Neutropenic Enterocolitis (Typhlitis) Management

Algorithm Steps

1. ▶

   Start

   Suspected Neutropenic Enterocolitis

   Abdominal symptoms in neutropenic patient

   1. ●

      Action

      Recognize Clinical Triad

      Classic presentation

      • 1. NEUTROPENIA: ANC <500/μL
      • (often profound <100)
      • 2. FEVER: Temperature ≥38°C
      • 3. ABDOMINAL PAIN:
      • • Right lower quadrant (cecum)
      • • May be diffuse
      • • Cramping, tenderness, distension
      • OTHER: Diarrhea (often bloody), nausea/vomiting
      1. ●

         Action

         Identify Risk Factors

         Who develops typhlitis

         • HIGH RISK:
         • • AML induction chemotherapy
         • • High-dose cytarabine
         • • Taxanes (docetaxel, paclitaxel)
         • • HSCT conditioning
         • • Aplastic anemia treatment
         • TIMING: Usually during nadir (7-14 days post-chemo)
         • Incidence: 5-10% in hematologic malignancy
         1. ●

            Action

            Obtain CT Abdomen/Pelvis

            Imaging is key to diagnosis

            • CT WITH IV CONTRAST (if renal function allows)
            • DIAGNOSTIC FINDINGS:
            • • Bowel wall thickening ≥4mm
            • • Most common: cecum, ascending colon, terminal ileum
            • • Pericolonic fat stranding
            • • Intramural gas (pneumatosis - severe)
            • • Ascites
            • RULE OUT: Perforation, abscess, appendicitis
            1. ◆

               Decision

               Assess Severity

               Guides management approach

               • MILD-MODERATE:
               • • Bowel wall 4-10mm
               • • No perforation/abscess
               • • Hemodynamically stable
               • SEVERE:
               • • Bowel wall >10mm
               • • Pneumatosis intestinalis
               • • Perforation or abscess
               • • Septic shock
               • • Peritonitis
               1. ●

                  Action

                  Conservative Management

                  Most cases managed medically

                  • 1. NPO (bowel rest)
                  • 2. NG tube if significant distension/vomiting
                  • 3. IV fluids and electrolyte replacement
                  • 4. TPN if prolonged bowel rest expected
                  • 5. Broad-spectrum antibiotics:
                  • • Piperacillin-tazobactam 4.5g IV q6h OR
                  • • Meropenem 1g IV q8h
                  • • ADD Vancomycin if hemodynamically unstable
                  • • ADD Metronidazole for anaerobes
                  • 6. G-CSF to shorten neutropenia
                  1. ●

                     Action

                     Rule Out C. difficile

                     Common coexisting infection

                     • C. diff testing on stool (PCR or toxin)
                     • May coexist with typhlitis
                     • If positive: Add oral vancomycin 125mg QID
                     • Avoid antimotility agents
                     • Fidaxomicin alternative
                     1. ●

                        Action

                        Close Monitoring

                        Serial assessments

                        • Serial abdominal exams q4-6h
                        • Daily CBC, BMP, lactate
                        • Repeat CT if clinical deterioration
                        • Watch for: increasing distension, peritonitis, shock
                        • Most improve within 5-7 days as ANC recovers
                        1. ◆

                           Decision

                           Surgical Consultation Needed?

                           Indications for surgical intervention

                           • ABSOLUTE INDICATIONS:
                           • • Free perforation with peritonitis
                           • • Uncontrolled GI bleeding
                           • • Clinical deterioration despite medical therapy
                           • RELATIVE INDICATIONS:
                           • • Abscess requiring drainage
                           • • Persistent sepsis despite antibiotics
                           • • Bowel necrosis on imaging
                           • HIGH MORTALITY: Surgery in neutropenic patients ~50%
                           1. ●

                              Action

                              Surgical Intervention

                              When conservative management fails

                              • Right hemicolectomy most common
                              • Diverting ileostomy may be needed
                              • High morbidity/mortality in neutropenic patients
                              • Delay if possible until ANC recovering
                              • G-CSF perioperatively
                              1. ●

                                 Action

                                 Recovery & Diet Advancement

                                 As neutropenia resolves

                                 • Advance diet slowly as symptoms improve
                                 • Clear liquids → low residue → regular
                                 • Continue antibiotics until afebrile + ANC >500
                                 • Future chemotherapy: consider dose reduction
                                 • Recurrence possible with subsequent cycles
                                 1. ✓

                                    Outcome

                                    Typhlitis Resolved

                                    Plan for future chemotherapy cycles