Gastroenterology · Gastrointestinal Hemorrhage
The facts most likely to be tested
Hematemesis or coffee-ground emesis indicates a source proximal to the ligament of Treitz.
Melena is the most common presentation of an upper GI bleed and typically suggests a source in the esophagus, stomach, or duodenum.
EGD (esophagogastroduodenoscopy) is the gold standard for both the diagnostic evaluation and therapeutic intervention of an upper GI bleed.
Intravenous proton pump inhibitors (PPIs) are indicated immediately upon suspicion of an upper GI bleed to stabilize clot formation by increasing gastric pH.
Octreotide is the first-line pharmacologic therapy for patients with suspected variceal hemorrhage due to portal hypertension.
Prophylactic antibiotics (typically ceftriaxone) are mandatory in patients with cirrhosis and gastrointestinal bleeding to prevent spontaneous bacterial peritonitis.
Nasogastric lavage is reserved for patients with diagnostic uncertainty to differentiate between upper and lower GI sources when the clinical picture is unclear.
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A 54-year-old male with a history of alcohol use disorder and cirrhosis presents to the emergency department after two episodes of hematemesis. Physical examination reveals scleral icterus, palmar erythema, and ascites. His blood pressure is 98/60 mmHg and heart rate is 112/min. Laboratory studies show a hemoglobin of 7.2 g/dL and an elevated INR of 1.8.
What is the most appropriate next step in the management of this patient?
Intravenous octreotide and prophylactic ceftriaxone
This patient presents with signs of variceal hemorrhage secondary to cirrhosis; the most critical initial steps are hemodynamic stabilization, octreotide to reduce portal pressure, and prophylactic antibiotics to prevent infection.
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Etiology / Epidemiology
Most common cause is peptic ulcer disease; other major risks include NSAID use, alcoholism, and portal hypertension.
Clinical Manifestations
Presents with hematemesis or coffee-ground emesis; melena suggests proximal source; hemodynamic instability indicates massive loss.
Diagnosis
Upper endoscopy (EGD) is the gold standard for both diagnosis and therapeutic intervention.
Treatment
Stabilize with IV fluids and IV PPI; perform EGD within 24 hours; avoid nasogastric lavage in stable patients.
Prognosis
Mortality risk assessed by Rockall score; rebleeding is the most common major complication.
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Epidemiology & Etiology
Peptic ulcer disease accounts for 50% of cases, followed by esophageal varices and Mallory-Weiss tears. Chronic NSAID use and H. pylori infection are the primary modifiable risk factors. Patients with cirrhosis are at high risk for variceal hemorrhage.
Pertinent Anatomy
The ligament of Treitz anatomically divides the upper GI tract (esophagus, stomach, duodenum) from the lower GI tract. Bleeding proximal to this point typically presents as melena due to blood digestion.
Pathophysiology
Erosion of the gastric or duodenal mucosa exposes submucosal vessels to acid-pepsin digestion. In variceal bleeding, portal hypertension leads to collateral vessel dilation in the distal esophagus, which are prone to rupture. Massive hemorrhage leads to hypovolemic shock and decreased end-organ perfusion.
Clinical Manifestations
Patients present with hematemesis (bright red) or coffee-ground emesis (oxidized). Melena (black, tarry stool) is highly suggestive of an upper source. Orthostatic hypotension and tachycardia are red flags for >15% blood volume loss.
Diagnosis
Upper endoscopy (EGD) is the diagnostic test of choice. It allows for direct visualization and hemostatic therapy (clips, cautery, or epinephrine injection). Labs should include Type and Cross for blood products and CBC to assess for anemia.
Treatment
Initial management requires two large-bore IVs and IV PPI (e.g., pantoprazole) to stabilize clot formation. If variceal bleed is suspected, initiate octreotide and prophylactic ceftriaxone. Do not delay endoscopy for non-emergent imaging. Transfuse if hemoglobin <7 g/dL.
Prognosis
The Rockall score predicts mortality and rebleeding risk. Rebleeding occurs in 10-20% of patients, usually within the first 48 hours. Close monitoring of vital signs and serial hemoglobin checks are mandatory.
Differential Diagnosis
Peptic Ulcer Disease: Epigastric pain relieved by food
Esophageal Varices: History of cirrhosis/portal hypertension
Mallory-Weiss Tear: Forceful retching/vomiting prior to hematemesis
Dieulafoy Lesion: Large, tortuous submucosal artery
Aortoenteric Fistula: History of abdominal aortic aneurysm repair