Impact of multiple cardiovascular medications on mortality after an incidence of ischemic stroke or transient ischemic attack

Abstract Background To manage the risk factors and to improve clinical outcomes, patients with stroke commonly receive multiple cardiovascular medications. However, there is a lack of evidence on the optimum combination of medication therapy in the primary care setting after ischemic stroke. Therefo...

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Main Authors: Tian-Tian Ma, Ian C. K. Wong, Cate Whittlesea, Kenneth K. C. Man, Wallis Lau, Zixuan Wang, Ruth Brauer, Thomas M. MacDonald, Isla S. Mackenzie, Li Wei
Format: Article
Language:English
Published: BMC 2021-02-01
Series:BMC Medicine
Subjects:
Online Access:https://doi.org/10.1186/s12916-021-01900-1
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author Tian-Tian Ma
Ian C. K. Wong
Cate Whittlesea
Kenneth K. C. Man
Wallis Lau
Zixuan Wang
Ruth Brauer
Thomas M. MacDonald
Isla S. Mackenzie
Li Wei
author_facet Tian-Tian Ma
Ian C. K. Wong
Cate Whittlesea
Kenneth K. C. Man
Wallis Lau
Zixuan Wang
Ruth Brauer
Thomas M. MacDonald
Isla S. Mackenzie
Li Wei
author_sort Tian-Tian Ma
collection DOAJ
description Abstract Background To manage the risk factors and to improve clinical outcomes, patients with stroke commonly receive multiple cardiovascular medications. However, there is a lack of evidence on the optimum combination of medication therapy in the primary care setting after ischemic stroke. Therefore, this study aimed to investigate the effect of multiple cardiovascular medications on long-term survival after an incident stroke event (ischemic stroke or transient ischemic attack (TIA)). Methods This study consisted of 52,619 patients aged 45 and above with an incident stroke event between 2007 and 2016 in The Health Improvement Network database. We estimated the risk of all-cause mortality in patients with multiple cardiovascular medications versus monotherapy using a marginal structural model. Results During an average follow-up of 3.6 years, there were 9230 deaths (7635 in multiple cardiovascular medication groups and 1595 in the monotherapy group). Compared with patients prescribed monotherapy only, the HRs of mortality were 0.82 (95% CI 0.75–0.89) for two medications, 0.65 (0.59–0.70) for three medications, 0.61 (0.56–0.67) for four medications, 0.60 (0.54–0.66) for five medications and 0.66 (0.59–0.74) for ≥ six medications. Patients with any four classes of antiplatelet agents (APAs), lipid-regulating medications (LRMs), angiotensin-converting enzyme inhibitors (ACEIs)/angiotensin receptor blockers (ARBs), beta-blockers, diuretics and calcium channel blockers (CCBs) had the lowest risk of mortality (HR 0.51, 95% CI 0.46–0.57) versus any one class. The combination containing APAs, LRMs, ACEIs/ARBs and CCBs was associated with a 61% (95% CI 53–68%) lower risk of mortality compared with APAs alone. Conclusion Our results suggested that combination therapy of four or five cardiovascular medications may be optimal to improve long-term survival after incident ischemic stroke or TIA. APAs, LRMs, ACEIs/ARBs and CCBs were the optimal constituents of combination therapy in the present study.
