A nurse is caring for a client with acute lymphoblastic leuk… | 마이메르시 MyMerci
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문제

A nurse is caring for a client with acute lymphoblastic leukemia (ALL) who has just completed the first cycle of chemotherapy. Which assessment finding requires the nurse's immediate attention?

해설
Fever with chills in a neutropenic patient post-chemotherapy is a medical emergency requiring immediate intervention to prevent sepsis. Other findings (low WBC, platelets, hemoglobin) are expected or less urgent.

심화 해설

Core Nursing Explanation Key Concept Analysis: This question assesses the nurse's ability to prioritize life-threatening complications in a patient with Acute Lymphoblastic Leukemia (ALL) who is immunocompromised after chemotherapy. The core theme is recognizing Febrile Neutropenia as an oncologic emergency. Chemotherapy destroys rapidly dividing cells, including cancer cells and healthy bone marrow cells, leading to Myelosuppression. This results in Neutropenia (low neutrophils), Thrombocytopenia (low platelets), and Anemia (low red blood cells). Among these, neutropenia is the most immediate threat to life because it severely compromises the body's ability to fight infection. Answer Rationale: Key Point! A temperature of 101.8°F (38.8°C) with chills in this context is the hallmark sign of a potential systemic infection. For a patient with suspected or confirmed neutropenia, a single oral temperature of ≥100.4°F (38.0°C) is considered a fever and a medical emergency. The patient's immune system is too weak to mount a typical inflammatory response, so fever may be the only early sign of a severe, rapidly progressing infection that can lead to Sepsis and death. This requires immediate intervention: blood cultures, broad-spectrum IV antibiotics, and close monitoring. Distractor Analysis:
Watch out for confusion! While all the lab values are abnormal, they represent expected consequences of chemotherapy that require monitoring and supportive care, but not necessarily immediate, emergency action.
Option 1 (WBC 1,200/mm³): This confirms Neutropenia (an Absolute Neutrophil Count (ANC) < 1,500/mm³ is neutropenic; < 500/mm³ is severe). It is a critical finding that explains the patient's high risk, but the finding itself is a condition, not an acute event requiring immediate action like a fever is.
Option 3 (Platelets 45,000/mm³): This indicates significant Thrombocytopenia (< 150,000/mm³). It requires precautions to prevent bleeding (e.g., avoiding IM injections, using soft toothbrushes) and may necessitate a platelet transfusion, but it is not the most immediate life threat unless active bleeding is present.
Option 4 (Hgb 8.2 g/dL): This is Anemia. While it causes fatigue and may require a red blood cell transfusion, it is typically not an acute emergency unless the patient is symptomatic (e.g., chest pain, severe dyspnea, tachycardia). Related Concepts: The priority framework here is ABCs (Airway, Breathing, Circulation) and Maslow's Hierarchy of Needs. A systemic infection threatens physiological integrity (the base of the pyramid) by impairing circulation and tissue perfusion, leading to septic shock. The nursing process dictates that assessment of a potential infection (the fever) triggers immediate implementation of life-saving interventions.
Concept SummaryFebrile Neutropenia: Single temp ≥100.4°F (38.0°C) in a neutropenic patient. An oncologic emergency. • Myelosuppression: Bone marrow suppression from chemo, causing neutropenia, thrombocytopenia, anemia. • ANC Calculation: ANC = WBC × (%Segs + %Bands). Severe neutropenia = ANC < 500/mm³. • Priority Setting: Active, unstable condition (fever/infection) > chronic, stable condition (low lab values).
Side-by-Side Comparison!
ComplicationKey Lab ValuePrimary RiskPriority Nursing Action
Febrile NeutropeniaFever + ANC < 500/mm³Sepsis, DeathImmediate: Blood cultures, IV antibiotics.
ThrombocytopeniaPlatelets < 50,000/mm³BleedingBleeding precautions. Monitor for petechiae, bruising.
AnemiaHgb < 8 g/dL (symptomatic)Fatigue, Tissue hypoxiaActivity tolerance assessment. May need RBC transfusion.

