11.1 Upper and Lower Gastrointestinal Hemorrhage
Key Takeaways
Use the pre-endoscopic Glasgow-Blatchford Score to identify very-low-risk patients (GBS 0–1) who may receive outpatient follow-up. Higher scores support hospital assessment; hemodynamics, ongoing bleeding and comorbidity determine monitoring level. The post-endoscopy Rockall score estimates rebleeding and mortality risk.
Restrictive red blood cell transfusion targeting hemoglobin 7.0–9.0 g/dL (transfusion trigger Hb < 7.0 g/dL) significantly reduces portal pressures, rebleeding, and mortality compared to liberal transfusion, except in active acute coronary syndrome (target Hb >= 8.0 g/dL).
Non-variceal upper GI bleeding requires high-dose IV proton pump inhibitor therapy (pantoprazole 80 mg bolus + 8 mg/hr infusion) to maintain intragastric pH > 6.0 and pre-endoscopic erythromycin (250 mg IV) to optimize gastric visualization.
Acute variceal hemorrhage mandates immediate splanchnic vasoactive therapy (octreotide 50 mcg bolus + 50 mcg/hr infusion for 2–5 days) and prophylactic IV ceftriaxone (1 g daily for 7 days) initiated prior to emergent diagnostic endoscopy.
Balloon tamponade tubes (Sengstaken-Blakemore and Minnesota) serve exclusively as temporary salvage bridges (< 24 hours) for refractory exsanguination; endotracheal intubation is mandatory, and surgical scissors must remain at the bedside at all times.
11.1 Upper and Lower Gastrointestinal Hemorrhage
Clinical Scenario: A 56-year-old male with alcohol-induced cirrhosis presents with large-volume hematemesis and melena. On arrival, he is somnolent. Vital signs: BP 82/46 mmHg, HR 124 bpm, RR 24 bpm, SpO2 93% on room air. Exam reveals caput medusae, spider angiomas, and active bleeding in the oropharynx. Labs demonstrate Hb 6.4 g/dL, platelets 48,000/mm³, INR 2.1, and BUN 46 mg/dL with Cr 1.1 mg/dL.
Etiology & Clinical Differentiation
Gastrointestinal hemorrhage is classified by anatomical relation to the ligament of Treitz:
- Upper GI Bleeding (UGIB): Proximal to the ligament of Treitz. Manifests as hematemesis ("coffee-ground" or bright red) and melena. Etiologies: peptic ulcer disease (PUD, ~50%), gastroesophageal varices (15–20%), Mallory-Weiss tears (5–10%), and Dieulafoy lesions.
- Lower GI Bleeding (LGIB): Distal to the ligament of Treitz. Manifests as hematochezia. Etiologies: diverticulosis (~40%), angiodysplasia (15%), ischemic colitis, and hemorrhoids.
- Clinical Trap: Massive, brisk UGIB with hypermotility can present as hematochezia with hemodynamic instability. A BUN-to-creatinine ratio >= 30:1 strongly indicates an upper source due to luminal blood protein digestion and absorption.
Risk Stratification Systems
| Scoring System | Timing & Variables | Thresholds | Clinical Application |
|---|---|---|---|
| Glasgow-Blatchford Score (GBS) | Pre-endoscopy: BUN, Hb, systolic BP, pulse, melena, syncope, liver/heart disease | Score 0–1: Low risk; Score >= 6: High risk (>50% need intervention) | GBS 0–1 may permit outpatient follow-up; higher scores require clinical assessment for admission and intervention. ICU/stepdown care depends on instability, ongoing bleeding and comorbidity, not a score cutoff alone. |
| Rockall Score | Pre- and post-endoscopy: Age, shock, comorbidities, endoscopic findings, stigmata | Score < 3: Low mortality; Score >= 8: High mortality (>40%) | Stratifies rebleeding risk and mortality post-endoscopy. |
Resuscitation & Restrictive Transfusion
- Airway Protection: Immediate endotracheal intubation is required for massive active hematemesis, encephalopathy (GCS <= 8), or severe agitation to prevent aspiration and facilitate endoscopy.
