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Atrial fibrillation and human immunodeficiency virus type
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Atrial fibrillation and human immunodeficiency virus type‐1 infection_ a systematic review. Implications for anticoagulant and antiarrhythmic therapy
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This article has been accepted for publication and undergone full peer review but has not
been through the copyediting, typesetting, pagination and proofreading process which may
lead to differences between this version and the Version of Record. Please cite this article as
doi: 10.1111/bcp.13837
This article is protected by copyright. All rights reserved.
Atrial fibrillation and Human Immunodeficiency Virus type-1 infection: a systematic
review. Implications for anticoagulant and antiarrhythmic therapy.
Running title: Atrial fibrillation/flutter and HIV-1 infection
Daniele Pastori(1,2), Ivano Mezzaroma(3), Pasquale Pignatelli(1),
Francesco Violi(1), Gregory Y H Lip(2).
(1) Department of Internal Medicine and Medical Specialties, Sapienza University of Rome,
Rome, Italy.
(2) Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool
Heart & Chest Hospital, Liverpool, United Kingdom; and Aalborg Thrombosis Research
Unit, Department of Clinical Medicine, Aalborg University, Aalborg, Denmark;
(3) Department of Translational and Precision Medicine, Sapienza University of Rome,
Rome, Italy.
Corresponding Author
Professor Gregory Y.H. Lip.
gregory.lip@liverpool.ac.uk
Conflict of interest statements: none.
Word count: 2404.
Keywords: atrial fibrillation; atrial flutter; HIV-1; antiretroviral; stroke; anticoagulants.
This article is protected by copyright. All rights reserved.
Abstract
The prevalence and incidence of atrial fibrillation/flutter (AF/AFL) in patients with Human
Immunodeficiency Virus type-1 (HIV-1) infection have been poorly investigated. We
performed a systematic review using PubMed and Cochrane Database of Systematic
Reviews, and screening of references, searching for clinical studies reporting on the
association between HIV-1 infection and AF/AFL. We also summarised the main interactions
of antiretroviral agents with antithrombotic and antiarrhythmic drugs. We found a prevalence
of AF/AFL ranging from 2.0% to 5.13% in patients with HIV-1, with an incidence rate of
3.6/1,000 person-years. Low CD4+ count (<200-250 cells/mL) and high viral load were
predictors of AF/AFL. Regarding drugs interactions, nucleoside reverse transcriptase
inhibitors, integrase inhibitor and maraviroc have the lowest interactions with oral
anticoagulants. Among anticoagulants, dabigatran presents the most favourable profile. Most
of antiarrhythmic drugs interact with protease inhibitors, with beta blockers and diltiazem
having fewer interaction.
The few studies available studies suggest a non-negligible prevalence of AF/AFL in patients
with HIV-1 infection. Awareness of potential interactions with anticoagulation and
antiarrhythmic drugs is needed to offer optimal management in this population.
List of abbreviations
AF: atrial fibrillation; AFL: atrial flutter; ART: antiretroviral therapy; ATV: atazanavir;
COBI or c: cobicistat; CVD: cardiovascular disease; DRV: darunavir; HIV-1: Human
Immunodeficiency Virus type-1; IR: incidence rate; LPV: lopinavir; MI: myocardial
infarction; NNRTIs: non-nucleoside reverse transcriptase inhibitors; NOAC: non-vitamin K
This article is protected by copyright. All rights reserved.
direct oral anticoagulant; NRTI: nucleoside reverse transcriptase inhibitor; PI: protease
inhibitor; RTV or r: ritonavir; TPV: tipranavir; VKA: vitamin K antagonist.
1. Introduction: cardiovascular disease risk in HIV-1 infection
The availability of highly effective antiretroviral therapy (ART) has resulted in markedly
improved survival for people with Human Immunodeficiency Virus type-1 (HIV-1) infection.
While HIV-1 related mortality is declining, the incidence of new cases of HIV-1 infection
remains stable, resulting in a growing number of older adults living with HIV-1 infection[1].
