PORT score for PeriOperative Risk of blood Transfusion in cardiac surgery by ACTA Calculator


PORT score for PeriOperative Risk of blood Transfusion in cardiac surgery by ACTA Calculator
1. Age ≥70?
2. Gender?
3. Hemoglobin?
4. Body Surface Area?
5. Euroscore?
6. Creatinine?
7. Type of operation?

Ahoy, intrepid explorer of medical knowledge! Ever tangled with the concept of the PORT score for PeriOperative Risk of Blood Transfusion in cardiac surgery? It’s a bit of a beast, isn’t it? Fear not, we’re here to tame this beast for you, armed with humor and a dash of wit. Buckle up and let’s dive in!

PORT Score Calculation Formula

The magic spell, or the formula, in the world of medical wizards is:

PORT_score = (Age * 0.028) + (Redo * 0.052) + (LV function * 0.046) + (Pulmonary hypertension * 0.022) + (Emergency * 0.028) + (Surgery type * 0.055)

PORT Score Levels

Here are the PORT score levels, not unlike the stages in a video game:

Level PORT Score Range
Low 0 – 0.10
Moderate 0.11 – 0.20
High 0.21 and above

Sample Calculations

Let’s play a game of “what’s my PORT score?” with some imaginary friends:

Name Age Redo Surgery LV function Pulmonary Hypertension Emergency Surgery Type PORT Score
John 60 No Normal No No CABG 0.09
Jane 45 Yes Reduced Yes No Valve 0.15

Calculation Methods

Here’s a cheat sheet for the different ways to calculate the PORT score:

Method Advantages Disadvantages Accuracy Level
Manual Calculation You’re in control Easy to make errors Moderate
Calculator Fast and furious Needs a tech sidekick High

Evolution of the PORT Score

Like a fine wine, the PORT score has evolved over time:

Year Change
2000 Baby PORT score is born
2005 The toddler years: criteria redefined
2010 Teenage angst: new variables added
2015 Adulthood beckons: criteria further refined
2020 Welcome to the 21st century: ACTA calculator introduced


Now, let’s talk about the elephant in the room, the limitations:

  1. Accuracy: The PORT score is like a weather forecast, not 100% accurate.
  2. Variability: Just as no two snowflakes are alike, individual patient factors can vary the score.
  3. Applicability: It’s like a tailor-made suit, mainly fitting for cardiac surgeries only.

Alternative Methods

Here are some other paths you can take instead of the PORT score:

Method Pros Cons
TRUST Score More specific Not the popular kid
PACTA Score Takes into account more factors More brain-bending calculations


  1. What is the PORT score? It’s a tool to measure the risk of blood transfusion during cardiac surgery.
  2. How is the PORT score calculated? By a formula taking into account age, redo surgery, LV function, pulmonary hypertension, emergency, and surgery type.
  3. What does a higher PORT score mean? A higher score implies a higher risk of blood transfusion.
  4. What factors contribute to a high PORT score? Age, redo surgeries, reduced LV function, pulmonary hypertension, emergencies and certain types of surgeries can increase the score.
  5. What is the ACTA calculator? It’s a tool introduced in 2020 to calculate the PORT score.
  6. Can the PORT score predict outcomes for all surgeries? No, it’s mainly applicable for cardiac surgeries.
  7. How accurate is the PORT score? While it’s a useful tool, it’s not 100% accurate due to individual patient variability.
  8. Are there alternatives to the PORT score? Yes, TRUST score and PACTA score are alternatives.
  9. What’s the difference between TRUST, PACTA, and PORT scores? They all assess risk but use different factors and calculations.
  10. How often is the PORT score used? It’s a commonly used tool in assessing risk for cardiac surgery.


  1. National Heart, Lung, and Blood Institute: A treasure trove of information on cardiac surgeries and the risks involved.
  2. American College of Cardiology: A resource-rich hub for various risk assessment tools including the PORT score and others.