PK X-\_rels/PK X-\ docProps/PK X-\ppt/PK X-\ ppt/_rels/PK X-\ ppt/charts/PK X-\ppt/charts/_rels/PK X-\ppt/embeddings/PK X-\ ppt/media/PK X-\ppt/slideLayouts/PK X-\ppt/slideLayouts/_rels/PK X-\ppt/slideMasters/PK X-\ppt/slideMasters/_rels/PK X-\ ppt/slides/PK X-\ppt/slides/_rels/PK X-\ ppt/theme/PK X-\ppt/notesMasters/PK X-\ppt/notesMasters/_rels/PK X-\ppt/notesSlides/PK X-\ppt/notesSlides/_rels/PK X-\` [Content_Types].xml PK X-\]] _rels/.rels PK X-\ 0 0 Microsoft Office PowerPoint On-screen Show (16:9) 0 15 15 0 0 false Fonts Used 2 Theme 1 Slide Titles 15 Arial Calibri Office Theme Slide 1Slide 2Slide 3Slide 4Slide 5Slide 6Slide 7Slide 8Slide 9Slide 10Slide 11Slide 12Slide 13Slide 14Slide 15 PptxGenJS false false false 16.0000 PK X-\KdocProps/core.xml Fecal Fistula and Enterocutaneous Fistulas PptxGenJS Presentation PptxGenJS PptxGenJS 1 2026-04-02T05:42:49Z 2026-04-02T05:42:49Z PK X-\ ppt/_rels/presentation.xml.rels PK X-\Oݨ ppt/theme/theme1.xmlPK X-\;G#yyppt/presentation.xml PK X-\Xppt/presProps.xml PK X-\ppt/tableStyles.xml PK X-\D >00ppt/viewProps.xml PK X-\H7t!ppt/slideLayouts/slideLayout1.xml PK X-\ђ77,ppt/slideLayouts/_rels/slideLayout1.xml.rels PK X-\Eppt/slides/slide1.xml SURGICAL EDUCATIONFecal Fistula &Enterocutaneous FistulasDiagnosis · Investigations · TreatmentGeneral Surgery | Gastrointestinal DivisionPK X-\3 ppt/slides/_rels/slide1.xml.rels PK X-\.ppt/notesSlides/notesSlide1.xml 1PK X-\:A*ppt/notesSlides/_rels/notesSlide1.xml.rels PK X-\[kQQppt/slides/slide2.xml LEARNING OBJECTIVES 1Define fecal fistula and enterocutaneous fistula (ECF) 2Identify common etiologies and risk factors for ECF formation 3Classify ECF using anatomical, functional, and SNAP criteria 4Describe the diagnostic approach including clinical and radiological assessment 5Outline appropriate investigations including laboratory and imaging studies 6Explain medical, nutritional, and surgical management strategies 7Recognize indications for operative intervention and principles of surgery 8Discuss prognosis, complications, and factors affecting spontaneous closurePK X-\2- ppt/slides/_rels/slide2.xml.rels PK X-\ppt/notesSlides/notesSlide2.xml 2PK X-\xշ*ppt/notesSlides/_rels/notesSlide2.xml.rels PK X-\nFFppt/slides/slide3.xml DEFINITIONS & CLASSIFICATION Enterocutaneous Fistula (ECF)An abnormal communication between the GI tract and the skin surface. Can involve any segment from stomach to rectum. Fecal FistulaA specific ECF involving the large bowel or distal small bowel, producing feculent output at the skin. Output is typically >500 mL/day. Enteroatmospheric FistulaA variant occurring in an open abdomen wound, where bowel opens directly to atmosphere without a tunnel. CLASSIFICATIONBy OutputLow: <200 mL/dayModerate: 200–500High: >500 mL/dayBy AnatomySimple (no abscess)Complex (abscess/radiation)By OriginSpontaneousPost-operative (75–85%)PK X-\W/ ppt/slides/_rels/slide3.xml.rels PK X-\K |Őppt/notesSlides/notesSlide3.xml 3PK X-\9 Y*ppt/notesSlides/_rels/notesSlide3.xml.rels PK X-\2=PbPbppt/slides/slide4.xml ETIOLOGY & RISK FACTORS 75–85%Post-operativeOrigin Post-operative (most common)Anastomotic leakInadvertent enterotomyDrain erosionMissed bowel injury Inflammatory Bowel