In this episode of Hospital Medicine Unplugged, we sprint through oncologic emergencies—recognize early, stabilize ABCs, start disease-directed therapy fast.
We sort the chaos into four bins: metabolic, hematologic, structural, and treatment-related. Across all bins: secure airway/breathing/circulation, get oncology on board, control symptoms, and loop in palliative care for values-aligned decisions.
• Tumor lysis syndrome (TLS): Aggressive IV hydration (≈ 2–3 L/m²/day, target urine output), monitor K/PO₄/Ca/uric acid q4–6h. Rasburicase for established TLS (avoid in G6PD deficiency); allopurinol for prophylaxis. Fix electrolytes; dialyze if refractory or oligo-anuric.
• Hypercalcemia of malignancy: Vigorous 0.9% saline to euvolemia → IV bisphosphonate (zoledronic acid 4 mg IV or pamidronate 60–90 mg IV). Calcitonin for rapid but short-lived drop. Steroids for steroid-responsive tumors (e.g., lymphoma, myeloma). Denosumab if refractory/renal failure.
• SIADH (hyponatremia): Confirm euvolemic hypo-Na. Fluid restrict if mild; hypertonic saline for severe/symptomatic with safe correction targets (≤8–10 mmol/L in 24h). Treat the cancer.
Hematologic—time is tissue:
• Febrile neutropenia: Antipseudomonal β-lactam within 60 minutes (cefepime, piperacillin-tazobactam, or carbapenem). Add agents only for specific indications. Risk-stratify (MASCC)—admit high-risk; selected low-risk may do oral/outpatient with close follow-up.
• Hyperviscosity (e.g., Waldenström): Emergent plasmapheresis → disease-directed chemo.
• Leukostasis (hyperleukocytosis in AML/ALL): Hydroxyurea now, consider leukapheresis, urgent chemo; avoid routine RBC transfusion before cytoreduction (worsens viscosity).
• DIC: Treat the trigger, support with platelets/cryoprecipitate/FFP targeting Plt >10–20k (higher if bleeding/procedures) and fibrinogen >150 mg/dL.
Structural—don’t miss the fixable:
• Spinal cord compression: STAT MRI. Dexamethasone 10–24 mg IV bolus → 4–6 mg IV q6h. Surgery if operative candidate/instability; otherwise urgent radiation.
• SVC syndrome: Contrast CT to confirm/plan. Endovascular stent = fastest relief; then chemo/radiation by histology. Steroids mainly for lymphoma/thymoma.
• Malignant pericardial tamponade: Emergent echo-guided pericardiocentesis; consider prolonged drain or surgical window for recurrence; align with goals of care.
Therapy-related—protocols save lives:
• Checkpoint inhibitor toxicities (irAEs): Grade 3–4 → methylprednisolone 1–2 mg/kg/day IV, taper slow; add infliximab for steroid-refractory colitis (avoid if perforation/sepsis), organ-specific co-management.
• CAR-T cytokine release syndrome (CRS): Tocilizumab, supportive care ± steroids; ICU for severe CRS/ICANS with protocolized monitoring.
Triage cues for ICU/step-up: airway threat, shock, rapid neuro decline, refractory electrolyte derangements, rising lactate, or need for leukapheresis/plasmapheresis/dialysis.
Medication pitfalls to dodge:
• Steroids before biopsy in stable mediastinal masses can cloud diagnosis.
• Under-resuscitating hypercalcemia (give fluids before diuretics).
• Over-correcting sodium in SIADH (osmotic demyelination risk).
• Delaying antibiotics in neutropenic fever (>60 min increases mortality).
• Rasburicase in G6PD deficiency (hemolysis risk).
We close with the Acute Oncology Bundle you can run today:
ABCs first + early ICU criteria.
Category check (metabolic/hematologic/structural/treatment-related).
Time-zero orders: labs (CBC, CMP, uric acid, LDH, coagulation), cultures if febrile, ECG, CXR.
Condition-specific therapy (e.g., rasburicase, bisphosphonate, antipseudomonal β-lactam, dexamethasone, stent, pericardiocentesis).
Oncology + subspecialists at the bedside (heme/onc, ICU, rad-onc, IR, neurosurg, cardio).
Palliative care early for goals, symptom control, and transitions when appropriate.
Daily re-risking and de-escalation/step-down plans.
Bottom line: recognize patterns, move fast, and match the fix to the physiology—that’s how you turn oncologic emergencies into stabilized patients and salvageable outcomes.