rectal bleeding jessica cintolo scott q. nguyen, m.d. celia divino, m.d. mount sinai school of...
TRANSCRIPT
![Page 1: Rectal Bleeding Jessica Cintolo Scott Q. Nguyen, M.D. Celia Divino, M.D. Mount Sinai School of Medicine Department of Surgery](https://reader030.vdocuments.site/reader030/viewer/2022032701/56649c9c5503460f9495b82f/html5/thumbnails/1.jpg)
Rectal Bleeding
Jessica Cintolo
Scott Q. Nguyen, M.D.
Celia Divino, M.D.
Mount Sinai School of MedicineMount Sinai School of MedicineDepartment of SurgeryDepartment of Surgery
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Ms. C
Ms. C is a 33-year-old female who presents to her primary care physician complaining of bloody bowel movements for the past 4 weeks.
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History
What other points of the history do you want to know?
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History, Ms. C Consider the following:
• Characterization of Symptoms
• Temporal sequence• Alleviating /
Exacerbating factors:
• Associated Signs & Symptoms
• Pertinent PMH• ROS• MEDS• Relevant Family Hx.• Relevant Social Hx.
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History, Ms. C
Characterization of Symptoms and Temporal Sequence of Events• Patient noticed bright red blood in her stool
beginning 4 weeks ago, sometimes mixed with mucous. Her bowel movements have been loose but formed.
• She has approximately 3 bowel movements daily and often feels an urgent need to defecate.
• She has also noticed intermittent crampy abdominal pain and a decrease in appetite over the past month.
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History, Ms. C
Alleviating/Precipitating Factors• Abdominal pain often worsens with eating• Nothing alleviates symptoms
Associated Symptoms• No Nausea or Vomiting• Decreased Appetite• Weight loss of about 10 lbs over past month
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History, Ms. C
Has this happened before?• She has experienced abdominal pain and
bloody diarrhea twice in the past year but never lasting more than 2-3 days
Sick Contacts and Travel History• No known sick contacts
• No recent travel out of the country
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Additional History, Ms. C
PMH• None
PSH• Appendectomy at age 9
Meds:• None
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Additional History, Ms. C
Family History• Several family members have had “intestinal
problems” Social History
• Smoked ½ pack per day for 10 years until 2 years ago, social ETOH consumption, no other drug use
• Sexually active in monogamous relationship
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What is you Differential Diagnosis?
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Differential DiagnosisBased on History and Presentation
Inflammatory Bowel Disease• Crohn’s Disease• Ulcerative Colitis
Infectious Colitis Parasites: Strongyloidiasis, Amebiasis Rectal or Colon Cancer or Lymphoma Diverticulitis Radiation Enteritis Gastroenteritis
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Physical Examination
What specifically would you look for?
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Physical Examination, Ms. C
Vital Signs: T = 37.3, P = 86, BP = 110/76, RR = 14 Appearance: thin, pale, but in no acute distress HEENT: Sclera anicteric, mucous membranes pink and
moist Heart: RRR Lungs: mild rales at bases Abdomen: normoactive BS, non-distended, mildly
tender throughout, no guarding or rebound tenderness Rectal: stool in vault mixed with bright red blood, no
masses, no external anal lesions
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Differential Diagnosis
Would you like to update your differential?
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Laboratory
What would you obtain?
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Lab Results
MCV = 82%
LFTs WNL PT/PTT WNL Stool O&P negative C. difficile toxin negative
6.710.9
32.3225 138 108
3.7 24.0
12
0.798
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Laboratory Results-Discussion
Normal WBC – infection less likely Mild Anemia – likely from GI bleeding with
chronic blood loss given low MCV Electrolytes - Normal C. difficle toxin negative - sensitivity is 80-99%
based on assay with specificity of 99% making infection with C. difficile highly unlikely
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What are the Next Steps in Diagnosis and Management?
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Further Diagnosis and Management
• Interventions?
• Imaging?
• Endoscopy?
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Abdominal X-Ray
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X-ray interpretation
• Normal Abdominal Film• No colonic dilatation• No signs of small bowel obstruction or ileus
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Colonoscopy
What would you expect to see?
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Colonoscopy: Findings & Discussion
Continuous inflammation of colonic mucous involving rectum and extending to the splenic flexure and into the early transverse colon
Mucosa is erythematous, edematous, and friable Pseudopolyps – inflammatory, non-neoplastic
mucosal projection Mucosal Biopsy demonstrates distortion of
architecture with crypt branching, crypt abscess containing inflammatory cells, ulceration; no granulomas
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Final Diagnosis
Ulcerative Colitis
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What next?
