Doctors usually decide who needs statins by looking at risk factors like cholesterol and blood pressure. A new trial, called CorCal Outcomes, tested a different method: using CT scans to check for calcium buildup in heart arteries.
This scan-based approach led to fewer people being told to take statins. It also resulted in much higher rates of people actually sticking with their medication.
Comparing Two Approaches
The CorCal Outcomes trial looked at two ways to decide if someone should start statins. Statins are medicines that lower cholesterol and help prevent heart problems like heart attacks and strokes.
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Start Your News DetoxOne method used traditional risk factors, like cholesterol levels and blood pressure. This is called the pooled cohort equations (PCE). The other method used a coronary artery calcium (CAC) scan. This scan uses CT imaging to find calcium deposits in the heart's arteries. These deposits are a direct sign of plaque buildup.
Dr. Joseph B. Muhlestein, the lead researcher, explained that many people have a heart attack without any prior warning. Statins are very good at preventing these events. However, there's a problem with how doctors assess risk and how well patients stick to their statin treatment.
Trial Results
The study included 5,772 people with an average age of 64. None of them had known heart disease or diabetes, and none were already taking statins.
Participants were randomly put into two groups. One group's statin recommendation was based on their traditional risk score. The other group's recommendation was based on their CAC scan results. Patients and their doctors made the final decision about treatment.
After about four years, major heart problems occurred in 2.7% of people in both groups. These problems included death, heart attack, stroke, and procedures to open blocked arteries.
Even though the event rates were the same, the study couldn't definitively prove that the scan-based method was just as good as the traditional one. This was because fewer heart problems happened than the researchers expected. This made it harder to compare the two methods statistically.
Statin Recommendations and Adherence
The two methods led to very different numbers of statin recommendations. The traditional risk factor group was advised to start statins more than three times as often as the CAC scan group.
However, people who were told to take statins based on their CAC scan results were much more likely to keep taking them. About 62% of the CAC group stuck with their medication, compared to only 23% of the traditional risk score group.
Dr. Muhlestein noted that while the study didn't prove the scan-based method was equal, it offered important insights. It showed that using CAC scores could make statin decisions more efficient and improve how well patients take their medicine. He suggested that these findings could help plan future trials to compare the two approaches more thoroughly.
