Haematology is a laboratory-driven speciality, and most exam questions reduce to interpreting a value and choosing the intervention it demands. Whether the problem is too few red cells, too few platelets, or too much clotting, the nursing priorities are oxygenation, bleeding precautions, and safe transfusion. These hematology nursing study notes cover each in turn.
How to use this study guide
Learn the normal ranges cold, then attach one nursing priority to each abnormal direction. A low haemoglobin means an oxygenation problem; a low platelet count means a bleeding problem. That mapping answers most questions before you read the options.
Anaemias and what distinguishes them
- Iron deficiency — most common; microcytic; give iron with vitamin C, expect dark stools, use a straw for liquid forms
- Pernicious anaemia — vitamin B12 deficiency from lack of intrinsic factor; causes neurological symptoms; requires lifelong B12 injections
- Folic acid deficiency — macrocytic without neurological signs; common in pregnancy and alcohol use
- Aplastic anaemia — bone marrow failure affecting all cell lines; infection and bleeding risk
- Common signs — fatigue, pallor, tachycardia, dyspnoea on exertion
Sickle cell disease
A sickle cell crisis is a vaso-occlusive event, and the nursing priorities are hydration, oxygenation, and adequate analgesia. Pain in crisis is severe and frequently undertreated.
- Triggers — dehydration, hypoxia, infection, cold exposure, physical stress
- Priorities — hydration, oxygenation, pain management, warmth, rest
- Opioids are usually required; do not withhold analgesia over addiction concerns
- Never apply cold, which promotes further sickling
- Monitor for acute chest syndrome and stroke
Bleeding and clotting disorders
- Thrombocytopenia — platelets below normal; institute bleeding precautions
- Bleeding precautions — soft toothbrush, electric razor, no rectal temperatures, avoid intramuscular injections, prevent falls
- Haemophilia — factor deficiency; treat with factor replacement; avoid aspirin and contact sports
- Disseminated intravascular coagulation — simultaneous clotting and bleeding; treat the underlying cause
- Deep vein thrombosis — do not massage the affected limb
Anticoagulation monitoring
- Heparin — monitor aPTT; antidote protamine sulfate; monitor platelets for heparin-induced thrombocytopenia
- Warfarin — monitor INR; antidote vitamin K; keep vitamin K intake consistent rather than absent
- Low molecular weight heparin — routine monitoring generally not required; give in the abdomen and do not expel the air bubble
- Teach patients to report bleeding gums, black stools, or unusual bruising
Blood transfusion safety
Transfusion questions are safety questions. Verification with a second qualified person and close observation during the first fifteen minutes prevent the most serious outcomes.
- Verify patient identity and blood product with a second qualified person
- Use normal saline only — never dextrose, which causes haemolysis
- Stay with the patient for the first 15 minutes, when reactions usually begin
- If a reaction is suspected — stop the transfusion immediately, keep the line open with normal saline using new tubing, then notify the provider and blood bank
- Complete the transfusion within the timeframe specified by policy
NCLEX tips: hematology nursing
- The first action in any suspected transfusion reaction is to stop the transfusion.
- Only normal saline is compatible with blood products.
- Low platelets mean bleeding precautions; low haemoglobin means oxygenation and activity tolerance.
- Never apply cold to a sickle cell patient in crisis.
- In pernicious anaemia, B12 replacement is lifelong — oral iron will not correct it.
Reading a complete blood count
Most haematology questions begin with a laboratory value. Knowing which cell line is affected tells you which complication to anticipate and which precautions to institute, before you consider any specific diagnosis.
- Haemoglobin and haematocrit — low values impair oxygen delivery; expect fatigue, tachycardia, and reduced activity tolerance
- White blood cells — low values mean infection risk and blunted fever response; high values suggest infection or malignancy
- Platelets — low values mean bleeding risk; institute bleeding precautions
- Neutrophils — the front-line innate defence against bacterial infection; a low absolute neutrophil count drives protective measures
- Trend matters — a falling value across successive draws is more informative than one result
When a question presents several abnormal values, ask which one poses the most immediate threat to life. A critically low platelet count with active bleeding outranks a modestly low haemoglobin.
Turn this guide into active review
Reading through notes once is recognition, not recall. Convert each section above into questions you answer from memory, then check yourself. The Hematology Nursing Study Notes Bundle packages this material as condensed, exam-ready PDF notes organised by condition, if you would rather review from a prepared set than build one.
Frequently asked questions: hematology nursing
What is the first action in a blood transfusion reaction?
Stop the transfusion immediately. Keep the vein open with normal saline through new tubing, assess the patient, then notify the provider and the blood bank and return the product per policy.
Which fluid can be given with blood?
Normal saline only. Dextrose solutions cause red cells to haemolyse and lactated Ringer’s contains calcium, which can promote clotting in the line.
What are bleeding precautions?
Soft toothbrush, electric razor rather than a blade, no rectal temperatures or suppositories, avoiding intramuscular injections where possible, fall prevention, and monitoring for bruising, bleeding gums, and black stools.
Related guides on Lectures Note
- Fundamentals of Nursing Study Notes — ADPIE, safety, and core clinical skills
- 6-Week NCLEX Study Plan — weekly review goals and exam-day strategy