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Medical Management for Mild-to-Moderate Ulcerative Colitis
5-ASA agents• oral and rectal preparations
Oral Corticosteroids 6-MP/Azathioprine
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Medical Management, Ms. C
Ms. C is started on Sulfasalazine 1g TID and also given a course of steroids
Her symptoms improve dramatically over the next few days
She maintains Sulfasalazine therapy for disease control despite minimal symptoms
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Ms. C returns
Ms. C now presents to the emergency department 3 weeks after completing the steroid taper. She began having crampy abdominal pain and bloody diarrhea 2 weeks ago increasing in severity over the past 5 days.
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History, Ms. C Characterization of Symptoms and Temporal
Sequence of Events• Abdominal pain began gradually 2 weeks ago, was
intermittent and crampy, but now worsening in severity and constant
• Diarrhea also began 2 weeks ago. It was watery and mixed with bright red blood. Over the past 5 days patient has noted more blood in the toilet bowl.
• She has been having >10 Bowel movements daily• Today diarrhea is less than it has been the day
before
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History, Ms. C
Alleviating/Precipitating Factors• She attempted to take over-the-counter anti-
diarrheal agents without relief• Patient feels worse with eating; she has avoided oral
intake for the past week Associated Symptoms
• Subjective fevers and chills• Dizziness, particularly on standing• Nausea, but no vomiting• No joint pain, no visual changes or eye pain
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Physical Examination, Ms. C
V.S. T=38.7°C, BP=104/60 (seated), 90/50 (standing), HR=102 (seated), 116 (standing)
General: thin, uncomfortable HEENT: sclera anicteric, mucous
membranes dry, no oral lesions Cardiovascular: tachycardic, normal S1,
S2, grade II/VI systolic flow murmur
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Physical Exam
Lungs: Clear to Auscultation Bilaterally Abdominal Exam: Hypoactive BS, mildly
distended, soft, diffusely tender but without rebound or guarding
Rectal: no external anal lesions, heme + stools
Extremities: trace pedal edema
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Differential DiagnosisWould you like to update your differential?
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Laboratory
What would you obtain?
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Lab Results
VBG: 7.35/35/40 AG= 10 Lactate: 1.1 Cultures and Stool Studies
pending
8.9
2811.2
PMN’s =80% MCV = 80.1 LFTs WNL PT/PTT normal
300140 111
2.9 18
37
1.3
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Laboratory Results-Discussion
Leukocytosis – consistent with inflammation, could indicate infection
Anemia – indicative of blood loss, likely acute on chronic blood loss given low MCV
Mild Non-anion gap Metabolic Acidosis with appropriate respiratory compensation – seen in the context of diarrhea
Hypokalemia – GI losses and volume depletion
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Interventions at this point?
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Consider the following Immediate Interventions
Admit to Hospital NPO Fluid Resuscitation with Isotonic
Crystalloid• (NS, LR, or Plasmalyte) Correct Electrolyte Abnormalities Stop any narcotic, antidiarrheal, or
anticholinergic agents Begin IV Corticosteroids
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Studies
Do you want any further studies?
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Abdominal X-Ray
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Abdominal X-ray Discussion
Dilated Colon Toxic Megacolon
• Dilation of Transverse or Ascending Colon >6cm• No small bowel pathology
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Colonoscopy
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Colonoscopy findings
Fulminant Colitis• Friable, Ulcerated Mucosa
• Mucosal Edema and Erythema
• Hemorrhagic
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Colonoscopy - Discussion
Generally avoided during fulminant presentations of colitis
May be used cautiously to determine presence of ischemic or pseudomembranous colitis
Minimize insufflation used Should not be performed when there is
colonic dilation and is contraindicated for cases of toxic megacolon
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Abdominal CT (not necessary)
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Abdominal CT - Interpretation
Severe Colitis• Diffuse Colonic Wall Thickening with
Submucosal Edema
• Pericolic Stranding
• Ascites
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Medical Management of Severe Ulcerative Colitis
Cyclosporine• Calcineurin inhibitor• Administer 2-4mg/kg/day as continuous IV infusion
if patient not responding to IV corticosteroids
Infliximab• Monoclonal antibody to TNFα• Administered as IV infusion
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Hospital Course
Symptoms do not improve on steroids and cyclosporine
She continues to experience bloody diarrhea and worsening abdominal pain.
