Trauma-Associated Severe Haemorrhage (TASH) Score: Clinical Guide

Overview

Calculates the TASH score to estimate risk of massive transfusion after severe trauma. The calculator is intended to make the underlying equation transparent while preserving the requirement for clinical assessment and source-data verification.

Clinical Significance

Higher TASH scores indicate increasing probability of massive transfusion in the original severe-trauma cohort. The score should support, not delay, activation of an established major-haemorrhage protocol.

When to Use

• Estimate early massive-transfusion risk after severe trauma.
• Use initial values obtained before substantial resuscitation when possible.
• Combine with active bleeding, physiology and local protocol triggers.

How It Is Calculated

• Weighted points are assigned for sex, haemoglobin, base excess, systolic pressure, heart rate, FAST and complex long-bone or pelvic fracture.
• MedicalC validates required values, applies the stated equation and rounds only the displayed result.
• Review intermediate measurements and assumptions whenever the result appears discordant with the clinical picture.

Interpretation

• Higher TASH scores indicate increasing probability of massive transfusion in the original severe-trauma cohort. The score should support, not delay, activation of an established major-haemorrhage protocol.
• Interpret trends only when the same technique, units and clinical conditions are reasonably comparable.

Worked Example

Enter the required measurements in the displayed units. MedicalC applies: Weighted points are assigned for sex, haemoglobin, base excess, systolic pressure, heart rate, FAST and complex long-bone or pelvic fracture. Confirm the result against the original observations before using it in a clinical decision.

Patient Considerations

• Consider age, body size, pregnancy, organ support, medication, rhythm, ventilation, measurement conditions and acute physiological change where relevant.
• Use the earliest reliable values for prognostic trauma scores unless the score definition specifies otherwise.
• Repeat calculations only when a changed result could influence care and the source data remain valid.

Limitations

• Definitions of massive transfusion and treatment practice have evolved.
• The score is more complex than simple activation tools.
• External calibration varies.

Clinical Pearls

• Treat the calculator as a transparent equation, not an autonomous recommendation.
• Record the exact time and method of important measurements.
• Resolve a clinically implausible result by checking inputs before assuming unusual physiology.

Common Mistakes

• Entering values in the wrong unit.
• Combining measurements obtained at different clinical time points.
• Applying a published threshold outside its validated population or setting.
• Allowing a score to delay urgent treatment.

Evidence Base

The calculator implements the stated published or established relationship. Principal source: Yücel N, et al. TASH score: probability of mass transfusion as surrogate for life-threatening haemorrhage after multiple trauma. J Trauma. 2006.

References

1. Yücel N, et al. TASH score: probability of mass transfusion as surrogate for life-threatening haemorrhage after multiple trauma. J Trauma. 2006. — Primary publication, authoritative guideline or recognised specialty source.