The TASH score calculator evaluates the risk of needing a massive transfusion for patients who have suffered a severe injury. To compute this score, it gathers inputs related to the patient's condition, assigns numerical values based on predefined criteria, and calculates a total score, which then determines the probability of requiring a massive transfusion.

The calculator collects the following inputs:

1. Sex (Female = 0, Male = 1)
2. Heart rate (> 120 bpm = 2, <= 120 bpm = 0)
3. Systolic blood pressure in mmHg (< 100 = 4, < 120 = 1, >= 120 = 0)
4. Hemoglobin in g/dL (< 7 = 8, < 9 = 6, < 10 = 4, < 11 = 3, < 12 = 2, >= 12 = 0)
5. Base excess in mmol/L (< -10 = 4, < -6 = 3, < -2 = 1, >= -2 = 0)
6. Presence of free intraabdominal fluid (Yes = 3, No = 0)
7. Clinically unstable pelvic fracture (Yes = 6, No = 0)
8. Open or dislocated femur fracture (Yes = 3, No = 0)

Each input option is translated into a score according to the criteria. The scores from these inputs are summed to determine the total TASH score.

The total score provides an interpretation as follows:

| Total Score | Probability Interpretation                     |
|-------------|------------------------------------------------|
| <= 8        | Probability for massive transfusion is < 5%    |
| 9           | Probability for massive transfusion is 6%      |
| 10          | Probability for massive transfusion is 8%      |
| 11          | Probability for massive transfusion is 11%     |
| 12          | Probability for massive transfusion is 14%     |
| 13          | Probability for massive transfusion is 18%     |
| 14          | Probability for massive transfusion is 23%     |
| 15          | Probability for massive transfusion is 29%     |
| 16          | Probability for massive transfusion is 35%     |
| 17          | Probability for massive transfusion is 43%     |
| 18          | Probability for massive transfusion is 50%     |
| 19          | Probability for massive transfusion is 57%     |
| 20          | Probability for massive transfusion is 65%     |
| 21          | Probability for massive transfusion is 71%     |
| 22          | Probability for massive transfusion is 77%     |
| 23          | Probability for massive transfusion is 82%     |
| >= 24       | Probability for massive transfusion is > 85%   |

This process ultimately yields both a numerical score indicating the severity of injury and an associated likelihood of needing massive transfusion, facilitating informed clinical decision-making.

The Trauma Associated Severe Hemorrhage (TASH) score is a clinical tool designed for predicting the need for massive transfusion in patients with severe injury. The primary components of the TASH score include patient's sex, heart rate, systolic blood pressure, hemoglobin level, base excess, presence of free intraabdominal fluid, presence of clinically unstable pelvic fracture, and presence of open or dislocated femur fracture. Each component is assigned a specific value based on the severity or presence of the condition, with higher values indicating a greater likelihood of requiring massive transfusion. The TASH score is particularly useful in emergency settings where rapid decision-making is crucial for patient survival.

TASH score for massive transfusion after severe injury

Revalidation and update of the TASH-Score: a scoring system to predict the probability for massive transfusion as a surrogate for life-threatening haemorrhage after severe injury.