DiseaseCrohn's disease (commonest non-operative)Ulcerative colitis (rare) Radiation EnteritisPelvic/abdominal radiotherapyEndarteritis → ischemia → perforation MalignancyColorectal, gynecological, lymphomaTumor invasion or post-resection leak Infection & InflammationIntra-abdominal abscess drainageDiverticulitis, appendicitis TraumaAbdominal trauma (penetrating/blunt)Foreign body perforationPK X-\` ppt/slides/_rels/slide4.xml.rels PK X-\vsppt/notesSlides/notesSlide4.xml 4PK X-\J *ppt/notesSlides/_rels/notesSlide4.xml.rels PK X-\pssppt/slides/slide5.xml PATHOPHYSIOLOGY STEP 11Bowel DisruptionAnastomotic breakdown, ischemia, or transmural inflammation creates a defect in bowel wall STEP 22Abscess FormationLuminal contents extravasate → loculated fluid collection → abscess cavity develops STEP 33Track FormationHigh intraluminal pressure forces content along path of least resistance toward the skin STEP 44EpithelializationTrack becomes lined with granulation then epithelial tissue — preventing spontaneous closure STEP 55Systemic EffectsFluid/electrolyte loss, sepsis, malnutrition, protein depletion, immune suppressionFRIEND Mnemonic for non-closure: Foreign body Radiation Infection/Inflammation Epithelialisation Neoplasm Distal obstructionPK X-\5 ppt/slides/_rels/slide5.xml.rels PK X-\W8ppt/notesSlides/notesSlide5.xml 5PK X-\Qe*ppt/notesSlides/_rels/notesSlide5.xml.rels PK X-\Q O Oppt/slides/slide6.xml CLINICAL PRESENTATION Local SignsVisible skin defect or wound breakdownFeculent/enteric discharge from woundErythema, maceration of surrounding skinPain or tenderness at fistula siteAssociated wound dehiscence Systemic FeaturesFever, tachycardia (sepsis)Dehydration, electrolyte imbalanceProfound weight loss / cachexiaHypoalbuminemia (malnutrition)Metabolic acidosis (high-output ECF) ComplicationsSepsis (leading cause of death ~75%)Severe malnutrition & muscle wastingSkin excoriation / breakdownIntra-abdominal abscessPsychological distress & depression⚠ Onset typically Day 5–10 post-operatively with unexpected wound drainage — 'test the discharge with Gastrografin!'PK X-\ج+ ppt/slides/_rels/slide6.xml.rels PK X-\zppt/notesSlides/notesSlide6.xml 6PK X-\=|*ppt/notesSlides/_rels/notesSlide6.xml.rels PK X-\ /PEaEappt/slides/slide7.xml SNAP CLASSIFICATION SYSTEMThe SNAP system guides treatment prioritization by addressing four key domains: SSepsisControl source: drainage / antibioticsBlood cultures if systemic sepsisIV antibiotics: broad-spectrum coverageGoal: Achieve sepsis-free state NNutritionAssess nutritional status (albumin, BMI)Enteral preferred over parenteralTPN if high-output or distal obstructionTarget: 25–30 kcal/kg/day AAnatomyDelineate fistula tract (CT / fistulogram)Identify associated abscess or obstructionAssess bowel continuity & lengthDocument any foreign bodies PProcedureConsider definitive surgery only after S, N, AMinimum 3–6 months non-operative trialSurgery: resection + primary anastomosisAvoid surgery in hostile abdomenPK X-\F ppt/slides/_rels/slide7.xml.rels PK X-\)lppt/notesSlides/notesSlide7.xml 7PK X-\|g*ppt/notesSlides/_rels/notesSlide7.xml.rels PK X-\mnUUppt/slides/slide8.xml DIAGNOSIS: HISTORY & PHYSICAL EXAMINATION 📋 HISTORYPresenting