A 57-year-old man is brought to the emergency department by his family because of several episodes of vomiting of blood in the past 24 hours. He has a history of alcoholic cirrhosis and is being treated for ascites with diuretics and for encephalopathy with lactulose. His vital signs include a temperature of 36.9°C (98.4°F), pulse of 85/min, and blood pressure of 80/52 mm Hg. On examination, he is confused and unable to give a complete history. He is noted to have jaundice, splenomegaly, and multiple spider angiomas over his chest. Which of the following is the best initial management of this patient?

Combined vasoactive and endoscopic therapy

Transjugular intrahepatic portosystemic shunt (TIPS)

A 72-year-old male with a past medical history significant for aortic stenosis and hypertension presents to the emergency department complaining of weakness for the past 3 weeks. He states that, apart from feeling weaker, he also has noted lightheadedness, pallor, and blood-streaked stools. The patient's vital signs are stable, and he is in no acute distress. Laboratory workup reveals that the patient is anemic. Fecal occult blood test is positive for bleeding. EGD was performed and did not reveal upper GI bleeding. Suspecting a lower GI bleed, a colonoscopy is performed after prepping the patient, and it is unremarkable. What would be an appropriate next step for localizing a lower GI bleed in this patient?

Technetium-99 labelled erythrocyte scintigraphy

A 62-year-old man is brought to the emergency department for the evaluation of intermittent bloody vomiting for the past 2 hours. He has had similar episodes during the last 6 months that usually stop spontaneously within an hour. The patient is not aware of any medical problems. He has smoked one pack of cigarettes daily for 30 years but quit 10 years ago. He drinks half a liter of vodka daily. He appears pale and diaphoretic. His temperature is 37.3°C (99.1°F), pulse is 100/min, respirations are 20/min, and blood pressure is 105/68 mm Hg. Cardiac examination shows no murmurs, rubs, or gallops. There is increased abdominal girth. On percussion of the abdomen, the fluid-air level shifts when the patient moves from the supine to the right lateral decubitus position. The edge of the liver is palpated 2 cm below the costal margin. His hemoglobin concentration is 10.3 g/dL, leukocyte count is 4,200/mm3, and platelet count is 124,000/mm3. Intravenous fluids and octreotide are started. Which of the following is the most appropriate next step in the management of this patient?

Transjugular intrahepatic portal shunt

Transfusion of packed red blood cells

A 22-year-old woman in the intensive care unit has had persistent oozing from the margins of wounds for 2 hours that is not controlled by pressure bandages. She was admitted to the hospital 13 hours ago following a high-speed motor vehicle collision. Initial focused assessment with sonography for trauma was negative. An x-ray survey showed opacification of the right lung field and fractures of multiple ribs, the tibia, fibula, calcaneus, right acetabulum, and bilateral pubic rami. Laboratory studies showed a hemoglobin concentration of 14.8 g/dL, leukocyte count of 10,300/mm3, platelet count of 175,000/mm3, and blood glucose concentration of 77 mg/dL. Infusion of 0.9% saline was begun. Multiple lacerations on the forehead and extremities were sutured, and fractures were stabilized. Repeat laboratory studies now show a hemoglobin concentration of 12.4 g/dL, platelet count of 102,000/mm3, prothrombin time of 26 seconds (INR=1.8), and activated partial thromboplastin time of 63 seconds. Which of the following is the next best step in management?

Transfuse packed RBC, fresh frozen plasma, and platelet concentrate in a 1:1:1 ratio

Transfuse packed RBC and fresh frozen plasma in a 1:1 ratio

Transfuse fresh frozen plasma and platelet concentrate in a 1:1 ratio

Transfuse whole blood and administer vitamin K

A 28-year-old male presents to his primary care physician with complaints of intermittent abdominal pain and alternating bouts of constipation and diarrhea. His medical chart is not significant for any past medical problems or prior surgeries. He is not prescribed any current medications. Which of the following questions would be the most useful next question in eliciting further history from this patient?

"Can you tell me more about the symptoms you have been experiencing?"

"Does the diarrhea typically precede the constipation, or vice-versa?"

"Is the diarrhea foul-smelling?"

"Please rate your abdominal pain on a scale of 1-10, with 10 being the worst pain of your life"

"Are the symptoms worse in the morning or at night?"

GI bleeding management for USMLE Step 3: High-Yield Management Lessons

Initial Rx - Stabilize First!