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spelling doaj.art-3b3935a9a975408992eba0e79701c1852022-12-21T21:56:09ZengBMCBMC Medicine1741-70152021-02-0119111110.1186/s12916-021-01900-1Impact of multiple cardiovascular medications on mortality after an incidence of ischemic stroke or transient ischemic attackTian-Tian Ma0Ian C. K. Wong1Cate Whittlesea2Kenneth K. C. Man3Wallis Lau4Zixuan Wang5Ruth Brauer6Thomas M. MacDonald7Isla S. Mackenzie8Li Wei9Research Department of Practice and Policy, School of Pharmacy, University College LondonResearch Department of Practice and Policy, School of Pharmacy, University College LondonResearch Department of Practice and Policy, School of Pharmacy, University College LondonResearch Department of Practice and Policy, School of Pharmacy, University College LondonResearch Department of Practice and Policy, School of Pharmacy, University College LondonResearch Department of Practice and Policy, School of Pharmacy, University College LondonResearch Department of Practice and Policy, School of Pharmacy, University College LondonMedicines Monitoring Unit (MEMO Research) and Hypertension Research Centre, University of DundeeMedicines Monitoring Unit (MEMO Research) and Hypertension Research Centre, University of DundeeResearch Department of Practice and Policy, School of Pharmacy, University College LondonAbstract Background To manage the risk factors and to improve clinical outcomes, patients with stroke commonly receive multiple cardiovascular medications. However, there is a lack of evidence on the optimum combination of medication therapy in the primary care setting after ischemic stroke. Therefore, this study aimed to investigate the effect of multiple cardiovascular medications on long-term survival after an incident stroke event (ischemic stroke or transient ischemic attack (TIA)). Methods This study consisted of 52,619 patients aged 45 and above with an incident stroke event between 2007 and 2016 in The Health Improvement Network database. We estimated the risk of all-cause mortality in patients with multiple cardiovascular medications versus monotherapy using a marginal structural model. Results During an average follow-up of 3.6 years, there were 9230 deaths (7635 in multiple cardiovascular medication groups and 1595 in the monotherapy group). Compared with patients prescribed monotherapy only, the HRs of mortality were 0.82 (95% CI 0.75–0.89) for two medications, 0.65 (0.59–0.70) for three medications, 0.61 (0.56–0.67) for four medications, 0.60 (0.54–0.66) for five medications and 0.66 (0.59–0.74) for ≥ six medications. Patients with any four classes of antiplatelet agents (APAs), lipid-regulating medications (LRMs), angiotensin-converting enzyme inhibitors (ACEIs)/angiotensin receptor blockers (ARBs), beta-blockers, diuretics and calcium channel blockers (CCBs) had the lowest risk of mortality (HR 0.51, 95% CI 0.46–0.57) versus any one class. The combination containing APAs, LRMs, ACEIs/ARBs and CCBs was associated with a 61% (95% CI 53–68%) lower risk of mortality compared with APAs alone. Conclusion Our results suggested that combination therapy of four or five cardiovascular medications may be optimal to improve long-term survival after incident ischemic stroke or TIA. APAs, LRMs, ACEIs/ARBs and CCBs were the optimal constituents of combination therapy in the present study.https://doi.org/10.1186/s12916-021-01900-1StrokeCombination drug therapyMortalityCohort study
spellingShingle Tian-Tian Ma
Ian C. K. Wong
Cate Whittlesea
Kenneth K. C. Man
Wallis Lau
Zixuan Wang
Ruth Brauer
Thomas M. MacDonald
Isla S. Mackenzie
Li Wei
Impact of multiple cardiovascular medications on mortality after an incidence of ischemic stroke or transient ischemic attack
BMC Medicine
Stroke
Combination drug therapy
Mortality
Cohort study
title Impact of multiple cardiovascular medications on mortality after an incidence of ischemic stroke or transient ischemic attack
title_full Impact of multiple cardiovascular medications on mortality after an incidence of ischemic stroke or transient ischemic attack
title_fullStr Impact of multiple cardiovascular medications on mortality after an incidence of ischemic stroke or transient ischemic attack
title_full_unstemmed Impact of multiple cardiovascular medications on mortality after an incidence of ischemic stroke or transient ischemic attack
title_short Impact of multiple cardiovascular medications on mortality after an incidence of ischemic stroke or transient ischemic attack
title_sort impact of multiple cardiovascular medications on mortality after an incidence of ischemic stroke or transient ischemic attack
topic Stroke
Combination drug therapy
Mortality
Cohort study
url https://doi.org/10.1186/s12916-021-01900-1
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