USMLE Step 3: Common Case-Specific Bundles
Prebuilt Mini-Order Sets for High-Yield Step 3 Scenarios
🚀 Key Strategy: These bundles save you time and guarantee you don't miss points on common CCS scenarios.
Initial Stabilization
O2 if hypoxic, IV access, monitor, pulse ox
Diagnostics
EKG, troponin × serial, CXR
Medical Management
Aspirin + nitrates + heparin + statin + beta-blocker (unless contraindicated)
Disposition
Cardiology consult, admit to CCU/telemetry
Initial Stabilization
O2, IV fluids (30 mL/kg bolus), monitor, pulse ox
Diagnostics
Blood cultures, UA/culture, CXR, lactate
Medical Management
Broad-spectrum IV antibiotics within 1 hour
Disposition
Admit ICU if unstable, add vasopressors if MAP <65
Initial Stabilization
O2, IV access, monitor
Fluid Management
IV fluids (NS → switch to D5½NS when glucose <200)
Medical Management
Insulin infusion, potassium protocol (replace if <5.3)
Monitoring & Disposition
BMP q2–4h, check phosphorus, admit ICU if AMS or severe
COPD / Asthma Exacerbation
Initial Stabilization
O2 (target 88–92% for COPD)
Medical Management
Nebulized albuterol/ipratropium, systemic steroids
Additional Considerations
+/- antibiotics if fever/sputum
Initial Stabilization
O2, IV access, monitor
Diagnostics
CT head without contrast STAT
Treatment
If ischemic within window → tPA or thrombectomy
Monitoring & Disposition
Neuro checks q1h, admit ICU/stroke unit, aspirin if not a candidate for tPA
Initial Stabilization
2 large-bore IVs, monitor, pulse ox, IV fluids
Diagnostics
Type & cross, CBC, CMP, coags
Medical Management
IV PPI, NPO, octreotide + ceftriaxone if variceal suspected
Consultation
GI consult for urgent EGD
Ectopic Pregnancy
IV access, monitor, type & cross, OB consult, β-hCG, TVUS, laparotomy if ruptured
Preeclampsia/Eclampsia
Magnesium sulfate, IV labetalol/hydralazine, OB consult, delivery if ≥34wks or unstable
Preterm Labor
Tocolytics (if no contraindication), betamethasone, GBS prophylaxis
Febrile Infant <28 Days
Admit, blood/urine/CSF cultures, empiric IV antibiotics
Croup
O2, nebulized epi if severe, steroids, cool mist
Asthma
Albuterol, steroids, O2, peak flow
Why This List Matters
High-Yield Scenarios
Step 3 has ~10–12 classic CCS scenarios that repeat across exams.
Instant Recall
If you can recall these bundles instantly, you won't waste time thinking "what did I forget?"
Comprehensive Approach
These guarantee you hit diagnosis + stabilization + treatment + consult + disposition all at once.
Time Efficiency
Prebuilt mini-order sets save you time and guarantee you don't miss points.