Vascular Access: IV, Venous Cutdown, and IO

ABCs: Assess & secure Airway, Breathing, Circulation. Intubate for altered mental status or hematemesis.
IV Access: Place 2 large-bore (≥18G) peripheral IV catheters for rapid infusion.
Resuscitation: Begin aggressive IV fluid resuscitation with crystalloids (NS or LR).
Transfusion Trigger: Transfuse packed RBCs (pRBCs) for Hemoglobin <7 g/dL.
Key Labs: Type & crossmatch, CBC, coagulation studies (PT/INR, PTT), LFTs, BUN/Cr.
Medication: Start a high-dose IV Proton Pump Inhibitor (PPI) drip (e.g., pantoprazole).

⭐ In patients with known Coronary Artery Disease (CAD), the transfusion threshold is higher; maintain Hb >9 g/dL to ensure adequate myocardial oxygen delivery.

Localize the Bleed - Up or Down?

Upper GI Bleed (UGIB): Proximal to Ligament of Treitz.
- Presentation: Hematemesis (vomiting blood/coffee grounds), melena (black, tarry stool).
- Key Lab: ↑ BUN/Cr ratio > 20.
Lower GI Bleed (LGIB): Distal to Ligament of Treitz.
- Presentation: Hematochezia (bright red blood per rectum).
- Melena can indicate a slow-bleed, right-sided LGIB.

⭐ A BUN/Cr ratio > 20 strongly suggests an upper GI source. This is due to the digestion of blood proteins in the upper gut, leading to increased urea absorption.

Upper GI Bleed - Variceal vs. Ulcer

Initial Steps (All UGIB): Assess ABCs. Secure 2 large-bore IVs. Transfuse if Hb <7 g/dL (or <9 in CAD). Start high-dose IV PPI. Consult GI for urgent endoscopy (<24h).
Variceal Bleed (from Portal HTN):
- Acute Rx: Octreotide (reduces splanchnic flow), prophylactic ceftriaxone, and endoscopic variceal ligation (banding).
- Refractory: Balloon tamponade (Sengstaken-Blakemore) or TIPS for persistent bleeding.
Peptic Ulcer Bleed (H. pylori/NSAIDs):
- Acute Rx: Endoscopic therapy (clips, thermal coagulation, epinephrine injection) combined with high-dose IV PPI.
- Test and treat for H. pylori after the acute bleed resolves.

⭐ In cirrhotic patients with variceal bleeding, prophylactic antibiotics (e.g., ceftriaxone) are crucial as they significantly reduce the risk of bacterial infections like SBP and improve overall survival.

Lower GI Bleed - Colon Carnage

Etiology: Common causes include diverticulosis, angiodysplasia, ischemic colitis, and malignancy.
- Diverticulosis: Most common cause of massive LGIB. Abrupt, painless, large-volume hematochezia. Usually stops spontaneously (>80%).
- Angiodysplasia: Dilated, tortuous submucosal vessels. Painless, recurrent, low-grade bleeding. Associated with CKD and aortic stenosis.
- Ischemic Colitis: "Watershed" areas (splenic flexure). Abdominal pain followed by bloody diarrhea, often post-hypotension.
Diagnosis & Management:
- Initial step: Hemodynamic resuscitation (ABCs, 2 large-bore IVs).
- Colonoscopy is the primary diagnostic and therapeutic tool.
- If bleeding is massive/obscures view: CTA or tagged RBC scan.
- Treatment: Endoscopic therapy (clipping, cautery), angiography with embolization, or surgery for refractory cases.

⭐ Heyde's Syndrome: A classic association between aortic stenosis and bleeding from angiodysplasia due to acquired von Willebrand factor deficiency.

High‑Yield Points - ⚡ Biggest Takeaways

Initial management requires two large-bore IV lines for resuscitation before any diagnostic steps.

For suspected variceal bleeding, immediately administer octreotide and prophylactic ceftriaxone.

All patients with upper GI bleeding should receive IV proton pump inhibitors (PPIs).

Endoscopy (EGD) is the cornerstone for both diagnosis and therapy in upper GI bleeds.

Transfuse packed RBCs for hemoglobin <7 g/dL in most patients (<9 g/dL in cardiovascular disease).

Colonoscopy is the procedure of choice for evaluating hemodynamically stable lower GI bleeds.

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