Dr Paddy Barrett
Dr Paddy Barrett

@Paddy_Barrett

8 Tweets 6 reads Nov 05, 2023
Almost EVERYONE will develop coronary artery disease at some point in life.
This significantly ⬆️ the risk of heart attack.
A Cardiac CT can tell:
If you have plaque & your degree of risk.
Here are 5 things you need to know about CAC scans.
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1. Everyone Starts Out With a CAC Score Of 0
But at some point you will likely convert to a score >0.
When you do is crucial.
It takes about 8-10 years to go from a score of 1->100.
So if you convert in your 30s your risk in your 40s just went ⬆️⬆️⬆️
2. A CAC Score >100 Suggests ⬆️ Risk
Over a 10 year time frame.
But for lifetime risk we always need to think beyond 10 years.
As CAC score increases:
Heart attack & Stroke risk increases.
As does All Cause Mortality
3. A CAC Score between 0-99 Needs To Be Taken In Context Of Age
A CAC score of 10 isn't particularly high.
But it is for younger people.
A CAC score of 10 for a 45 year old female is at the 97th percentile.
This person is laying down plaque WAY earlier than expected.
4. A CAC Score >300 Puts You In The Same Risk Category Of Someone Who Has Had A Prior Heart Attack
In general - the person at highest risk of a heart attack
Is the person who has had one before.
A CAC score >300 equates to the same risk.
Beware hidden risk.
5. Your CAC Score Is Highly Dependent On Your Lifestyle
When you convert from a 0 score to a score >0
Is tightly linked to your lifestyle factors:
Exercise
Sleep
Smoking
Weight etc.
Better lifestyle.
Delayed onset of coronary disease.
That's a wrap!
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Have to do it this way. Blame Elon ;)

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