Med-Surg · Immune / Hematology / Oncology
Neutropenia, Chemo Safety & Sickle Cell
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Prepared for Pass the Shift (owner: Kristina, RN). Always follow your facility’s protocols, provider orders, and current drug references.
1. Overview and Pathophysiology
is a low neutrophil count; ANC < 500/mm³ is severe and infection risk soars. Fever may be the only early sign—febrile neutropenia is an emergency.
Chemotherapy kills rapidly dividing cells (tumor and marrow, GI mucosa, hair). Extravasation of vesicants can destroy tissue. Oncologic emergencies include tumor lysis, SVC syndrome, spinal cord compression, hypercalcemia, and DIC.
Sickle cell disease: hemoglobin S polymerizes under stress → rigid RBCs → vaso-occlusion, hemolysis, and organ damage. Vaso-occlusive crisis is intensely painful; acute chest syndrome and stroke are life-threatening.
2. Causes and Risk Factors
- Neutropenia: chemo/radiation, leukemia, severe infection, drugs (e.g., methimazole, clozapine)
- Chemo toxicity: agent-specific (anthracycline cardiotoxicity, cisplatin nephro/ototoxicity, vincristine neuropathy, bleomycin lung)
- Sickle crises: infection, dehydration, hypoxia, cold, acidosis, stress, high altitude
3. Signs and Symptoms
- Neutropenia: fever ≥ 38.0°C (100.4°F) often taught threshold—know facility definition; sore throat, cough, dysuria may be muted
- Thrombocytopenia: petechiae, bleeding gums, melena
- Anemia: fatigue, pallor, dyspnea
- Chemo: mucositis, N/V, alopecia, diarrhea/constipation, fatigue, neuropathy
- Sickle VOC: severe bone/joint pain; acute chest: chest pain, fever, infiltrate, hypoxia; priapism; stroke signs
4. Diagnostics and Labs
Lab reference ranges vary by laboratory. Always use your facility’s ranges.
| Test | Typical / critical | Nursing relevance |
|---|---|---|
| WBC / ANC | ANC < 500 = severe | Neutropenic precautions |
| Platelets | < 50k bleeding risk; < 20k spontaneous risk often taught | Bleeding precautions |
| Hgb / Hct | — | Transfusion thresholds individualized |
| Uric acid, K⁺, phos, Ca²⁺ | TLS pattern: ↑K ↑phos ↑uric ↓Ca | Cardiac monitor |
| Cultures | Before abx when possible | Febrile neutropenia workup |
| Retic count, LDH, bili | Hemolysis | Sickle / hemolytic processes |
| CXR | Acute chest | Sickle emergency |
5. Priority Nursing Assessments
- Temperature trends; subtle infection signs
- Mucosa, IV sites, lines, wounds
- Bleeding, neuro changes (intracranial bleed), SpO₂
- Chemo infusion site continuously for vesicants
- Pain score and location in sickle cell; chest/neuro symptoms
- Hydration, vaccination status, psychosocial distress
6. Priority Nursing Interventions
Febrile neutropenia: urgent provider notify; cultures; prompt broad-spectrum IV antibiotics per protocol; protective environment (private room, hand hygiene, visitor rules, no fresh flowers/plants per policy; safe food practices).
Bleeding precautions: soft toothbrush, electric razor, no IM if avoidable, prolonged pressure after sticks, avoid NSAIDs unless ordered.
Chemo safety: dual verification per policy; PPE for handling; monitor for extravasation—stop infusion, aspirate, don’t remove IV yet, follow antidote protocol, notify.
TLS prevention: hydration, allopurinol/rasburicase as ordered, telemetry, I&O.
Sickle VOC: aggressive analgesia (believe the pain), IV fluids, O₂ if hypoxic, warmth, incentive spirometry, treat infection; hydroxyurea adherence teaching when prescribed.
Transfusion reaction: stop transfusion, NS new tubing, notify provider/blood bank, monitor—follow policy.
