Core Nursing Explanation
This question tests the critical nursing skill of
priority setting for a patient with
Acute Lymphoblastic Leukemia (ALL) undergoing chemotherapy. The core principle is recognizing that
Key Point! fever in a patient who is immunocompromised (neutropenic) is a medical and nursing emergency, often referred to as
Febrile Neutropenia.
Key Concept Analysis: Chemotherapy targets rapidly dividing cells, which includes not only cancer cells but also the bone marrow's hematopoietic stem cells. This leads to
Myelosuppression, causing a drop in all blood cell lines:
Neutropenia (low neutrophils, a type of WBC),
Thrombocytopenia (low platelets), and
Anemia (low red blood cells). While all are serious, the most immediate life-threatening complication is
infection due to neutropenia. A patient with a severely low neutrophil count has a drastically impaired ability to fight infection. A fever may be the
only sign of a serious, potentially fatal infection, as the typical inflammatory response (redness, swelling, pus) may be absent.
Answer Rationale: Option ① is correct because it presents the classic signs of a systemic infection:
Temperature of 101.2°F (38.4°C) (fever), chills, and diaphoresis. In this context, it signals
Febrile Neutropenia, which requires
immediate intervention (blood cultures, broad-spectrum IV antibiotics, close monitoring) to prevent progression to
Sepsis and septic shock.
Distractor Analysis:
Watch out for confusion! Option ② (
Platelet count of 45,000/mm³ with petechiae): Thrombocytopenia is a serious risk for bleeding. However, the priority is
Airway, Breathing, Circulation (ABC). An active bleed threatening circulation is an emergency, but petechiae alone indicates a risk, not an active, life-threatening hemorrhage. Infection (fever) is a more immediate threat to all body systems.
Option ③ (
Hemoglobin of 8.2 g/dL with fatigue): Anemia is common and causes significant symptoms like fatigue. However, the body can often compensate for chronic anemia. It requires intervention (e.g., transfusion per protocol) but is not typically an
immediate life threat like an uncontrolled infection.
Option ④ (
WBC count of 2,500/mm³ alone): Leukopenia/Neutropenia is the
condition that creates the risk. Without the symptom of fever, it is a laboratory finding that requires protective isolation (neutropenic precautions) and monitoring, but not the same level of urgent intervention as an active, suspected infection.
Related Concepts: The nursing priority follows the
ABCs and Maslow's Hierarchy of Needs. A systemic infection directly threatens physiological needs (oxygenation, circulation) and is therefore the highest priority. Remember the mnemonic for chemotherapy side effects: "
B.M.W." –
Bone marrow suppression,
Mucositits,
Well-being (N/V). Bone marrow suppression leads to the triad of problems in this question.
Concept Summary
| Complication | Key Lab Value | Primary Risk | Nursing Priority |
| Neutropenia | ANC < 1,500/mm³ (Severe: < 500/mm³) | Infection, Sepsis | HIGHEST: Fever assessment, infection control, urgent antibiotics. |
| Thrombocytopenia | Platelets < 150,000/mm³ (Risk: < 50,000/mm³) | Bleeding | Monitor for bleeding, avoid trauma/IM injections, platelet transfusion for active bleed or very low counts. |
| Anemia | Hgb < 12 g/dL (F) 13.5 g/dL (M) | Fatigue, Hypoxia | Manage fatigue, administer RBC transfusions per protocol, monitor oxygenation. |
Side-by-Side Comparison!
| Scenario | Immediate Action (Priority) | Rationale |
| Febrile Neutropenia (Fever + Low WBC) | STAT blood cultures x2 & Broad-spectrum IV antibiotics. | Infection can become fatal within hours. Do not wait for culture results. |
| Thrombocytopenia + Active Bleeding (e.g., GI bleed) | Apply direct pressure, notify provider, prepare for platelet transfusion. | Active bleeding threatens circulation (C in ABCs). |
| Thrombocytopenia + Petechiae Only (No active bleed) | Implement bleeding precautions, monitor closely. | This is a risk, not an active life-threatening problem. |
Anatomy, Physiology & Pharmacology Points
- Pathophysiology: Chemotherapy causes myelosuppression by damaging the bone marrow. Neutrophils have a short lifespan (~7 hours), so their count drops quickly, leaving the body defenseless.
- Lab Value: The critical value is the Absolute Neutrophil Count (ANC). ANC < 500 cells/mm³ = severe risk. Fever (often defined as a single temp ≥ 100.4°F / 38.0°C or ≥ 100°F / 37.8°C over 1 hour) in this setting is an emergency.
- Pharmacology: First-line intervention is empiric broad-spectrum antibiotics (e.g., piperacillin-tazobactam, cefepime) to cover potential gram-negative and gram-positive organisms until cultures identify the specific pathogen.
Memory Tips
- Mnemonic: "Fever First!" For a chemo patient, think Fever = Fire drill = First priority.
- Rule of Thumb: Any fever in a patient receiving chemotherapy should be treated as a potential septic emergency until proven otherwise. "When in doubt, check it out—immediately."
High-Frequency NCLEX Topics
NCLEX heavily tests
priority setting and
oncology emergencies. Febrile neutropenia is a classic. You must be able to distinguish between a serious concern (low platelets) and an immediate life-threatening emergency (fever with neutropenia). Expect questions that list multiple abnormal findings and ask "Which requires immediate intervention?" or "Which finding should the nurse report first?"
Watch Out for Question Variations!
- Symptom Focus: "A client on chemotherapy has a temperature of 101.5°F (38.6°C). Which action should the nurse take first?" (Answer: Obtain blood cultures.)
- Teaching Focus: "Which instruction is most important for the nurse to include when teaching a client with neutropenia?" (Answer: "Report any fever of 100.4°F (38.0°C) or higher immediately.")
- Intervention Focus: "The nurse is reviewing orders for a client with febrile neutropenia. Which order should be implemented first?" (Answer: Administer IV cefepime.)