Keck School Faculty

Peter F Crookes, MD
Peter F Crookes, MD
Professor of Surgery;Chief of Surgical Education;Clerkship Program Director
2051 Marengo Street Health Sciences Campus Los Angeles
Peter F Crookes MD is Professor of Surgery at the Keck School of Medicine of the University of Southern California. He is a native of Belfast, Northern Ireland, and obtained his medical degree and surgical training there, and then traveled to Melbourne, Australia, and subsequently to Los Angeles, California, where he was recruited to USC in 1990. He is an upper GI and Bariatric surgeon and was for several years the director of the bariatric program. In addition, he has a special interest in medical and surgical education and is the recipient of numerous awards from the department and the Keck School of Medicine for his contributions in that area. He is the director of the Student Clerkship for the Keck School of Medicine. His research interests include a wide variety of problems related to morbid obesity and the effect of bariatric surgical procedures on numerous disease processes, as well as studies in the pathophysiology of diseases of the esophagus and stomach. He has published extensively on the metabolic changes associated with different types of bariatric surgery, as well as the physiology of GERD and achalasia. He teaches medical ethics to medical students and surgical residents. He also has a lively interest in medical and surgical history and lectures and writes on historical topics of relevance to medicine and surgery.

Post-Nissen Dysphagia and Bloating Syndrome: Outcomes After Conversion to Toupet Fundoplication J Gastrointest Surg. 2017 03; 21(3):441-445. . View in PubMed

Professionalism of surgery Surg Endosc. 2015 Aug; 29(8):2072-6. . View in PubMed

Ethical considerations regarding the implementation of new technologies and techniques in surgery Surg Endosc. 2014 Aug; 28(8):2272-6. . View in PubMed

A framework for professionalism in surgery: what is important to medical students? Am J Surg. 2014 Feb; 207(2):255-9.. View in PubMed

Progressive mucosal injury in patients with gastroesophageal reflux disease and increasing peripheral blood eosinophil counts Arch Surg. 2010 Apr; 145(4):363-6. . View in PubMed

Short- and long-term surgical follow-up of the postbariatric surgery patient Gastroenterol Clin North Am. 2010 Mar; 39(1):135-46. . View in PubMed

High-resolution esophageal manometry: using technical advances for clinical advantages J Gastrointest Surg. 2010 Feb; 14 Suppl 1:S24-32. . View in PubMed

Measurement of gastric pH in ambulatory esophageal pH monitoring Surg Endosc. 2009 Sep; 23(9):1968-73. . View in PubMed

Obesity and gastroesophageal reflux: quantifying the association between body mass index, esophageal acid exposure, and lower esophageal sphincter status in a large series of patients with reflux symptoms J Gastrointest Surg. 2009 Aug; 13(8):1440-7. . View in PubMed

Prospective assessment of axial back pain symptoms before and after bariatric weight reduction surgery Spine J. 2009 Jun; 9(6):454-63. . View in PubMed

Effect of surgically induced weight loss on pelvic floor disorders in morbidly obese women Ann Surg. 2009 Jan; 249(1):72-6. . View in PubMed

Bowel habits after gastric bypass versus the duodenal switch operation Obes Surg. 2008 Dec; 18(12):1563-6. . View in PubMed

Fecal incontinence among morbid obese women seeking for weight loss surgery: an underappreciated association with adverse impact on quality of life Int J Colorectal Dis. 2008 May; 23(5):493-7. . View in PubMed

Maintenance of weight loss in patients with body mass index >60 kg/m2: importance of length of small bowel bypassed Surg Obes Relat Dis. 2008 May-Jun; 4(3):404-6; discussion 406-7. . View in PubMed

Percutaneous gastric drainage as a treatment for small bowel obstruction after gastric bypass Obes Surg. 2007 Oct; 17(10):1411-2. . View in PubMed

Revision of the duodenal switch: indications, technique, and outcomes J Am Coll Surg. 2007 Apr; 204(4):603-8. . View in PubMed

The history of gastric surgery: the contribution of the Belfast School Ulster Med J. 2007 Jan; 76(1):31-6. . View in PubMed

The value of pulmonary function testing prior to bariatric surgery Obes Surg. 2006 Dec; 16(12):1570-3. . View in PubMed

Sleeve gastrectomy in the high-risk patient Obes Surg. 2006 Nov; 16(11):1445-9. . View in PubMed

