haematology anaesthesia
Blood Volume Calculation (Nadler Formula)
Estimates total blood volume using the Nadler formula based on height, weight, and sex. Used for perioperative planning and transfusion decision-making.
Score interpretation
Below Average 0–3.5
Below average total blood volume
→ Adjust transfusion thresholds and volumes accordingly
Normal Range 3.5–6
Normal total blood volume for stated demographics
→ Use calculated volume for perioperative planning
Above Average 6–99
Above average total blood volume
→ Use calculated volume for planning; larger patients may tolerate greater blood loss
Interpretation bands for the Blood Volume. Apply clinical judgement and local guidance.
References
- Nadler SB, Hidalgo JH, Bloch T. Prediction of blood volume in normal human adults. Surgery. 1962;51(2):224–232.
Related
Curated clinical cross-links plus same-class fallbacks.
Calculators
- Corrected Count Increment (CCI) for Platelet Transfusion · Transfusion Medicine
- ABC Score for Massive Transfusion · Transfusion Medicine
- Maximum Allowable Blood Loss · Transfusion Medicine
- Sickle Cell Exchange Transfusion Volume · Transfusion Medicine
- Cryoprecipitate Dose Calculator for Fibrinogen Replacement · Transfusion Medicine
- Fresh Frozen Plasma (FFP) Dose Calculator · Transfusion Medicine
Drugs
- Ketamine (Anaesthesia/Sedation) · Dissociative Anaesthetic (NMDA Receptor Antagonist)
- Morphine (IV/IM — Anaesthesia/ICU) · Strong Opioid Analgesic
- Suxamethonium (Anaesthesia/RSI) · Depolarising Neuromuscular Blocking Agent
- Rocuronium (Anaesthesia/RSI) · Non-Depolarising Neuromuscular Blocking Agent
- Fentanyl (IV — Anaesthesia/ICU) · Opioid Analgesic (Short-Acting)
- Lidocaine (IV — Anaesthesia/ICU) · Local Anaesthetic / Antiarrhythmic (Class Ib)
Pathways
- Major Haemorrhage / Massive Transfusion · BCSH; RCOA; RCEM; RCS — BCSH Guidelines
- Anaemia Investigation · BSH / NICE
- Splenomegaly Workup · BSH; BMJ Best Practice
- Deep Vein Thrombosis Diagnosis and Treatment · NICE CG144 / NICE NG158
- Sickle Cell Crisis · BSH 2021 / BCSH
- Neutropenic Sepsis · NICE CG151 2012 / ESMO
Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.