NCLEX-RN Study Guide

NCLEX Oncology Questions: Side Effects (2026)

November 2, 2026 · 5 min read

Short answer. Oncology NCLEX questions follow the treatment, not the diagnosis. Chemotherapy creates three predictable dangers: infection from low white cells, bleeding from low platelets, and anaemia from low red cells. Recognise which one the stem describes.

What the 2026 NCLEX tests in this area

Physiological Adaptation: cancer complications, oncologic emergencies
Pharmacological and Parenteral Therapies: chemotherapy safety, antiemetics, growth factors

Key facts to know

Neutropenic precautions	Private room, no fresh flowers or standing water, no sick visitors, strict hand hygiene
Report immediately during chemotherapy	Fever of 38 C or higher, and any new bleeding or bruising
Extravasation action	Stop the infusion, leave the cannula in place, aspirate per protocol and notify
Tumor lysis syndrome signs	High potassium, high phosphate, low calcium, rising creatinine, and dysrhythmias
Cancer pain principle	Scheduled analgesia ahead of the pain, not as needed only
Hospice focus	Comfort and quality of life, not curative treatment

Practice question from this chapter

A client with colon cancer receiving chemotherapy reports new mouth sores, diarrhea, and a temperature of 38.4 degreesC. The absolute neutrophil count is 400/mm3. Which action should the nurse take first?

Encourage the client to eat spicy foods
Administer the ordered antipyretic
Obtain cultures and notify the provider
Place the client on a regular diet

Show answer and rationale

Correct answer: C. Obtain cultures and notify the provider

Fever with an absolute neutrophil count of 400/mm3 is febrile neutropenia, so cultures must be obtained and the provider notified for immediate antibiotics. Spicy foods worsen the mucositis. Antipyretics mask the fever. A regular diet is not appropriate for a neutropenic client with mouth sores.

Second practice question

A nurse is orienting a new graduate to the radiation oncology unit. Which instruction about staff safety is correct?

Leave the room only after the implant is removed
Minimize time near sources, maximize distance, and use shielding
Wear gloves only
Stand as close as possible to monitor the client

Show answer and rationale

Correct answer: B. Minimize time near sources, maximize distance, and use shielding

Radiation safety is based on time, distance, and shielding; staff minimize time near sources and maintain distance.

Fever in a neutropenic client

A temperature of 38 C or higher in a client receiving chemotherapy is a medical emergency, because infection can progress to sepsis within hours and the usual signs of inflammation may be absent. The correct action is to notify immediately and obtain cultures per protocol, not to give an antipyretic and reassess in four hours.

The same reasoning explains why bleeding needs immediate reporting. Platelets fall before the count is checked, so a new nosebleed or petechiae is a warning, not a minor complaint.

Emergencies with a lab signature

Tumor lysis syndrome and hypercalcemia both present as a confused, weak client with abnormal labs. Learn the pattern: high potassium, high phosphate and low calcium after starting treatment means tumor lysis. Palliative care is a treatment option at any stage, and its hallmark is symptom control with honest goals of care.

Match the symptom to the cell line

Chemotherapy suppresses one cell line faster than the others in a predictable order. Neutrophils fall first, so infection is the earliest risk. Platelets fall next, so bleeding follows. Red cells fall last and slowest, so anaemia appears weeks later. When a stem describes a new symptom, ask which line is low and what precaution that demands.

Then add the drug specific effects. Mucositis from antimetabolites, peripheral neuropathy from vinca alkaloids and platinum agents, cardiotoxicity from anthracyclines, and pulmonary toxicity from bleomycin. The exam expects you to recognise the class before the side effect list.

Safety for the nurse and the family

Body fluids are hazardous for about 48 hours after chemotherapy. Wear gloves for all contact, use a closed system for waste, and teach the family to double flush the toilet and wash soiled linen separately for the first two days. Pregnant nurses should not handle chemotherapy or body fluids.

Oral care, antiemetics given before the infusion rather than after, and a soft toothbrush are practical answers that appear repeatedly. Mucositis prevention is easier than treatment, so the correct option is usually the preventive one.

Frequently asked questions

What temperature is an emergency during chemotherapy?

38 C or higher. Notify the provider immediately, because neutropenic sepsis can develop rapidly.

What is extravasation and what do I do?

Chemotherapy leaking into surrounding tissue. Stop the infusion, keep the cannula, aspirate per protocol and notify the provider.

Are fresh flowers allowed in a neutropenic room?

No. They carry mould and bacteria. Also avoid standing water, raw produce risks and visitors who are unwell.

Is hospice the same as giving up?

No. Hospice is comfort focused care with symptom control, and palliative principles can be applied alongside treatment at any stage.

When is the greatest infection risk after chemotherapy?

Roughly seven to fourteen days after treatment, when the neutrophil count reaches its lowest point. Teach the client to report fever immediately during that window.

How is cancer pain managed?

Around the clock with scheduled long acting analgesia and short acting doses for breakthrough pain. Fear of addiction is not a reason to withhold analgesia in cancer care.

Practise this chapter with rationales

NCLEXDeck gives you practice questions for every body system, with a rationale for the correct answer and for each distractor. Start on the free tier, no card required.

Start free