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Final Diagnosis
Ulcerative Colitis complicated by Fulminant Colitis with Toxic Megacolon
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What next?
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Management
Continue Supportive Therapy Medical Management
• Broad spectrum antibiotics – will treat any infectious component and also offer coverage should perforation occur
• Continue IV corticosteroids
Bowel Decompression may be considered when colon is dilated using Rectal Tube
Prepare for Surgery
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Indications for Surgery
Perforation Uncontrolled Bleeding Progressive Dilation Worsening Symptoms Failure to Improve with Medical Management within
24 hours
* Delay in surgical intervention leading to emergent surgery is associated with increased morbidity and mortality.
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Surgical Options
Subtotal Colectomy and End Ileostomy (leaving rectal stump)• Avoid the prolonged procedure of total proctocolectomy
and extensive pelvic dissection• Each may be followed by elective restoration of bowel
continuity and pouch construction at a later date
Total Proctocolectomy with Ileal Pouch–Anal Anastomosis (IPAA)• rarely performed during fulminant presentations due to
high incidence of morbidity• increased rate of reoperation and anastomotic
complications
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Subtotal Colectomy
Remove diseased colon Create ileostomy Allow toxic state to resolve Restorative proctocolectomy with ileal pouch–anal
anastomosis (IPAA) at a later date
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Discussion Serious Complications of fulminant presentations of
Ulcerative Colitis include:• Massive Hemorrhage• Perforation• Toxic Megacolon
Toxic Megacolon is defined as colonic distension >6cm in the presence of an active inflammatory process.
Though most commonly associated with IBD, toxic megacolon may also complicate infectious colitis including Pseudomembranous colitis.
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Discussion
Diagnosis
• There may be a history of Ulcerative Colitis, but approximately 10% of patients will present initially with fulminant colitis.
• History usually includes cramping abdominal pain, increased bowel movements, and stool mixed with blood and mucous.
• There is often leukocytosis, anemia, and electrolyte disturbances.
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Discussion
Diagnosis• If toxic megacolon occurs, dilated colon will be
visible on abdominal x-ray and CT. CT is a good non-invasive modality for identifying subclinical complications of fulminant colitis such as perforations and abscesses.
• Colonoscopy should be used with care when disease is active and is contraindicated if colon is dilated or patient has fulminant colitis
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Discussion
Management• Non-surgical management includes aggressive fluid
resuscitation, correction of electrolyte abnormalities, administration of broad spectrum antibiotics, and in the case of IBD (ulcerative colitis or Crohn’s disease), administration of corticosteroids
• Additional medical management may include immune modulator therapy with cyclosporine or infliximab
• Colonic decompression for dilated colon may be employed
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Discussion
Management• Surgery is indicated when signs and symptoms fail
to improve with medical management or worsen • Emergent Surgery is also warranted in the setting of
perforation, hemorrhage, progressive dilation or toxic megacolon.
• Surgical Management, consists of subtotal colectomy with end-ileostomy for emergency situations and must be pursued aggressively when indicated as delay leads to increased morbidity and mortality
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QUESTIONS ??????
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References Baumgart DC, Sandborn WJ. “Inflammatory Bowel Disease: clinical aspects
and evolving therapies.” Lancet. 2007;369:1641-57. Cima, RR and Pemberton JH. “Surgical Indications and Procedures in
Ulcerative Colitis.” Current Treatment Options in Gastroenterology. 2004;7:181-190
Modigliani, R. “Medical Management of Fulminant Colitis.” Inflammatory Bowel Diseases. 2002;8(2):129-134.
Bullard KM, Rothenberger DA. “Colon, Rectum & Anus.” Schwartz's Principles of Surgery. 8th Edition.
S. Ian Gan and P.L. Beck. “A New Look at Toxic Megacolon: An Update and Review of Incidence, Etiology, Pathogenesis, and Management.” The American Journal of Gastroenterology. 2003;98(11):2364-2371.
Rüssmann H, Panthel K, Bader RD, Schmitt C, Schaumann R. “Evaluation of three rapid assays for detection of Clostridium difficile toxin A and toxin B in stool specimens.” Eur J Clin Microbiol Infect Dis. 2007 Feb;26(2):115-9
Strong, Scott. “Fulminant Colitis: the case for operative management.” Inflammatory Bowel Diseases. 2002;8(2):135-137.
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