN, Obinwanne KM, Baker MT, Mathiason MA, Kallies KJ. A Prospective, Blinded Comparison of Laparoscopic Ultrasound to Transabdominal Ultrasound for the Detection of Gallbladder Pathology in Morbidly Obese Patients.
    • American College of Surgeons Annual Congress, October 2012; Chicago, IL.
  2. Obinwanne KM, Fredrickson KA, Mathiason MA, Kallies KJ, Kothari SN. Incidence, Treatment, and Outcomes of Iron Deficiency after Laparoscopic Roux-en-Y Gastric Bypass: A 10-year Review.
    • Wisconsin Surgical Society (Poster), November 2012; Kohler, WI.
    • American Society of Metabolic and Bariatric Surgery Annual Meeting, November 2013; Atlanta, GA.

Videos:

  1. Obinwanne KM, Kothari SN. Minimally Invasive Esophagectomy for end-stage Achalasia following Failed Heller Myotomies.
    • American College of Surgeons Annual Clinical Congress, October 8, 2013; Washington DC.

2011-2012

Gilmore, Megan M.

Publications:

  1. Gilmore MM, Mathiason MA, Kallies KJ, Kothari SN. Varying Marginal Ulcer Rates in Patients Undergoing Laparoscopic Roux-en-Y Gastric Bypass for Morbid Obesity vs. Gastroesophageal Reflux Disease: Is the Acid Pocket to Blame? Surg Obes Relat Dis. 2013;9(6):862-6.

Presentations:

  1. Gilmore MM, Kallies KJ, Mathiason MA, Kothari SN. Laparoscopic Roux-en-Y Gastric Bypass for Morbid Obesity versus Gastroesophageal Reflux Disease. Same Operation, Different Outcomes: The Implication of the Acid Pocket.
    • Wisconsin Surgical Society, November 4, 2011; Kohler, WI.
    • American Society of Metabolic and Bariatric Surgery (ASMBS) Annual Meeting (Poster), June 2012; San Diego, CA.
  2. Gilmore MM, Kothari SN. Laparoscopic revision of failed heller myotomy
    • SWSC (Poster), March 2012; Rancho Palos Verdes, CA.

Videos:

  1. Gilmore MM, Kothari SN. Laparoscopic heller myotomy for end stage achalasia
    • Society of American Gastrointestinal and Endoscopic Surgeons (SAGES) (video channel), March 7-10, 2012; San Diego, CA.
  2. Gilmore MM, Kothari SN. Candy Cane Roux Syndrome: Presentation and Surgical Treatment.
    • American Society of Metabolic and Bariatric Surgery (ASMBS) Annual Meeting, June 2012; San Diego, CA.
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