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  • BMJ study questions...

BMJ study questions blood pressure drug guidance based on age and ethnicity

Written By : Hina Zahid |Medically Reviewed By : Dr. Kamal Kant Kohli Published On 2020-11-26T15:45:07+05:30  |  Updated On 26 Nov 2020 3:45 PM IST
BMJ study questions blood pressure drug guidance based on age and ethnicity
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High blood pressure, or hypertension, affects more than one in four adults globally and is a major modifiable risk factor for morbidity and mortality. Internationally, guideline based approaches to pharmacotherapy for hypertension have been adopted to simplify clinical practice and improve blood pressure control.

Researchers have found in a new study that there was no evidence to support differing advice according to age and ethnicity. Current UK guidance on drug treatment for high blood pressure - which differs depending on a patient's age and ethnicity - could be simplified in line with other international guidelines, suggests the study published by The BMJ.

The results show similar reductions in blood pressure for three major drug types in people of all ages and ethnicity, suggesting that other factors might be better used to guide drug choice.

High blood pressure, or hypertension, affects more than one in four adults globally and is a major risk factor for illness and death.

Excluding people with diabetes, current guidelines from the National Institute for Health and Care Excellence (NICE) recommend calcium channel blockers (CCBs) for those aged 55 and older and for people of black African or African-Caribbean family ethnicity, and angiotensin converting enzyme inhibitors (ACEIs) or angiotensin receptor blockers (ARBs) for non-black people younger than 55.

This advice is based on a view that black people and older people have different causes of high blood pressure, and lower levels of renin (a protein that regulates blood pressure and fluid balance), resulting in drugs that work on this particular pathway being better at reducing blood pressure in these populations.

But since the current guidance was developed in the early 2000s, new evidence has emerged, leading some to question whether recommendations based on age and ethnicity actually translate to greater reductions in blood pressure in current routine care.

To find out, researchers at the London School of Hygiene & Tropical Medicine used UK primary care and hospital records to identify over 150,000 new users of hypertension drugs (CCBs, ACEIs/ARBs and thiazides), without diabetes, from 2007 to 2017.

After taking account of factors that could influence treatment choice or response, such as age, sex, smoking, alcohol use, weight (BMI) and underlying conditions, the researchers found similar reductions in blood pressure associated with both CCBs, and ACEIs/ARBs in people aged above and below 55.

In further analyses, they found that CCBs were associated with greater reductions in blood pressure than ACEIs/ARBs, but only in people aged 75 and older.

This was a large study using high quality UK primary care data, but the authors do highlight some limitations, such as not being able to analyse patients' adherence to their drugs and small numbers of black people included in the study.

Nevertheless, the researchers conclude that starting ACEIs/ARBs and CCBs was associated with similar reductions in blood pressure in people aged above and below 55, suggesting that age might not be the best factor to determine drug choice.

"Our results suggest that the current UK algorithmic approach to first line treatment for hypertension might not lead to greater reductions in blood pressure and could be simplified," they write.

"Moving towards a choice of any of the three major hypertension drug classes with suggested compelling indications for their use would align the UK with international guidance, in particular with regard to age.

https://www.bmj.com/content/371/bmj.m4080


the bmjblood pressurehypertensiondiabetesBP drugs
Source : The BMJ
Hina Zahid
Hina Zahid

    Hina Zahid Joined Medical Dialogue in 2017 with a passion to work as a Reporter. She coordinates with various national and international journals and association and covers all the stories related to Medical guidelines, Medical Journals, rare medical surgeries as well as all the updates in the medical field. Email: editorial@medicaldialogues.in. Contact no. 011-43720751

    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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