Complaint: Nature, colour & volume of discharge from wound/drain siteSurgical History: Recent abdominal procedures, anastomoses, mesh placementOnset & Duration: Day of discharge onset post-operatively (typically day 5–10)IBD/Malignancy: Previous Crohn's, UC, colorectal or pelvic cancerRadiation: Prior pelvic or abdominal radiotherapy historyMedications: Steroids, immunosuppressants (impair healing), NSAIDsNutritional Status: Pre-morbid weight, recent losses, diet tolerance 🔍 PHYSICAL EXAMINATIONGeneral:Malnutrition, cachexia, pallor, jaundiceVital signs: fever, tachycardia, hypotensionWound Assessment:Document number, location & size of openingsCharacter of output: colour, odour, consistencySkin excoriation / maceration extentAbdominal Exam:Tenderness, peritonism (abscess/leak)Palpable mass, abdominal wall defectStoma assessment if applicableNutritional Markers:BMI, muscle wasting (temporal, thenar)Mid-arm circumference, hand-grip strengthPK X-\6 ppt/slides/_rels/slide8.xml.rels PK X-\iސppt/notesSlides/notesSlide8.xml 8PK X-\pO*ppt/notesSlides/_rels/notesSlide8.xml.rels PK X-\hf={={ppt/slides/slide9.xml INVESTIGATIONS: LABORATORY STUDIES Full Blood Count (FBC)Hb ↓: anaemia of chronic disease / bleedingWBC ↑: infection / sepsisPlatelets: assess coagulopathyMCV: nutritional deficiencies Metabolic PanelNa⁺, K⁺, Cl⁻: electrolyte losses (critical!)Bicarbonate: metabolic acidosisBUN/Creatinine: dehydration, AKIBlood glucose: stress hyperglycaemia Liver Function & ProteinsAlbumin < 3.0 g/dL: severe malnutritionPre-albumin (rapid turnover marker)Total protein: overall nutritional statusLFTs: hepatic involvement, TPN toxicity Inflammatory MarkersCRP / ESR: infection / inflammatory activityProcalcitonin: bacterial sepsis indicatorBlood cultures: if systemic sepsisWound swab/MC&S: guide antibiotic therapy Haematological & SpecialCoagulation (PT, aPTT): coagulopathyZinc, Magnesium, Phosphate levelsThiamine, Folate, Vit B12: deficienciesCalprotectin: IBD activity monitoring Fistula Output AnalysisVolume per 24 hours (low / mod / high)Amylase: pancreatic fistula if elevatedBilirubin: biliary communicationCreatinine: urinary fistula if elevatedPK X-\>$ ppt/slides/_rels/slide9.xml.rels PK X-\qppt/notesSlides/notesSlide9.xml 9PK X-\1*ppt/notesSlides/_rels/notesSlide9.xml.rels PK X-\eCppt/slides/slide10.xml INVESTIGATIONS: IMAGING STUDIES CT Abdomen & PelvisFIRST-LINEWith IV & oral contrastLocate associated collectionsAssess fistula origin & courseDetect distal obstructionGuide percutaneous drainage💡 Best initial imaging for all suspected ECF FistulographyDEFINITIVEWater-soluble contrast injectionDelineate complex multi-track fistulasIdentify enteric communicationPre-operative road-mappingAssess healing progress💡 Gold standard for tract anatomy Small Bowel Follow-ThroughADJUNCTBarium / water-solubleAssess intestinal continuityDetect downstream strictureDocument bowel lengthIBD activity assessment💡 Avoid barium if peritonitis risk MRI Abdomen/PelvisSELECTEDSoft tissue detailPelvic/perianal fistulasPost-radiation assessmentSoft tissue characterisationPre-operative planning💡 Avoids radiation; limited in acute settingPK X-\Ѳ!ppt/slides/_rels/slide10.xml.rels PK X-\O