AONN CERTIFICATION PRACTICE EXAM – QUESTIONS AND ANSWERS |
VERIFIED AND WELL DETAILED ANSWERS | PLUS RATIONALES | DOWNLOAD
AND PASS | LATEST EXAM UPDATE 2026/2027
Core Domains:
• Oncology Nursing Foundations and Symptom Management
• Treatment Modalities and Adverse Effects
• Oncologic Emergencies and Acute Care
• Psychosocial, Spiritual, and Ethical Dimensions of Care
• Survivorship, Palliative, and End-of-Life Care
• Professional Standards, Legal Issues, and Quality Improvement
• Pharmacology, Targeted Therapy, and Immunotherapy Principles
• Research, Evidence-Based Practice, and Patient Education
Introduction
This comprehensive practice examination is designed to rigorously assess the
knowledge, critical thinking, and clinical judgment required for certification in
oncology nursing. The questions span foundational theory, complex symptom
management, emergency recognition, and the nuanced application of ethical and
professional standards. Utilizing a multiple-choice format, the exam incorporates
evidence-based practice, regulatory mandates, and real-world clinical scenarios to
evaluate the candidate’s ability to make sound decisions in dynamic patient care
settings. This assessment emphasizes the integration of scientific principles with
compassionate, patient-centered care, preparing the nurse for the demands of
specialized oncology practice.
Section One: Questions 1–50
,1. A patient with acute myeloid leukemia (AML) is receiving induction
chemotherapy with cytarabine and daunorubicin. Which assessment finding is
the highest priority for the nurse to report to the healthcare provider
immediately?
A. Serum potassium level of 3.2 mEq/L
B. Temperature of 38.2°C (100.8°F)
C. Platelet count of 45,000/mm³
D. Nausea rated 6 on a 0-10 scale
🟢 Correct Answer: B. Temperature of 38.2°C (100.8°F)
🔴 Explanation: A temperature of 38.2°C (100.8°F) in a neutropenic patient (post-
induction chemotherapy) is a potential sign of febrile neutropenia, an oncologic
emergency requiring immediate broad-spectrum antibiotics and evaluation. While
hypokalemia, thrombocytopenia, and nausea are important, they do not carry the
same immediate, life-threatening urgency as a fever indicating possible sepsis.
2. A nurse is teaching a patient who is starting imatinib for chronic myeloid
leukemia (CML). Which patient statement indicates a correct understanding of
the medication's primary side effect profile?
A. "I should expect to lose my hair within the first few weeks."
B. "I need to watch for signs of bleeding and easy bruising."
C. "I may experience swelling around my eyes and in my lower legs."
D. "I will need to avoid all foods containing vitamin K."
🟢 Correct Answer: C. "I may experience swelling around my eyes and in my
lower legs."
🔴 Explanation: Fluid retention, including periorbital and peripheral edema, is a
well-documented and common side effect of imatinib. The other options describe
,side effects more typical of traditional chemotherapy agents (alopecia,
myelosuppression) or anticoagulant therapy (vitamin K restriction).
3. A patient undergoing external beam radiation therapy for a brain tumor
reports increasing fatigue. Which nursing intervention is most appropriate?
A. Instruct the patient to rest in bed as much as possible.
B. Recommend a high-protein, high-calorie diet.
C. Encourage the patient to plan activities and rest periods.
D. Suggest limiting fluid intake to reduce brain swelling.
🟢 Correct Answer: C. Encourage the patient to plan activities and rest periods.
🔴 Explanation: Energy conservation is a key strategy for managing cancer-
related fatigue (CRF). Pacing activities and scheduling rest can help the patient
manage daily tasks without complete exhaustion. Complete bed rest can lead to
deconditioning and worsen fatigue. The other options are not targeted
interventions for fatigue management.
4. The nurse is caring for a patient who has just received a dose of rituximab.
Which adverse effect requires the most immediate nursing action?
A. Mild headache
B. Flushing and chills
C. Sudden onset of dyspnea and hypotension
D. Nausea and vomiting
🟢 Correct Answer: C. Sudden onset of dyspnea and hypotension
🔴 Explanation: Sudden onset of dyspnea and hypotension are signs of a severe
infusion-related reaction, which can progress to anaphylaxis. This is a known and
potentially fatal adverse effect of rituximab. The nurse must stop the infusion and
initiate emergency protocols immediately. Other symptoms, while uncomfortable,
are less immediately life-threatening.
, 5. A patient with advanced ovarian cancer is experiencing malignant ascites.
The nurse understands that the primary pathophysiological mechanism for this
condition is:
A. Increased capillary permeability due to tumor necrosis factor.
B. Obstruction of lymphatic drainage by tumor cells.
C. Hypoalbuminemia from malnutrition and cachexia.
D. Portal hypertension from liver metastasis.
🟢 Correct Answer: B. Obstruction of lymphatic drainage by tumor cells.
🔴 Explanation: Malignant ascites is most commonly caused by tumor cells
obstructing the peritoneal lymphatic drainage system. This prevents the normal
reabsorption of fluid from the peritoneal cavity, leading to accumulation. While
other factors may contribute, lymphatic obstruction is the primary mechanism.
6. A patient is prescribed morphine sulfate for severe cancer pain. What is the
priority nursing assessment before administering this medication?
A. Pain level
B. Level of consciousness
C. Respiratory rate
D. Bowel sounds
🟢 Correct Answer: C. Respiratory rate
🔴 Explanation: Respiratory depression is the most serious and potentially fatal
side effect of opioid analgesics like morphine. The nurse's priority assessment is
to check the patient's respiratory rate and depth to ensure it is within a safe range
before administration and to monitor for subsequent depression.
7. A female patient with breast cancer is prescribed tamoxifen. The nurse's
teaching should include a warning about which serious adverse effect?
