What is the investigation of choice for a patient presenting with upper gastrointestinal bleed and melena?

Upper GI Bleed aur Melena ki Investigation

Upper gastrointestinal bleeding aur melena ke liye gastroscopy (esophagogastroduodenoscopy/EGD) pehli aur sabse zaroori investigation hai, jo hemodynamically stable patients mein 24 hours ke andar karni chahiye. 1

Hemodynamic Status ke Mutabiq Investigation Strategy

Stable Patient (Blood Pressure Normal, Shock Index <1)

• Gastroscopy/EGD ko first-line investigation ke taur par use karein 1
• Yeh diagnostic aur therapeutic dono purposes ke liye best hai
• 24 hours ke andar perform karni chahiye initial resuscitation ke baad 2, 3
• Nasogastric tube lagana routine mein zaruri nahi - yeh diagnosis mein madad nahi karta aur ek-third patients mein complications hoti hain 1

Unstable Patient (Shock Index ≥1, Hemodynamic Instability)

• Pehle CTA (CT Angiography) abdomen and pelvis karein 1

• CTA unstable patients mein colonoscopy se behtar hai kyunki:

  • Upper GI tract aur small bowel dono mein bleeding source identify kar sakta hai
  • Widely available hai aur jaldi ho sakta hai
  • Bowel preparation ki zarurat nahi
  • 0.3 mL/min tak slow bleeding detect kar sakta hai 4
  • Pooled sensitivity 85% hai acute GI bleeding mein 4

• Agar CTA par koi source nahi mila, to turant upper endoscopy karein 1

Important Clinical Pearls

Upper GI Source ke Suggestive Features:

• Brisk rectal bleeding with hemodynamic compromise
• Past history of peptic ulcer disease
• Portal hypertension ki history
• Elevated blood urea/creatinine ratio
• Antiplatelet drugs ka use 1

Risk Stratification:

Glasgow-Blatchford Score use karein initial assessment ke liye 5, 2, 3:

• Score 0-1: Very low risk - outpatient management possible
• Higher scores: Hospital admission aur urgent endoscopy

Pre-Endoscopy Management:

• Erythromycin infusion dein endoscopy se pehle - yeh gastric emptying improve karta hai aur diagnostic yield badhata hai 2
• High-dose PPI (proton pump inhibitor) shuru karein presentation par hi 2, 3
• Blood transfusion threshold: Hemoglobin <7 g/dL 2, 3

Agar Pehli Investigation Negative Ho

Gastroscopy Negative Hone Par:

1. CTA abdomen and pelvis with contrast - agar active bleeding continue hai 4
2. Arteriography/Angiography - agar endoscopy fail ho ya continued bleeding ho 4, 6
   • Active hemorrhage mein accuracy zyada hai
   • Therapeutic embolization bhi possible hai

Obscure GI Bleeding (Sab Tests Negative):

• Video Capsule Endoscopy (VCE) next step hai 1
• 48 hours ke andar karein to diagnostic yield 87-91% tak ho sakti hai 1
• 3 days ke baad yield <50% gir jati hai 1

Common Pitfalls se Bachein

1. Nasogastric tube routine mein mat lagaein - outcomes improve nahi hote aur complications zyada hain 1

2. Barium studies ka koi role nahi acute UGIB mein - yeh subsequent endoscopy aur angiography mein interference karta hai 4

3. Nuclear medicine scans (Tc-99m RBC scan) first-line nahi hain - poor positive predictive value aur emergency mein rarely available 4

4. CTA ke liye oral contrast mat dein - yeh examination ko nondiagnostic bana deta hai 6

5. Unstable patients mein colonoscopy se pehle CTA karein - kyunki bleeding upper GI ya small bowel se bhi ho sakti hai 1

Bottom line: Stable patients mein gastroscopy within 24 hours, unstable patients mein pehle CTA phir gastroscopy agar source nahi mila. 1