- Vascular Access: Establish two 16- or 18-gauge peripheral IVs or a rapid infuser catheter. Resuscitate with balanced crystalloid (Lactated Ringer's) in titrated 250–500 mL aliquots. Over-resuscitation raises portal venous pressure and precipitates rebound variceal hemorrhage.
- Restrictive Blood Transfusion: Grounded in landmark trials (Villanueva et al.), adopt a restrictive transfusion threshold:
- Transfuse packed red blood cells (PRBCs) when hemoglobin falls below 7.0 g/dL, targeting 7.0–9.0 g/dL.
- Liberal transfusion (target Hb > 9.0 g/dL) increases portal hydrostatic pressure, disrupts clot formation, and increases 45-day mortality.
- ACS Exception: Maintain hemoglobin >= 8.0 g/dL in active acute coronary syndrome or ongoing myocardial ischemia.
- Coagulopathy: Routine FFP administration to correct INR in cirrhosis is not recommended; it expands volume and worsens portal hypertension without correcting the balanced re-equilibrated coagulopathy. Transfuse platelets only for active bleeding with counts < 50,000/mm³.
Pharmacotherapy: Variceal vs Non-Variceal Bleeding
Initiate targeted medical therapy immediately upon presentation prior to endoscopy:
Variceal Hemorrhage
- Octreotide: Synthetic somatostatin analog. Administer 50 mcg IV bolus followed by 50 mcg/hr continuous IV infusion for 2 to 5 days. Octreotide selectively inhibits glucagon and VIP, producing splanchnic arterial vasoconstriction that decreases portal inflow and portal pressures.
- Ceftriaxone: 1 g IV every 24 hours for 7 days. Early antibiotic prophylaxis reduces bacterial translocation, spontaneous bacterial peritonitis (SBP), bacteremia, rebleeding, and hospital mortality.
Non-Variceal Hemorrhage (Peptic Ulcer Disease)
- Proton Pump Inhibitor (PPI): Administer pantoprazole 80 mg IV bolus followed by 8 mg/hr continuous infusion for 72 hours (or 40–80 mg IV BID). Maintaining intragastric pH > 6.0 stabilizes fibrin clot formation and prevents pepsin-mediated clot lysis.
- Erythromycin: 250 mg IV infusion 30 to 60 minutes prior to endoscopy. This motilin receptor agonist stimulates coordinated gastric emptying, clearing blood clots to optimize mucosal visualization.
Endoscopic Interventions & Timing
Upper endoscopy should occur within 24 hours of presentation following hemodynamic stabilization:
- Variceal Hemorrhage: Endoscopic variceal ligation (EVL, "banding") is first-line for esophageal varices. Cyanoacrylate tissue adhesive is preferred for isolated gastric fundal varices.
- Peptic Ulcer Hemorrhage: High-risk stigmata (active spurting, oozing or a nonbleeding visible vessel) require endoscopic hemostasis using an effective mechanical or thermal modality. If epinephrine injection is used, add definitive clip or thermal therapy; epinephrine alone is inadequate.
Salvage Tamponade & Rescue TIPS
Warning
Balloon Tamponade Safety Rules: Balloon tamponade (Sengstaken-Blakemore or Minnesota tube) is strictly a temporary bridge (< 24 hours) for refractory exsanguination:
- Mandatory Intubation: Endotracheal intubation must precede tube insertion to prevent fatal aspiration and airway occlusion.
- Bedside Scissors: Surgical scissors must remain taped to the head of the bed at all times. If acute respiratory distress occurs, immediately transect all lumens to instantly deflate balloons and extubate the tube.
- Device-Specific Inflation: Follow the exact tube model’s instructions for gastric-balloon volume; do not apply one volume to both Minnesota and Sengstaken-Blakemore tubes. Confirm intragastric placement radiographically before full inflation and traction. Use a manometer for the esophageal balloon, typically 30–45 mmHg, within that device’s instructions. Follow the device-specific schedule for pressure checks and periodic deflation. Remove tamponade as soon as definitive hemostasis is available; never exceed 24 hours total because of esophageal necrosis and rupture risk.
