Patient Blood Management (PBM) & Coagulation

Overview

Patient Blood Management (PBM) & Coagulation is a specialised service within the Centre of Transfusion Medicine that focuses on safe, appropriate, and patient-centred use of blood and blood components. It helps optimise the patient’s own blood, reduce avoidable blood loss, manage bleeding disorders, and guide transfusion decisions when blood products are truly needed.

PBM is especially important for patients undergoing major surgery, trauma care, cancer treatment, childbirth, critical care, and treatment for anaemia or bleeding disorders. The goal is to improve patient outcomes while ensuring responsible use of blood resources.

What Is Patient Blood Management & Coagulation?

Patient Blood Management is an evidence-based approach that aims to improve blood health and reduce unnecessary transfusions. It focuses on three key areas: treating anaemia, minimising blood loss, and improving the body’s ability to tolerate anaemia safely.

Coagulation care focuses on how well the blood clots and how bleeding or clotting problems should be managed. This includes testing, interpretation, transfusion planning, and support during surgery, trauma, liver disease, obstetric emergencies, or anticoagulant use.

Common areas of care include:

• Anaemia screening and correction before surgery

• Safe and appropriate blood transfusion planning

• Management of bleeding risk before procedures

• Coagulation testing and interpretation

• Guidance on red cells, platelets, plasma, and cryoprecipitate use

• Support for major bleeding, trauma, obstetric haemorrhage, and ICU patients

• Anticoagulant reversal guidance in selected cases

• Blood conservation strategies during and after surgery

Causes and Risk Factors

PBM and coagulation support may be needed when a patient has anaemia, expected blood loss, abnormal clotting, or high transfusion risk.

Common causes and risk factors include:

• Iron deficiency anaemia

• Vitamin B12 or folate deficiency

• Chronic kidney disease

• Cancer or chemotherapy-related anaemia

• Heavy menstrual bleeding or gastrointestinal bleeding

• Major surgery or trauma

• Liver disease affecting clotting factors

• Low platelet count or platelet dysfunction

• Use of blood thinners or antiplatelet medicines

• Inherited bleeding disorders

• Obstetric bleeding risk

• Critical illness or sepsis

• Previous transfusion reactions or multiple transfusions

Identifying these risks early allows the team to plan safer treatment and reduce emergency transfusion needs.

Symptoms

Patients may need PBM or coagulation evaluation if they have symptoms of anaemia, bleeding tendency, or clotting abnormalities.

Common symptoms include:

• Fatigue, weakness, or dizziness

• Shortness of breath on exertion

• Pale skin

• Fast heartbeat or palpitations

• Easy bruising

• Frequent nosebleeds or gum bleeding

• Heavy or prolonged menstrual bleeding

• Blood in stool or urine

• Prolonged bleeding after injury, dental work, or surgery

• Swelling, pain, or redness in a limb if clotting is suspected

• History of excessive bleeding during childbirth or previous surgery

Emergency care is needed for severe bleeding, vomiting blood, black stools, chest pain, fainting, sudden breathlessness, confusion, or signs of shock.

Diagnosis

Diagnosis begins with a detailed history of bleeding, anaemia, previous transfusions, medicines, surgery, pregnancy history, and family history. The team may also review previous reports and coordinate with surgical, medical, obstetric, oncology, or critical care teams.

Common tests and assessments include:

• Complete blood count

• Haemoglobin and red cell indices

• Iron studies, ferritin, vitamin B12, and folate levels

• Platelet count and platelet function assessment when needed

• PT, INR, aPTT, fibrinogen, and D-dimer testing

• Liver and kidney function tests

• Blood group and antibody screening

• Crossmatching when transfusion is likely

• Viscoelastic testing such as TEG or ROTEM in selected major bleeding cases

• Review of blood thinner or antiplatelet medicine use

These results help guide whether the patient needs iron therapy, vitamin correction, blood components, clotting support, or specialist evaluation.

Treatment Options

Treatment is personalised according to the patient’s condition, haemoglobin level, bleeding risk, clotting status, and urgency of surgery or illness.

PBM and coagulation care may include:

• Oral or intravenous iron therapy for iron deficiency

• Vitamin B12 or folate replacement

• Erythropoiesis-stimulating medicines in selected patients

• Planning surgery after correcting anaemia when medically possible

• Restrictive and evidence-based transfusion decisions

• Single-unit red cell transfusion with reassessment in stable patients when appropriate

• Platelet, plasma, cryoprecipitate, or fibrinogen support when clinically indicated

• Tranexamic acid in selected bleeding or surgical cases

• Cell salvage or blood conservation strategies in selected surgeries

• Anticoagulant reversal planning when required

• Point-of-care coagulation-guided therapy for major bleeding

• Monitoring for transfusion reactions and treatment response

The aim is not to avoid transfusion at all costs, but to give the right blood component to the right patient, at the right time, and for the right reason.

Prevention and Outlook

Many transfusion-related risks can be reduced through early anaemia detection, preoperative optimisation, careful surgical planning, blood loss reduction, appropriate coagulation testing, and evidence-based transfusion practice.

Patients preparing for major surgery should ideally be screened for anaemia and bleeding risk in advance. With proper PBM and coagulation support, many patients have fewer transfusions, fewer complications, better recovery, and improved overall safety.

Frequently Asked Questions

1. What is Patient Blood Management?
   Patient Blood Management is a patient-centred approach that improves blood health, treats anaemia, reduces blood loss, and supports safe transfusion decisions.

2. Does PBM mean I will not receive blood?
   No. PBM does not mean avoiding transfusion when it is needed. It means using blood safely and appropriately while correcting treatable causes of anaemia or bleeding.

3. Why is anaemia treated before surgery?
   Anaemia before surgery can increase the risk of complications and transfusion. Treating it early may improve recovery and reduce avoidable blood use.

4. is coagulation testing?
   Coagulation testing checks how well the blood clots. It helps doctors assess bleeding risk and decide whether plasma, platelets, fibrinogen, or other treatments are needed.

5. Who may need PBM support?
   Patients undergoing major surgery, trauma care, childbirth, cancer treatment, ICU care, or those with anaemia, bleeding disorders, liver disease, or blood thinner use may benefit.

6. Are blood transfusions safe?
   Blood transfusions are generally safe when properly tested and clinically indicated, but they still carry some risks. PBM helps ensure transfusions are used only when the expected benefit outweighs the risk.