Minimally Invasive Bariatric Surgery & Advanced Laparoscopy

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.

This fellowship provides extensive experience in the surgical management of morbid obesity with emphasis on laparoscopic Roux-en-Y gastric bypass, laparoscopic sleeve and Lap-Band techniques. 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 be 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.

Minimally Invasive Bariatric Surgery 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.

Fellowship research

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. 2016; in press.
  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. Nutr Clin Pract. 2016; under review.

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)

Video Projects:

  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). 2015, in press.
  2. Brockmeyer JR, Grover BT, Kothari SN. Management of Biliary Symptoms following Bariatric Surgery. Manuscript submitted to Am J Surg; under review.
  3. Brockmeyer JR, Pfeiffer JD, Kallies KJ, Al-Hamadani M, Kothari SN. Hospital Admissions for Patients after Laparoscopic Roux-en-Y Gastric Bypass Surgery versus Patients Denied Surgery for Insurance-related Reasons. Manuscript in progress.
  4. Brockmeyer JR, Connolly EE, Wittchow RJ, Kothari SN. Resolution of Fundic Gland Polyposis following Laparoscopic Magnetic Sphincter Augmentation. Submission to Case Reports in Gastrointestinal Medicine pending.

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.

Video Projects:

  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.

2013-2014

Pfeiffer, Joshua D.

Publications:

  1. Pfeiffer JD, Kothari SN. History of Bariatric Surgery. Bariatric Surgery (Eds. Murayama, Kothari). 2014, in press.

Presentations:

  1. Pfeiffer JD, Chilsen AM, Al-Hamadini M, Kallies KJ, 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*
    • American Society for Metabolic and Bariatric Surgery Annual Meeting, November 2-7, 2014; Boston, MA.
  2. 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.

Video Projects:

  1. Pfeiffer JD, Kothari SN. Laparoendoscopic Techniques for Gastrointestinal Stromal Tumor Resection.
    • Wisconsin Surgical Society, November 9, 2013; Kohler, WI.
    • American College of Surgeons Clinical Congress, October 26-30, 2014; San Francisco, CA.

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; In progress.
  3. Obinwanne KM, Kothari SN. Revisions for Failed Weight Loss. Current Surgery Reports, in press.
  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; In Progress.

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.

Video Projects:

  1. 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. Sheff SR, Kothari SN. Repair of the giant hiatal hernia. J Long Term Eff Med Implants. 2010;20(2):139-48.
  2. Sheff SR, May MC, Carlisle SE, Kallies KJ, Mathiason MA, Kothari SN. Predictors of a Difficult Intubation in the Bariatric Patient: Does Preoperative Body Mass Index Matter? Surg Obes Relat Dis. 2013; in press.

Presentations:

  1. Sheff SR, May MC, Carlisle SE, Kallies KJ, Mathiason MA, Kothari SN. Anesthetic Considerations and Outcomes in the Bariatric Surgical Patient.
    • Wisconsin Surgical Society, November 6, 2010; Kohler, WI.
    • American Society of Metabolic and Bariatric Surgery (ASMBS) Annual Meeting, June 12-17, 2011, Orlando, FL.

Video Projects:

  1. Sheff SR, Bird JJ, Kothari SN. Conversion of Failed Laparoscopic Nissen Fundoplication to Gastric Bypass for the Management of Recurrent Gastroesophageal Reflux Disease. Society of American Gastrointestinal and Endoscopic Surgeons (SAGES), March 30 - April 2, 2011, San Antonio, TX.
  2. Sheff SR, Baker MT, Kothari SN. Obstructions after Laparoscopic Roux-en-Y gastric bypass. American College of Surgeons, October 27, 2011, San Francisco, CA.
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