VERIFIED AND WELL DETAILED ANSWERS | PLUS RATIONALES | DOWNLOAD
AND PASS | LATEST EXAM UPDATE 2026/2027
Core Domains:
• Oncology Nursing Foundations and Symptom Management
• Treatment Modalities and Adverse Effects
• Oncologic Emergencies and Acute Care
• Psychosocial, Spiritual, and Ethical Dimensions of Care
• Survivorship, Palliative, and End-of-Life Care
• Professional Standards, Legal Issues, and Quality Improvement
• Pharmacology, Targeted Therapy, and Immunotherapy Principles
• Research, Evidence-Based Practice, and Patient Education
Introduction
This comprehensive practice examination is designed to rigorously assess the
knowledge, critical thinking, and clinical judgment required for certification in
oncology nursing. The questions span foundational theory, complex symptom
management, emergency recognition, and the nuanced application of ethical and
professional standards. Utilizing a multiple-choice format, the exam incorporates
evidence-based practice, regulatory mandates, and real-world clinical scenarios to
evaluate the candidate’s ability to make sound decisions in dynamic patient care
settings. This assessment emphasizes the integration of scientific principles with
compassionate, patient-centered care, preparing the nurse for the demands of
specialized oncology practice.
Section One: Questions 1–50
,1. A patient with acute myeloid leukemia (AML) is receiving induction
chemotherapy with cytarabine and daunorubicin. Which assessment finding is
the highest priority for the nurse to report to the healthcare provider
immediately?
A. Serum potassium level of 3.2 mEq/L
B. Temperature of 38.2°C (100.8°F)
C. Platelet count of 45,000/mm³
D. Nausea rated 6 on a 0-10 scale
🟢 Correct Answer: B. Temperature of 38.2°C (100.8°F)
🔴 Explanation: A temperature of 38.2°C (100.8°F) in a neutropenic patient (post-
induction chemotherapy) is a potential sign of febrile neutropenia, an oncologic
emergency requiring immediate broad-spectrum antibiotics and evaluation. While
hypokalemia, thrombocytopenia, and nausea are important, they do not carry the
same immediate, life-threatening urgency as a fever indicating possible sepsis.
2. A nurse is teaching a patient who is starting imatinib for chronic myeloid
leukemia (CML). Which patient statement indicates a correct understanding of
the medication's primary side effect profile?
A. "I should expect to lose my hair within the first few weeks."
B. "I need to watch for signs of bleeding and easy bruising."
C. "I may experience swelling around my eyes and in my lower legs."
D. "I will need to avoid all foods containing vitamin K."
🟢 Correct Answer: C. "I may experience swelling around my eyes and in my
lower legs."
🔴 Explanation: Fluid retention, including periorbital and peripheral edema, is a
well-documented and common side effect of imatinib. The other options describe
,side effects more typical of traditional chemotherapy agents (alopecia,
myelosuppression) or anticoagulant therapy (vitamin K restriction).
3. A patient undergoing external beam radiation therapy for a brain tumor
reports increasing fatigue. Which nursing intervention is most appropriate?
A. Instruct the patient to rest in bed as much as possible.
B. Recommend a high-protein, high-calorie diet.
C. Encourage the patient to plan activities and rest periods.
D. Suggest limiting fluid intake to reduce brain swelling.
🟢 Correct Answer: C. Encourage the patient to plan activities and rest periods.
🔴 Explanation: Energy conservation is a key strategy for managing cancer-
related fatigue (CRF). Pacing activities and scheduling rest can help the patient
manage daily tasks without complete exhaustion. Complete bed rest can lead to
deconditioning and worsen fatigue. The other options are not targeted
interventions for fatigue management.
4. The nurse is caring for a patient who has just received a dose of rituximab.
Which adverse effect requires the most immediate nursing action?
A. Mild headache
B. Flushing and chills
C. Sudden onset of dyspnea and hypotension
D. Nausea and vomiting
🟢 Correct Answer: C. Sudden onset of dyspnea and hypotension
🔴 Explanation: Sudden onset of dyspnea and hypotension are signs of a severe
infusion-related reaction, which can progress to anaphylaxis. This is a known and
potentially fatal adverse effect of rituximab. The nurse must stop the infusion and
initiate emergency protocols immediately. Other symptoms, while uncomfortable,
are less immediately life-threatening.
, 5. A patient with advanced ovarian cancer is experiencing malignant ascites.
The nurse understands that the primary pathophysiological mechanism for this
condition is:
A. Increased capillary permeability due to tumor necrosis factor.
B. Obstruction of lymphatic drainage by tumor cells.
C. Hypoalbuminemia from malnutrition and cachexia.
D. Portal hypertension from liver metastasis.
🟢 Correct Answer: B. Obstruction of lymphatic drainage by tumor cells.
🔴 Explanation: Malignant ascites is most commonly caused by tumor cells
obstructing the peritoneal lymphatic drainage system. This prevents the normal
reabsorption of fluid from the peritoneal cavity, leading to accumulation. While
other factors may contribute, lymphatic obstruction is the primary mechanism.
6. A patient is prescribed morphine sulfate for severe cancer pain. What is the
priority nursing assessment before administering this medication?
A. Pain level
B. Level of consciousness
C. Respiratory rate
D. Bowel sounds
🟢 Correct Answer: C. Respiratory rate
🔴 Explanation: Respiratory depression is the most serious and potentially fatal
side effect of opioid analgesics like morphine. The nurse's priority assessment is
to check the patient's respiratory rate and depth to ensure it is within a safe range
before administration and to monitor for subsequent depression.
7. A female patient with breast cancer is prescribed tamoxifen. The nurse's
teaching should include a warning about which serious adverse effect?