ppt/notesSlides/notesSlide10.xml 10PK X-\T+ppt/notesSlides/_rels/notesSlide10.xml.rels PK X-\~__ppt/slides/slide11.xml FISTULOGRAPHY, ENDOSCOPY & SPECIAL TESTS Fistulography (Sinogram)Catheter inserted gently into external openingWater-soluble contrast (Gastrografin) injected under fluoroscopic guidanceIdentifies: tract length, course, depth, side branchesDemonstrates communication with bowel lumenAssesses healing on follow-up studiesCan be combined with CT for 3D reconstruction Endoscopy (OGD / Colonoscopy)Identifies intraluminal pathology at fistula originBiopsies: confirm malignancy, IBD, or ischaemiaDetects anastomotic dehiscence / strictureDistal obstruction evaluation (critical for closure)ERCP if biliary fistula suspectedTherapeutic: endoscopic clips, fibrin glue injection Methylene Blue TestOral MB → observe for blue drainage at fistula opening. Simple bedside confirmation of GI communication. Nuclear MedicineLabelled WBC scan for occult sepsis. Helpful when CT inconclusive for collection localisation. UltrasoundIdentifies superficial abscesses, guides drainage. Limited in deep or complex fistulas. Biopsy / HistologyEssential when malignancy or Crohn's suspected. Guides definitive oncological or medical management.PK X-\;!ppt/slides/_rels/slide11.xml.rels PK X-\s6ӑ ppt/notesSlides/notesSlide11.xml 11PK X-\O+ppt/notesSlides/_rels/notesSlide11.xml.rels PK X-\bkp{{ppt/slides/slide12.xml MEDICAL MANAGEMENT Fluid & Electrolyte ReplacementIV fluid resuscitation: normal saline / Hartmann'sReplace Na⁺, K⁺, Mg²⁺, phosphate, zincMonitor urine output, daily weightsHigh-output ECF: aggressive replacement critical Sepsis ManagementBlood cultures → broad-spectrum IV antibioticsPercutaneous CT-guided drainage of abscessesSurgical source control if drainage insufficientAntifungals if prolonged illness or immunosuppression Output ReductionNil by mouth / bowel rest: reduces fistula outputOctreotide / Somatostatin: ↓ GI secretions by 50%Proton pump inhibitors: reduce gastric acid secretionAnti-motility agents: loperamide (low-output only) Wound & Skin CareFistula effluent collection device / pouchBarrier creams / hydrocolloid dressingsVacuum-Assisted Closure (VAC): selected casesStomal therapist involvement: essential Disease-Specific TherapyCrohn's: anti-TNF (infliximab), immunosuppressantsRadiation: hyperbaric oxygen (adjunct)Malignancy: oncology referral, palliative approachReview / stop NSAIDs, steroids if possible Monitoring & TargetsDaily fistula output measurement & chartingWeekly: albumin, FBC, electrolytes, CRPNutritional targets: albumin > 3.0 g/dLAssess fistula healing response at 4–6 weeksPK X-\c!ppt/slides/_rels/slide12.xml.rels PK X-\*)@ ppt/notesSlides/notesSlide12.xml 12PK X-\Fb+ppt/notesSlides/_rels/notesSlide12.xml.rels PK X-\\yyppt/slides/slide13.xml NUTRITIONAL SUPPORT IN ECF Choosing the Nutritional Route❓ Is the gut functional & accessible?YES: → Enteral Nutrition (EN)NO: → Total Parenteral Nutrition (TPN)❓ Is fistula output low-moderate (<500)?YES: → Oral diet if toleratedNO: → Bowel rest + TPN❓ Is fistula distal to feeding site?YES: → Nasojejunal / jejunostomy feedNO: → Reassess anatomy⚠ Key principle: 'Feed the patient, not the fistula' — enteral feeding