Presentation on theme: "Vomiting, Diarrhea & Constipation Mark J. Koruda, MD Professor of Surgery."— Presentation transcript:
Vomiting, Diarrhea & Constipation Mark J. Koruda, MD Professor of Surgery
Assumptions Students understand the anatomy, embryology and physiology of the gastrointestinal tract.
Case 1 A 54-year-old woman presents with a two day history of crampy abdominal pain followed by episodes of bilious emesis. Important Items in the History? Previously hysterectomy for treatment of cervical cancer.
Case 1 What findings should be looked for on physical exam? Distended No peritoneal signs
Case 1 What laboratory tests should be ordered?
Small Bowel Obstruction Laboratory Evaluation May see hypochloremic, hypokalemic metabolic alkalosis if having frequent emesis (proximal obstruction). May see evidence of contraction alkalosis –Increased H/H, BUN. WBC usually normal early.
Case 1 What laboratory tests should be ordered? What diagnostic tests should be ordered?
Small Bowel Obstruction Radiologic Evaluation Xrays: ? AFLs, ? Free Air, ? Distal Gas UGI / SBFT: Identify mechanical obstruction Enteroclysis: Independent of gastric emptying CT Scan: ? Free Air, ? Pneumatosis, ? Tumor
Small Bowel Obstruction Etiologies Adhesions Malignancy External or Internal Hernia Volvulus Crohn’s Disease Intra-abdominal Abscess
Small Bowel Obstruction Etiologies (Cont.) Radiation Stricture Foreign Body Gallstone Ileus Meckel’s Diverticulum Intramural Hematoma Mesenteric Ischemia Intussusception
Small Bowel Obstruction Partial vs. Total Why Not Just Wait?? –Potential for Closed Loop Obstruction –Risk of Ischemia / Perforation (4-6 hrs)
Small Bowel Obstruction Treatment Correct intravascular volume deficit NGT vs. Miller-Abbott or Cantor Tubes Serial Exams Operation if no improvement or if signs of complete (closed loop) obstruction or incarceration. Evaluation of Bowel Viability
Small Bowel Obstruction Special Cases Early Postoperative SBO –<1% risk in first month –Must be considered after 7 days of “ileus” since adhesions become dense in 2-3 weeks. Recurrent SBO (5-15%) Malignant Obstruction Radiation Fibrosis
Case 2 A 72-year-old man presents with a two month history of gradually increasing constipation. Key Points in History?
Large Bowel Obstruction Diagnosis Crampy Pain Onset may be acute or insidious Distension (50-60% have competent ileo-cecal valve and develop severe distension) Xrays: cm cecum, perforation risk Contrast enema: Obstruction vs Oglive’s Consider rigid sigmoidoscopy to r/o and treat sigmoid volvulus
Case 2 Physical Exam What further tests are indicated
Large Bowel Obstruction Etiologies Colon Cancer Diverticulitis Extrinsic Cancer Fecal Impaction Intussusception Volvulus Incarcerated Hernias
Large Bowel Obstruction Colon Cancer 20% of colon cancers present with obstruction Left-sided lesions are more prone to obstruct (more narrow lumen, more solid fecal stream)
Large Bowel Obstruction Treatment IVF NGT Operation –Emergently if signs of peritonitis / perforation –Prep bowel if possible Is an ostomy necessary? –Right vs. Left-sided Lesions –Traditional vs. Newer Attitudes
Large Bowel Dysfunction Inflammation Colonic Inertia Etc
Oglive’s Syndrome (Colonic Pseudo-Obstruction) May mimic mechanical obstruction Associated Conditions Treatment: –Rectal tube / enemas /exams (work in most) –Colonoscopic decompression (80-90% eff.) –Surgery (Cecostomy vs. Resection) - cecum >12 cm or peritoneal signs
Case 3 A 54-yo Caucasian male with history of ileocolonic Crohn's disease, s/p ileocolectomy in 1979, who has not been on any Rx for CD. Presents to the UNC ER complaining of crampy abdominal pain that began at 8 hrs earlier located in the right lower and left lower quadrant. He also had nausea and vomiting as well as decreasing flatus associated. The patient stated his last BM was on the day of admission. He stated that the pain feels like his previous obstructions. Occurring every couple of months, recently increasing in frequency. No fevers. About 10 lb weight loss. Key Points in History
What Is Crohn’s Disease? Crohn’s disease (CD) is an inflammatory bowel disorder that may affect any part of the gastro-intestinal (GI) tract The inflammation penetrates the lining of the GI tract and often causes ulcers to form Small Intestine Large Intestine (Colon) Appendix Esophagus Stomach Rectum
Case 3 Key Points in History
Case 3 Key Points in History –Crohn’s disease –Previous surgical history –No Crohn’s Rx –Chronic symptoms –Weight loss –No fevers –Crampy pain
Case 3 Physical Exam Diagnostic Studies? Differential Dx
Medical vs Surgical Management
Case 4 22yo UNC student presents with 3 mos of increasing “bloody diarrhea”, going to the bathroom 15-20x/day. “It rules my life!” Key Points in History
Case 4 22yo UNC student presents with 3 mos of increasing “bloody diarrhea”, going to the bathroom 15-20x/day. “It rules my life!” Key Points in History –Diarrhea –Bleeding