As a consequence of the increased life expectancy, the effects of aging on HIV-1 infected
persons have begun to be evident. In particular, long-term effects of HIV-1 infection, ART
use, and traditional risk factors, may be significant contributors to the increased risk of
premature cardiovascular disease (CVD) described in this population.
A pathogenic relevant role in CVD risk development is played by the chronic immune
activation and inflammation caused by HIV-1 infection itself[2]. Indeed, monocytes are an
important source of inflammatory mediators that promote CVD, even in treated HIV-1
patients[3]. Moreover, low CD4+ T cell count and/or failure to restore normal CD4+ T cell
counts during ART have been associated with the occurrence of CVD and increased risk of
morbidity and mortality due to CV events[4].
In addition, several antiretroviral drugs, such as nucleoside reverse transcriptase inhibitors
(NRTIs) and protease inhibitors (PIs), could result in an altered fat redistribution that
characterizes the so-called ‘lipodystrophy syndrome’ (subcutaneous fat tissue atrophy in the
face, limbs and buttocks and/or lipo-accumulation in different body districts, i.e., neck, trunk,
abdomen and viscera)[5]. These fat alterations were frequently associated with several
metabolic and endocrine disorders similar to those present during the metabolic syndrome
This article is protected by copyright. All rights reserved.
(hypertriglyceridemia, low high-density lipoprotein cholesterol, and insulin resistance),
which are well known risk factors for CVD[6]. A dyslipidaemia induced by integrase
inhibitors has been also described, which could be considered a risk factor for increased
CVD[7].
Beside drugs, several pathophysiological alterations potentially contributing to the increased
CVD risk have been reported in association with HIV-1 infection. For instance, HIV-1
infected patients are characterized by increased oxidative stress[8], endothelial/vascular
dysfunction[9], and platelet activation[10], again all factors potentially contributing to the
atherosclerotic burden in HIV-1 patients[11].
Altogether these findings probably account for the increased risk of myocardial infarction
(MI) with an incidence rate (IR) for type 1 MI of 2.57 per 1000 person-years[12], and a
higher ischaemic stroke risk (IR of 2.79 per 1,000 person-years)[13] described in HIV+
patients. Nonetheless, the association between HIV-1 and atrial arrhythmias, such as atrial
fibrillation and atrial flutter (AF/AFL), has been scarcely investigated. HIV-1 patients have
been excluded from the randomised trials of stroke prevention, and thus, limited data are
available on stroke risk and appropriate thromboprophylaxis in such patients.
The aim of this systematic review was to summarize the available evidence on the risk of
AF/AFL during HIV-1 infection. We also focused on the implications for the management of
patients with concomitant AF/AFL and HIV-1, considering several drug-drug interactions of
ART with oral anticoagulants and antiarrhythmic drugs.
2. Systematic review of risk of AF/AFL in HIV-1.
Eligibility criteria for the systematic review
This article is protected by copyright. All rights reserved.
We included all original clinical research articles in English language with full text available.
In particular, all observational studies (both prospective and retrospective) reporting data on
the prevalence and/or incidence of AF/AFL in patients with HIV-1 were selected. We did not
include the following: (1) case reports, (2) editorials/comments/letters, (3) review articles.
Information sources and search strategy
We performed a systematic review of the literature searching MEDLINE via PubMed, and
Cochrane Database of Systematic Reviews, for a combination of the following keywords
“atrial fibrillation”, “HIV” and “atrial flutter”. The research strategy had no time restriction
and was performed according to PRISMA guidelines[14]. The screening of reference lists of
studies was also performed.
Study selection
The study selection was performed in multiple phases. In the first phase, potentially relevant
studies were obtained by combined searches of electronic databases using the selected above-
mentioned keywords. In the second phase, studies were reviewed and excluded by study
typology; thus, letters, editorial, case reports and comments were excluded. Then we
performed a detailed analysis of full-text articles to assess if they addressed the specific study
question (Supplemental Figure 1).
Data collection process
Two physicians (DP, IM) independently screened the titles and abstracts of manuscripts
identified through the database searches to identify studies potentially eligible for further
assessment. For each study we collected the following information: authors, year of
publication, study design, number of patients included, duration of follow-up, prevalence
and/or incidence of AF/AFL.
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