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  • Lancet study shows...

Lancet study shows potential benefits of statins in elderly, clears smoke around primary prevention in old age

Written By : dr. Abhimanyu Uppal |Medically Reviewed By : Dr. Kamal Kant Kohli Published On 2020-12-07T09:15:03+05:30  |  Updated On 7 Dec 2020 1:39 PM IST
Lancet study shows potential benefits of statins in elderly, clears smoke around primary prevention in old age
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Findings of historical studies have suggested that elevated LDL cholesterol is not associated with increased risk of myocardial infarction (MI) and atherosclerotic cardiovascular disease (ASCVD) in patients older than 70 years. But in a recently published study from The Lancet, adults aged 70-100 years with elevated LDL cholesterol had in fact the highest absolute risk of MI and ASCVD. This underscores the potential benefit of statins in this subgroup.


Also Read:Low-density lipoproteins cause atherosclerotic cardiovascular disease: 1, evidence from genetic, epidemiologic, and clinical studies—a consensus statement from the European Atherosclerosis Society Consensus Panel.

91,131 individuals aged 20–100 years from the Copenhagen General Population Study (CGPS) who did not have ASCVD or diabetes at baseline and who were not taking statins were included in this study published in November edition of The Lancet. Hazard ratios (HRs) and absolute event rates for MI and ASCVD were calculated, and the number needed to treat (NNT) in 5 years to prevent one event was estimated.


Also Read:Hypercholesterolemia and coronary heart disease in the elderly: a meta-analysis

Following results were derived over an average of 7.7 years of follow-up:

1. 1,515 individuals had a first MI, and 3,389 had ASCVD. The highest event rates were observed in those aged 80-100.

2. Each 1.0 mmol/L increase in LDL cholesterol was associated with an increased risk for MI in the total population (HR=1.34), but highest for those aged 70-100 years.

3. A similar association was seen for ASCVD risk, particularly those aged 70-100 years.

4. Among those with significantly elevated LDL (≥5.0 mmol/L LDL cholesterol) versus <3.0 mmol/L (<116 mg/dl), risk for MI was significant, including for those aged 80-100 years (HR, 2.99) and in those aged 70-79 years (HR, 1.82).

5. MI and ASCVD events per 1,000 person-years for every 1.0 mmol/L increase in LDL cholesterol were highest in individuals aged 70-100 years, with the number of events lower with younger age.

6. The number needed to treat (NNT) in 5 years to prevent one MI or ASCVD event if all people were given a moderate-intensity statin was lowest for individuals aged 70-100 years, with the NNT increasing with younger age.

Concluding the findings from this contemporary primary prevention cohort, elderly people with elevated LDL cholesterol had the highest absolute risk of MI and ASCVD and the lowest estimated NNT in 5 years to prevent one event.

This study is important for preventive strategies aimed at reducing the burden of cardiovascular diseases in the elderly and contradicts the previous studies that had side-lined the significance of LDL-cholesterol control in this population.

Source: Elevated LDL Cholesterol and Increased Risk of Myocardial Infarction and Atherosclerotic Cardiovascular Disease in Individuals Aged 70–100 Years: A Contemporary Primary Prevention Cohort. Lancet 2020; 396:1644-1652.

The article can be viewed from: https://www.thelancet.com/pdfs/journals/lancet/PIIS0140-6736(20)32233-9.pdf


preventive cardiologyThe Lancetstatinselderlycardiovascular disease riskgeriatric cardiology
dr. Abhimanyu Uppal
dr. Abhimanyu Uppal

    MBBS, MD , DM Cardiology

    Dr Abhimanyu Uppal completed his M. B. B. S and M. D. in internal medicine from the SMS Medical College in Jaipur. He got selected for D. M. Cardiology course in the prestigious G. B. Pant Institute, New Delhi in 2017. After completing his D. M. Degree he continues to work as Post DM senior resident in G. B. pant hospital. He is actively involved in various research activities of the department and has assisted and performed a multitude of cardiac procedures under the guidance of esteemed faculty of this Institute. He can be contacted at editorial@medicaldialogues.in.

    Dr. Kamal Kant Kohli
    Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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