Anatomy, Physiology & Pharmacology PointsPathophysiology: Chemotherapy targets all rapidly dividing cells. Bone marrow stem cells are highly active, leading to decreased production of WBCs (especially neutrophils), RBCs, and platelets. • Neutrophil Function: First line of defense against bacterial and fungal infections. Their absence leaves the body defenseless. • Drug Mechanism: Initial empiric antibiotic therapy for febrile neutropenia is broad-spectrum (e.g., Piperacillin-tazobactam, Cefepime) to cover a wide range of potential pathogens until culture results return.
Memory TipsFever FIRST: In an immunocompromised patient, FEVER is the FIRST and FOREMOST finding that demands action. • 100.4 = Red Alert: Remember the magic number: 100.4°F (38.0°C). One reading at or above this = emergency. • Mnemonic: N.A.B. for Neutropenia Precautions: No fresh flowers/fruits, Avoid crowds, Be meticulous with hand hygiene.
High-Frequency NCLEX Topics This is a classic NCLEX priority question. The exam loves to test your ability to differentiate between a concerning finding and a true emergency. You will often see a list of abnormal data for a chemo patient, and you must choose the one indicating an acute, unstable condition (like fever) over the expected abnormal labs. Remember: "Expected abnormal labs are for monitoring; fever is for acting."
Watch Out for Question Variations!Shift from Symptom to Intervention: "The nurse notes a fever of 101.5°F in a neutropenic patient. Which action should the nurse take first?" (Answer: Obtain blood cultures from two sites before administering antibiotics). • Shift to Patient Education: "Which statement by a patient receiving chemotherapy indicates understanding of infection prevention?" (Correct answer: "I will take my temperature daily and call if it reaches 100.4°F."). • Adding a Symptom: If the question added "bleeding gums" to the low platelet option, it would increase its urgency, but fever in a neutropenic patient still generally takes top priority.

임상 시나리오

Nursing Clinical Practice Guide Clinical Scenario: You are the nurse on an oncology unit. Mr. Johnson, 58, with ALL, received his first cycle of chemotherapy 7 days ago. During your afternoon rounds, he complains of feeling chilly. You take his vital signs: Temp 101.8°F (38.8°C) oral, HR 112, RR 24, BP 118/70. He has no obvious source of infection. Nursing Intervention Strategy: 1. Immediate Assessment & Action (Within 15 minutes): • Notify the physician/provider immediately. Do not wait. • Obtain two sets of blood cultures from two different peripheral sites (or one peripheral and one from a central line lumen). This is critical before starting antibiotics. • Prepare to administer broad-spectrum IV antibiotics STAT as ordered. Time-to-antibiotics is a key quality metric. • Initiate continuous monitoring of vital signs and oxygen saturation. 2. Ongoing Care & Monitoring: • Perform a thorough head-to-toe assessment, paying special attention to common infection sites: mouth (mucositis), skin (IV sites, perianal area), lungs, and urinary tract. • Implement Neutropenic Precautions (Reverse Isolation): Private room if possible, strict hand hygiene for everyone, no fresh flowers/plants, no raw fruits/vegetables, limit visitors. • Administer antipyretics (e.g., Acetaminophen) as ordered, but only after blood cultures are drawn, as they can mask fever. • Provide supportive care: encourage fluid intake, manage chills with warm blankets. Patient Safety and Precautions: • Do NOT administer intramuscular (IM) injections or take rectal temperatures due to thrombocytopenia risk. • Avoid NSAIDs (e.g., Ibuprofen) for fever due to increased bleeding risk from thrombocytopenia. • Monitor closely for signs of septic shock: Hypotension, tachycardia, tachypnea, altered mental status, decreased urine output.
Nursing Procedure & Medication Flow Procedure: Obtaining Blood Cultures in a Febrile Neutropenic Patient 1. Gather supplies: Two blood culture bottles (aerobic and anaerobic for each set), chlorhexidine swabs, tourniquet, needles, syringes, labels. 2. Perform meticulous hand hygiene and don gloves. 3. Cleanse the venipuncture site with chlorhexidine using a back-and-forth scrub for 30 seconds and allow to air dry completely. 4. Draw 10-20 mL of blood per culture set (check hospital policy). Draw from two different sites to distinguish true pathogens from skin contaminants. 5. Inoculate the culture bottles, label them with site/source, time, and date. 6. Send to lab STAT. Medication: Empiric Antibiotic AdministrationCommon Drugs: Piperacillin-tazobam (Zosyn), Cefepime, Meropenem. • Key Point: These are typically given IV over 30 minutes to several hours. Administer the first dose as a STAT infusion. • Monitoring: Watch for allergic reactions and monitor renal function (many antibiotics are nephrotoxic).
A Word from Your Senior Nurse "In oncology nursing, we walk a fine line between treating the cancer and protecting the patient from treatment side effects. That fever isn't just a number on a screen; it's a silent alarm bell screaming that your patient has no army to fight an invader. Your speed and accuracy in responding—calling the provider, getting those cultures, hanging the antibiotics—literally save lives. On the NCLEX, they're testing this clinical judgment: can you spot the fire (fever) amidst the smoke (low labs)? In real life, this judgment keeps your patients safe. Always think: 'What can kill my patient first?' That's your priority."

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