Response of the lower esophageal sphincter to gastric distention by carbonated beverages J Gastrointest Surg. 2006 Jun; 10(6):870-7. . View in PubMed

Long-term outcome of total knee replacement: does obesity matter? Obes Surg. 2006 Jan; 16(1):35-8.. View in PubMed

Surgical treatment of morbid obesity Annu Rev Med. 2006; 57:243-64. . View in PubMed

Esophageal dysfunction in cervical spinal cord injury: a potentially important mechanism of aspiration J Trauma. 2005 Oct; 59(4):905-11. . View in PubMed

Acoustic reflectometry esophageal profiles minimally affected by massive gas ventilation Am J Emerg Med. 2005 Oct; 23(6):747-53. . View in PubMed

Readers' responses to the webcast video editorial entitled "Willie Sutton and screening for alcohol in the emergency department and trauma center" MedGenMed. 2005 Feb 24; 7(1):35. . View in PubMed

Patterns of Internet use: bariatric versus colorectal patients in a private institution J Am Coll Surg. 2004 Aug; 199(2):223-8. . View in PubMed

Longitudinal gastrectomy as a treatment for the high-risk super-obese patient Obes Surg. 2004 Apr; 14(4):492-7. . View in PubMed

Surgical treatment of morbid obesity in schizophrenic patients Obes Surg. 2004 Mar; 14(3):349-52. . View in PubMed

Preoperative lower esophageal sphincter pressure affects outcome of laparoscopic esophageal myotomy for achalasia J Gastrointest Surg. 2004 Mar-Apr; 8(3):328-34. . View in PubMed

Calcium metabolism in the morbidly obese Obes Surg. 2004 Jan; 14(1):9-12. . View in PubMed

Achalasia in the context of morbid obesity: a rare but important association Obes Surg. 2003 Dec; 13(6):896-900. . View in PubMed

Surgical management of hypertensive lower esophageal sphincter with dysphagia or chest pain J Gastrointest Surg. 2003 Dec; 7(8):990-6; discussion 996. . View in PubMed

Gastrointestinal hemorrhage: is the surgeon obsolete? Emerg Med Clin North Am. 2003 Nov; 21(4):1017-56.. View in PubMed

The duodenal switch operation for the treatment of morbid obesity Ann Surg. 2003 Oct; 238(4):618-27; discussion 627-8. . View in PubMed

The significance of elevated levels of parathyroid hormone in patients with morbid obesity before and after bariatric surgery Arch Surg. 2003 Aug; 138(8):891-7. . View in PubMed

The hypertensive lower esophageal sphincter: a motility disorder with manometric features of outflow obstruction J Gastrointest Surg. 2003 Jul-Aug; 7(5):692-700. . View in PubMed

Manometry of the lower esophageal sphincter: inter- and intraindividual variability of slow motorized pull-through versus station pull-through manometry Dig Dis Sci. 2003 Jun; 48(6):1057-61. . View in PubMed

Rhabdomyolysis of gluteal muscles leading to renal failure: a potentially fatal complication of surgery in the morbidly obese Obes Surg. 2003 Apr; 13(2):302-5. . View in PubMed

Excellent quality of life after Nissen fundoplication depends on successful elimination of reflux symptoms and not the invasiveness of the surgical approach Ann Thorac Surg. 2002 Oct; 74(4):1019-24; discussion 1024-5. . View in PubMed

Gastric cancer Clin Obstet Gynecol. 2002 Sep; 45(3):892-903. . View in PubMed

Vagal-sparing esophagectomy: a more physiologic alternative Ann Surg. 2002 Sep; 236(3):324-35; discussion 335-6. . View in PubMed

A safe and noninvasive test for vagal integrity revisited Arch Surg. 2002 Aug; 137(8):954-8; discussion 958-9. . View in PubMed

Physiologic basis for the treatment of epiphrenic diverticulum Ann Surg. 2002 Mar; 235(3):346-54. . View in PubMed

Absence of gastroesophageal reflux disease in a majority of patients taking acid suppression medications after Nissen fundoplication J Gastrointest Surg. 2002 Jan-Feb; 6(1):3-9; discussion 10. . View in PubMed

Physiologic mechanism and preoperative prediction of new-onset dysphagia after laparoscopic Nissen fundoplication J Gastrointest Surg. 2002 Jan-Feb; 6(1):22-7; discussion 27-8. . View in PubMed

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