is preferred even in high-output fistulas if bowel is accessible distal to opening TPN & Nutritional TargetsParameterTargetNoteEnergy25–35 kcal/kg/dayHigher in catabolic stateProtein1.5–2.0 g/kg/dayKey for wound healingGlucose< 180 mg/dLTight glycaemic controlGlutamine0.3–0.5 g/kg/dayMucosal trophic effectZinc15–25 mg/dayReplace losses in ECFTarget Albumin> 3.0 g/dLPredicts surgical outcomeOral supplementation (zinc, vitamins A, C, E) should accompany any nutritional regimen.PK X-\x!ppt/slides/_rels/slide13.xml.rels PK X-\Ї ppt/notesSlides/notesSlide13.xml 13PK X-\yv+ppt/notesSlides/_rels/notesSlide13.xml.rels PK X-\5jooppt/slides/slide14.xml SURGICAL MANAGEMENT⏱ Timing: Spontaneous closure typically within 4–6 weeks (25–40% of ECFs). If not closed by 3–6 months, surgical intervention is planned. Pre-Operative Prerequisites (SNAP Complete)Sepsis controlled (no active infection)Nutrition optimised (albumin > 3.0 g/dL)Anatomy delineated (CT + fistulogram)Patient on optimal medical therapyMinimum 3–6 months conservative treatment Indications for SurgeryFailure to close after 3–6 monthsDistal bowel obstruction (mandates surgery)Malignancy at fistula siteRadiation-induced ECF (poor spontaneous closure)Enteroatmospheric fistulaPatient preference / quality of lifeOperative Sequence 1AdhesiolysisTake down all adhesions; anticipate prolonged dissection in re-operative fields 2Fistula ResectionEn-bloc excision of fistula tract and involved bowel segment 3AnastomosisPrimary resection & anastomosis if well-nourished; diversion if hostile abdomen 4Abdominal ClosureComponent separation if large defect; biological mesh in contaminated fieldsPK X-\O!ppt/slides/_rels/slide14.xml.rels PK X-\0 ppt/notesSlides/notesSlide14.xml 14PK X-\?ݤ+ppt/notesSlides/_rels/notesSlide14.xml.rels PK X-\?yccppt/slides/slide15.xml PROGNOSIS & KEY TAKEAWAYS75–85%Post-operative originMost ECFs are iatrogenic25–40%Spontaneous closure rateWithin 4–6 weeks conservative Rx~75%Deaths due to sepsisPrimary cause of mortality3–6Months before surgeryMinimum conservative trial1Most ECFs are post-operative; early recognition on Day 5–10 is critical.2Apply the SNAP framework (Sepsis → Nutrition → Anatomy → Procedure) before any surgical intervention.3CT abdomen with contrast is the first-line investigation; fistulography defines anatomy.4Nutritional optimisation (albumin > 3.0 g/dL) is mandatory before surgery.5FRIEND mnemonic identifies reasons for failure to close: Foreign body, Radiation, Infection, Epithelialization, Neoplasm, Distal obstruction.6Surgery (resection + anastomosis) is reserved for failures after 3–6 months conservative management.Fecal Fistula & Enterocutaneous Fistulas · Surgical Education Series · For Academic Use OnlyPK X-\*R!ppt/slides/_rels/slide15.xml.rels PK X-\Qz ppt/notesSlides/notesSlide15.xml 15PK X-\$Q+ppt/notesSlides/_rels/notesSlide15.xml.rels PK X-\K !ppt/slideMasters/slideMaster1.xml PK X-\N),ppt/slideMasters/_rels/slideMaster1.xml.rels PK X-\6TT!ppt/notesMasters/notesMaster1.xml 7/23/19Click to edit Master text stylesSecond levelThird levelFourth levelFifth level‹#›PK X-\s **,ppt/notesMasters/_rels/notesMaster1.xml.rels PK X-\_rels/PK X-\ $docProps/PK X-\Kppt/PK X-\ mppt/_rels/PK X-\ ppt/charts/PK X-\ppt/charts/_rels/PK X-\ppt/embeddings/PK X-\ ppt/media/PK X-\Bppt/slideLayouts/PK X-\qppt/slideLayouts/_rels/PK X-\ppt/slideMasters/PK X-\ppt/slideMasters/_rels/PK X-\  ppt/slides/PK X-\3ppt/slides/_rels/PK X-\ bppt/theme/PK X-\ppt/notesMasters/PK X-\ppt/notesMasters/_rels/PK X-\ppt/notesSlides/PK X-\ppt/notesSlides/_rels/PK X-\` P[Content_Types].xmlPK X-\]] T$_rels/.relsPK X-\00nppt/viewProps.xmlPK X-\H7t!Xrppt/slideLayouts/slideLayout1.xmlPK X-\ђ77,Fuppt/slideLayouts/_rels/slideLayout1.xml.relsPK X-\Evppt/slides/slide1.xmlPK X-\3 ppt/slides/_rels/slide1.xml.relsPK X-\.ppt/notesSlides/notesSlide1.xmlPK X-\:A*ppt/notesSlides/_rels/notesSlide1.xml.relsPK X-\[kQQppt/slides/slide2.xmlPK X-\2- Hppt/slides/_rels/slide2.xml.relsPK X-\Tppt/notesSlides/notesSlide2.xmlPK X-\xշ*!ppt/notesSlides/_rels/notesSlide2.xml.relsPK X-\nFF4ppt/slides/slide3.xmlPK X-\W/ C?ppt/slides/_rels/slide3.xml.relsPK X-\K |ŐOAppt/notesSlides/notesSlide3.xmlPK X-\9 Y*Hppt/notesSlides/_rels/notesSlide3.xml.relsPK X-\2=PbPb/Jppt/slides/slide4.xmlPK X-\` ppt/slides/_rels/slide4.xml.relsPK X-\vsppt/notesSlides/notesSlide4.xmlPK X-\J *ppt/notesSlides/_rels/notesSlide4.xml.relsPK X-\pssppt/slides/slide5.xmlPK X-\5 *ppt/slides/_rels/slide5.xml.relsPK X-\W8,ppt/notesSlides/notesSlide5.xmlPK X-\Qe*3ppt/notesSlides/_rels/notesSlide5.xml.relsPK X-\Q O O5ppt/slides/slide6.xmlPK X-\ج+ ppt/slides/_rels/slide6.xml.relsPK X-\zppt/notesSlides/notesSlide6.xmlPK X-\=|*ppt/notesSlides/_rels/notesSlide6.xml.relsPK X-\ /PEaEappt/slides/slide7.xmlPK X-\F vppt/slides/_rels/slide7.xml.relsPK X-\)lppt/notesSlides/notesSlide7.xmlPK X-\|g*Oppt/notesSlides/_rels/notesSlide7.xml.relsPK X-\mnUUbppt/slides/slide8.xmlPK X-\6 Qppt/slides/_rels/slide8.xml.relsPK X-\iސSppt/notesSlides/notesSlide8.xmlPK X-\pO*~Zppt/notesSlides/_rels/notesSlide8.xml.relsPK X-\hf={={\ppt/slides/slide9.xmlPK X-\>$ ppt/slides/_rels/slide9.xml.relsPK X-\q ppt/notesSlides/notesSlide9.xmlPK X-\1*ppt/notesSlides/_rels/notesSlide9.xml.relsPK X-\eCppt/slides/slide10.xmlPK X-\Ѳ!bppt/slides/_rels/slide10.xml.relsPK X-\O dppt/notesSlides/notesSlide10.xmlPK X-\T+kppt/notesSlides/_rels/notesSlide10.xml.relsPK X-\~__mppt/slides/slide11.xmlPK X-\;!ppt/slides/_rels/slide11.xml.relsPK X-\s6ӑ ppt/notesSlides/notesSlide11.xmlPK X-\O+ppt/notesSlides/_rels/notesSlide11.xml.relsPK X-\bkp{{ppt/slides/slide12.xmlPK X-\c!Tppt/slides/_rels/slide12.xml.relsPK X-\*)@ Wppt/notesSlides/notesSlide12.xmlPK X-\Fb+]ppt/notesSlides/_rels/notesSlide12.xml.relsPK X-\\yy_ppt/slides/slide13.xmlPK X-\x!ppt/slides/_rels/slide13.xml.relsPK X-\Ї ppt/notesSlides/notesSlide13.xmlPK X-\yv+ppt/notesSlides/_rels/notesSlide13.xml.relsPK X-\5jooppt/slides/slide14.xmlPK X-\O!Tppt/slides/_rels/slide14.xml.relsPK X-\0 Vppt/notesSlides/notesSlide14.xmlPK X-\?ݤ+]ppt/notesSlides/_rels/notesSlide14.xml.relsPK X-\?ycc_ppt/slides/slide15.xmlPK X-\*R!ppt/slides/_rels/slide15.xml.relsPK X-\Qz ppt/notesSlides/notesSlide15.xmlPK X-\$Q+ppt/notesSlides/_rels/notesSlide15.xml.relsPK X-\K !ppt/slideMasters/slideMaster1.xmlPK X-\N),ppt/slideMasters/_rels/slideMaster1.xml.relsPK X-\6TT!ppt/notesMasters/notesMaster1.xmlPK X-\s **,[ ppt/notesMasters/_rels/notesMaster1.xml.relsPK__D