🔥 Diverticular Bleeding Simulator

Diverticulum Formation and Vasa Recta Erosion

Placeholder: weakened bowel wall herniates and exposes a penetrating artery.

• Right colon: Common site (Placeholder short note)
• Vasa recta: Vessel involved (Placeholder short note)
• ~50% by age 60: Prevalence (Placeholder short note)
• Wall thinning: Trigger (Placeholder short note)

Vessel erosion mechanism

Placeholder: chronic mechanical stress thins the vessel wall at the dome.

Painless Hematochezia as Presenting Symptom

Placeholder: painless, sudden, large-volume rectal bleeding is typical.

• Sudden: Onset (Placeholder short note)
• Usually absent: Pain (Placeholder short note)
• Maroon/red: Color (Placeholder short note)
• ~75-80%: Self-limited (Placeholder short note)

Clinical presentation

Placeholder: bleeding is often brisk but frequently stops spontaneously.

Colonoscopic Localization and Clip/Cautery Hemostasis

Placeholder: urgent colonoscopy locates the source and applies hemoclips.

• Clip / cautery: Method (Placeholder short note)
• High acute: Success rate (Placeholder short note)
• Within 24h: Timing (Placeholder short note)
• Rapid purge: Prep needed (Placeholder short note)

Endoscopic hemostasis technique

Placeholder: clips or thermal probes are applied directly to the bleeding vessel.

Angiographic Super-Selective Embolization

Placeholder: interventional radiology embolizes the feeding artery when endoscopy fails.

• Femoral artery: Access (Placeholder short note)
• Vasa recta: Target (Placeholder short note)
• Microcoils: Agent (Placeholder short note)
• Low, selective: Ischemia risk (Placeholder short note)

Embolization procedure

Placeholder: a microcatheter is advanced super-selectively before coil deployment.

Rebleeding Risk and Post-Procedure Monitoring

Placeholder: recurrence is tracked with labs, vitals, and scheduled follow-up.

• ~15-40%: Rebleed rate (Placeholder short note)
• Hgb trend: Monitoring (Placeholder short note)
• Colonoscopy: Follow-up (Placeholder short note)
• Fiber, risk mgmt: Prevention (Placeholder short note)

Monitoring and recurrence

Placeholder: serial hemoglobin and vitals guide discharge readiness.

Placeholder highlight: recurrent bleeding may prompt elective resection.