Inter-arm blood pressure difference and cardiovascular risk estimation in primary care: a pilot study

Background: Systolic inter-arm differences (IAD) in blood pressure (BP) contribute independently to cardiovascular risk estimates. This can be used to refine predicted risk and guide personalised interventions. Aim: To model the effect of accounting for IAD in cardiovascular risk estimation in a pri...

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Main Authors: Sinead T J McDonagh, Ben Norris, A Jayne Fordham, Maria R Greenwood, Suzanne H Richards, John L Campbell, Christopher E Clark
Format: Article
Language:English
Published: Royal College of General Practitioners 2022-09-01
Series:BJGP Open
Subjects:
Online Access:https://bjgpopen.org/content/6/3/BJGPO.2021.0242
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author Sinead T J McDonagh
Ben Norris
A Jayne Fordham
Maria R Greenwood
Suzanne H Richards
John L Campbell
Christopher E Clark
author_facet Sinead T J McDonagh
Ben Norris
A Jayne Fordham
Maria R Greenwood
Suzanne H Richards
John L Campbell
Christopher E Clark
author_sort Sinead T J McDonagh
collection DOAJ
description Background: Systolic inter-arm differences (IAD) in blood pressure (BP) contribute independently to cardiovascular risk estimates. This can be used to refine predicted risk and guide personalised interventions. Aim: To model the effect of accounting for IAD in cardiovascular risk estimation in a primary care population free of pre-existing cardiovascular disease. Design & setting: A cross-sectional analysis of people aged 40–75 years attending NHS Health Checks in one general practice in England. Method: Simultaneous bilateral BP measurements were made during health checks. QRISK2, atherosclerotic cardiovascular disease (ASCVD), and Framingham cardiovascular risk scores were calculated before and after adjustment for IAD using previously published hazard ratios. Reclassification across guideline-recommended intervention thresholds was analysed. Results: Data for 334 participants were analysed. Mean (standard deviation) QRISK2, ASCVD, and Framingham scores were 8.0 (6.9), 6.9 (6.5), and 10.7 (8.1), respectively, rising to 8.9 (7.7), 7.1 (6.7), and 11.2 (8.5) after adjustment for IAD. Thirteen (3.9%) participants were reclassified from below to above the 10% QRISK2 threshold, three (0.9%) for the ASCVD 10% threshold, and nine (2.7%) for the Framingham 15% threshold. Conclusion: Knowledge of IAD can be used to refine cardiovascular risk estimates in primary care. By accounting for IAD, recommendations of interventions for primary prevention of cardiovascular disease can be personalised and treatment offered to those at greater than average risk. When assessing elevated clinic BP readings, both arms should be measured to allow fuller estimation of cardiovascular risk.
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spelling doaj.art-201aca4e6b444e39af3ba428ee5657412022-12-22T01:48:00ZengRoyal College of General PractitionersBJGP Open2398-37952022-09-016310.3399/BJGPO.2021.0242Inter-arm blood pressure difference and cardiovascular risk estimation in primary care: a pilot studySinead T J McDonagh0Ben Norris1A Jayne Fordham2Maria R Greenwood3Suzanne H Richards4John L Campbell5Christopher E Clark6Primary Care Research Group, Institute of Health Services Research, University of Exeter Medical School, College of Medicine & Health, Exeter, UKAmicus Health - Clare House Surgery, Tiverton, UKMid Devon Medical Practice, Witheridge Medical Centre, Tiverton, UKMid Devon Medical Practice, Witheridge Medical Centre, Tiverton, UKLeeds Institute of Health Sciences, School of Medicine, University of Leeds, Leeds, UKPrimary Care Research Group, Institute of Health Services Research, University of Exeter Medical School, College of Medicine & Health, Exeter, UKPrimary Care Research Group, Institute of Health Services Research, University of Exeter Medical School, College of Medicine & Health, Exeter, UKBackground: Systolic inter-arm differences (IAD) in blood pressure (BP) contribute independently to cardiovascular risk estimates. This can be used to refine predicted risk and guide personalised interventions. Aim: To model the effect of accounting for IAD in cardiovascular risk estimation in a primary care population free of pre-existing cardiovascular disease. Design & setting: A cross-sectional analysis of people aged 40–75 years attending NHS Health Checks in one general practice in England. Method: Simultaneous bilateral BP measurements were made during health checks. QRISK2, atherosclerotic cardiovascular disease (ASCVD), and Framingham cardiovascular risk scores were calculated before and after adjustment for IAD using previously published hazard ratios. Reclassification across guideline-recommended intervention thresholds was analysed. Results: Data for 334 participants were analysed. Mean (standard deviation) QRISK2, ASCVD, and Framingham scores were 8.0 (6.9), 6.9 (6.5), and 10.7 (8.1), respectively, rising to 8.9 (7.7), 7.1 (6.7), and 11.2 (8.5) after adjustment for IAD. Thirteen (3.9%) participants were reclassified from below to above the 10% QRISK2 threshold, three (0.9%) for the ASCVD 10% threshold, and nine (2.7%) for the Framingham 15% threshold. Conclusion: Knowledge of IAD can be used to refine cardiovascular risk estimates in primary care. By accounting for IAD, recommendations of interventions for primary prevention of cardiovascular disease can be personalised and treatment offered to those at greater than average risk. When assessing elevated clinic BP readings, both arms should be measured to allow fuller estimation of cardiovascular risk.https://bjgpopen.org/content/6/3/BJGPO.2021.0242blood pressure determinationhypertensionheart disease risk factorsprimary health caremass screeninggeneral practitioners
spellingShingle Sinead T J McDonagh
Ben Norris
A Jayne Fordham
Maria R Greenwood
Suzanne H Richards
John L Campbell
Christopher E Clark
Inter-arm blood pressure difference and cardiovascular risk estimation in primary care: a pilot study
BJGP Open
blood pressure determination
hypertension
heart disease risk factors
primary health care
mass screening
general practitioners
title Inter-arm blood pressure difference and cardiovascular risk estimation in primary care: a pilot study
title_full Inter-arm blood pressure difference and cardiovascular risk estimation in primary care: a pilot study
title_fullStr Inter-arm blood pressure difference and cardiovascular risk estimation in primary care: a pilot study
title_full_unstemmed Inter-arm blood pressure difference and cardiovascular risk estimation in primary care: a pilot study
title_short Inter-arm blood pressure difference and cardiovascular risk estimation in primary care: a pilot study
title_sort inter arm blood pressure difference and cardiovascular risk estimation in primary care a pilot study
topic blood pressure determination
hypertension
heart disease risk factors
primary health care
mass screening
general practitioners
url https://bjgpopen.org/content/6/3/BJGPO.2021.0242
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