- Early Preemptive TIPS: Transjugular Intrahepatic Portosystemic Shunt within 24 to 72 hours is indicated in high-risk patients (Child-Pugh C score 10–13, or Child-Pugh B > 7 with active bleeding on endoscopy) to reduce treatment failure and mortality.
- Rescue TIPS: Indicated for refractory hemorrhage failing combination medical and endoscopic therapy.
Lower Gastrointestinal Hemorrhage Workup
Most LGIB resolves spontaneously (80–85%). In brisk hematochezia:
- Consider an Upper Source: Brisk hematochezia with instability can arise from UGIB. Use the clinical presentation to determine the need for urgent upper endoscopy after resuscitation; a negative or nondiagnostic nasogastric aspirate does not exclude an upper source.
- CT Angiography (CTA): Use CTA for ongoing hemodynamically significant bleeding, particularly if instability persists after resuscitation. Active extravasation localizes a target for prompt angiography/embolization.
- Catheter Angiography: Superselective transcatheter arterial embolization (TAE) is first-line for persistent bleeding in unstable patients.
- Colonoscopy: Perform nonemergent inpatient colonoscopy after stabilization and adequate bowel preparation; routine completion within 24 hours has not improved major outcomes. Use it for definitive mechanical or thermal hemostasis; epinephrine injection, if used, requires an additional hemostatic modality.
A 52-year-old male with alcoholic cirrhosis presents with massive hematemesis. His blood pressure is 86/50 mmHg, heart rate is 122 beats/min, hemoglobin is 6.8 g/dL, platelet count is 62,000/mm³, and INR is 1.9. Resuscitation is initiated. What is the evidence-based resuscitation and initial medical management strategy prior to emergent endoscopy?
Transfuse 4 units of uncrossmatched PRBCs targeting hemoglobin > 10 g/dL, administer 4 units of FFP for INR reversal, and hold antibiotics
Transfuse PRBCs targeting hemoglobin 7.0–9.0 g/dL, initiate IV octreotide bolus and infusion, and administer IV ceftriaxone 1 g
Administer 3 liters of normal saline bolus, initiate vasopressin without nitroglycerin, and avoid blood transfusion until hemoglobin falls below 5.0 g/dL
Administer IV pantoprazole bolus and infusion only, reserving octreotide and antibiotics until varices are visualized on endoscopy
A 49-year-old male with refractory esophageal variceal bleeding fails endoscopic band ligation and continues to have massive hematemesis with hemorrhagic shock. The acute care team decides to place a Minnesota balloon tamponade tube as a salvage bridge to emergency TIPS. What safety and procedural standard is mandatory during this intervention?
The esophageal balloon should be inflated first to 60 mmHg to compress bleeding proximal varices before inflating the gastric balloon
Endotracheal intubation can be deferred if the patient maintains an intact gag reflex and obeys verbal commands
The tube should remain fully inflated continuously for at least 72 to 96 hours to allow permanent variceal thrombosis
Endotracheal intubation must precede tube insertion, surgical scissors must be kept at the bedside, and balloon inflation should not exceed 24 hours
A 68-year-old female presents to the emergency department with black tarry stools for two days. She is hemodynamically stable: blood pressure 118/72 mmHg, heart rate 78 beats/min. Laboratory evaluation reveals BUN 38 mg/dL, creatinine 0.9 mg/dL, and hemoglobin 10.2 g/dL. The acute care nurse practitioner calculates a Glasgow-Blatchford Score (GBS) of 6 (BUN 4, female hemoglobin 1 and melena 1). Which interpretation and management plan is most appropriate?
The Glasgow-Blatchford Score indicates a high risk for requiring clinical intervention; admit the patient to an inpatient telemetry unit for high-dose IV PPI therapy and endoscopy within 24 hours
A score of 6 confirms low risk, allowing immediate discharge home with an outpatient oral proton pump inhibitor and elective colonoscopy in 4 weeks
The Glasgow-Blatchford score is only validated post-endoscopy; the patient requires emergent exploratory laparotomy without preceding endoscopic evaluation
A score of 6 indicates active variceal exsanguination requiring immediate placement of a Sengstaken-Blakemore tube and emergent portal decompression
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