7. Medications
| Class / examples | Role | Nursing considerations |
|---|---|---|
| Filgrastim / pegfilgrastim | Raise neutrophils | Bone pain common |
| Antiemetics (ondansetron, NK1 antagonists, olanzapine regimens) | CINV prevention | Give on schedule, not only PRN for highly emetogenic regimens |
| Allopurinol / rasburicase | TLS uric acid | Rasburicase—G6PD caution |
| Hydroxyurea | Sickle cell | Adherence reduces crises; CBC monitoring; teratogenic counseling |
| Opioids | VOC pain | PCA often used; constipation prophylaxis |
| Antibiotics / antifungals | Febrile neutropenia | Door-to-needle time matters |
| Epoetin (selected) | Anemia | Thrombosis risk if overused |
| Chemo agents | Cytotoxic | Agent-specific toxicities—know your drug |
8. Patient Education
- Report fever immediately when neutropenic—don’t wait
- Infection avoidance without becoming isolated from life; hand hygiene; avoid crowds during nadir as advised
- Oral care for mucositis; soft foods; magic mouthwash if ordered
- Sickle: hydrate, avoid extreme cold, vaccines (including meningococcal/pneumococcal as indicated), seek care for fever/chest pain/neuro changes
- Safe handling of oral chemo at home (caregiver PPE per instructions)
- Fertility/sexual health and emotional support resources
9. Complications
- Sepsis/septic shock
- Extravasation necrosis
- TLS → arrhythmias / AKI
- SVC syndrome, cord compression (back pain + neuro deficits)
- Acute chest, stroke, splenic sequestration (peds), organ failure in sickle cell
- Opioid undertreatment stigma—advocate for adequate analgesia
10. Memory Aids
- “Fever + low ANC = emergency”
- “Stop the drip” first for transfusion reaction or extravasation
- “TLS: High K, high phos, high uric, low Ca”
- “Oxygen, fluids, pain, warmth” for sickle VOC
- “Believe sickle pain”
11. NCLEX-Style Practice Questions
1. Chemo client with ANC 400/mm³ and temp 38.3°C (100.9°F). Best action?
A. Acetaminophen only and recheck in 8 hours
B. Notify provider immediately and anticipate cultures plus prompt IV antibiotics
C. Document as expected and encourage crowds
D. Give a live vaccine today
Answer: B. Febrile neutropenia can progress to septic shock rapidly.
2. Ten minutes into a blood transfusion: wheezing, hives, BP 80/50. After stopping the transfusion, next priority?
A. Flush the same tubing with D5W
B. Keep IV open with normal saline using new tubing and call for help / epinephrine per anaphylaxis protocol
C. Finish the unit quickly
D. Ignore if hives alone
Answer: B. Stop product, NS via new tubing, treat anaphylaxis/support ABCs, notify blood bank.
3. First nursing action if a vesicant chemo line site swells and burns?
A. Speed up the infusion
B. Stop the infusion and follow extravasation protocol
C. Apply a tight tourniquet proximal and leave for hours without calling
D. Ignore until the bag finishes
Answer: B. Limit tissue injury immediately.
4. Priority interventions for sickle vaso-occlusive crisis include:
A. Ice baths and fluid restriction
B. Analgesia, hydration, and oxygen if hypoxic
C. IM penicillin into every painful site
D. Withholding opioids to avoid dependence during crisis
Answer: B. Support perfusion and treat pain aggressively; cold worsens sickling.
5. Which lab pattern fits tumor lysis syndrome?
A. Low K⁺, low phos, high Ca²⁺
B. High K⁺, high phosphorus, high uric acid, low calcium
C. Isolated low sodium only
D. High calcium with low uric acid always
Answer: B. Massive cell kill releases intracellular ions and nucleic acids.
References
Centers for Disease Control and Prevention. (n.d.). Sickle cell disease. Retrieved October 15, 2026, from https://www.cdc.gov/sickle-cell/
MedlinePlus. (n.d.). Neutropenia. National Library of Medicine. Retrieved October 15, 2026, from https://medlineplus.gov/ency/article/000552.htm
National Council of State Boards of Nursing. (2026). 2026 NCLEX-RN test plan. https://www.nclex.com/test-plans.page
Zimmer, A. J., & Freifeld, A. G. (related reviews). Febrile neutropenia concepts summarized in StatPearls oncology supportive care topics. https://www.ncbi.nlm.nih.gov/books/
National Cancer Institute. (n.d.). Chemotherapy and you. https://www.cancer.gov/