hiv and the heart latest developments · 2015-10-14 · hiv and the heart – latest developments...
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HIV and the heart –
latest developments
Mahmoud U. Sani Bayero University Kano & Aminu Kano Teaching
Hospital, Kano state, Nigeria.
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Inflammation
Endothelial &
Immune Dysfunction
Coagulation& Platelet Reactivity
HIV
Conventional RF
Dyslipidemia, DM
HTN, Smoking
Obesity
Cardiometabolic Adverse
Effects of ART
CVD
HIV-Related CV Disease
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Figure 1. As the frequency of use of antiretroviral therapy, including PIs,
increased in HIV-infected patients, their mortality during this same time period
decreased.
Hsue P Y , Waters D D Circulation 2005;112:3947-3957
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Inflammation and Immune Activation
Gut
microbiome
Hypercoagulability Aging
HIV Infection
Hsue, P et al. The Journal of Infectious Disease. 2012; 13: S375-82.
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HIV-related CVD – Significant Mortality
• 1,876 deaths among 39,727 patients
• Non-AIDS related deaths accounted for 50.5%
• ~16% were due to CVD
13 HIV Cohorts
1996-2006
CVD
15.7%
Non-AIDS
infection
16.3%
Non-AIDS
Malignancy
23.5%
Violence,
Substance
abuse
15.4%
Liver-related
14.1%
Other
9.0% Respiratory
3.1%
Renal
3%
Antiretroviral Therapy Cohort Collaboration. Clin Infect Dis. 2010;50:1387-1396
Slide courtesy JS Currier
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Pericardial disease
HIV Cardiomyopathy/HF
Pulmonary hypertension
Arrhythmias and sudden cardiac death
Hypertension/vascular disease
Coronary artery disease
Malignancies
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• Pericardial disease may be the initial manifestation in
the early stage of the illness
• Aetiology of cardiac disease tends to reflect the
prevalent infectious disease like TB
• Association with aneurysm of large vessels
• Constraints in resources makes diagnosis and
management of heart disease difficult 7
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1. More than 90% in SSA is from M. Tb ( 50 -70% in HIV –ve, 5% in the developed world)
2. HIV infection causes a higher prevalence & more severe myopericardial disease with a higher mortality,
3. HIV infection lead to lower rate of progression to constriction, due to altered pericardial immunology .
4. Mortality is higher compared to uninfected patients
5. Role of adjunctive steroids :
– The IMPI Trial was a definitive study that answered this question
HIV and Pericardial disease
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Complete hospital discharge form and arrange visits at weeks 2, 4 and 6, and months 3, 6 and
thereafter 6 monthly for 2 years and then annually for 4 years to assess mortality,
recurrent tamponade, constriction
Placebo X 5 Doses
PATIENTS WITH DIFINITE OR PROBABLE TUBERCULOUS PERICARDIAL EFFUSION
RANDOMIZATION
PREDNISOLONE
X 6 weeks
PLACEBO
X 6 weeks
Mycobacterium w X 5 Doses
Placebo X 5 Doses
Mycobacterium w X 5 Doses
IMPI Trial: Study Design
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0.5 2Prednisolone
BetterPlacebo Better
Primary efficacy outcome
Death
Tamponade
Constriction
Hospitalization
Opportunistic infection
Malignancy
AE, Not Hospitalized
Injection side effect
Prednisolone Placebo Hazard Ratio (95% CI) P
N(%) N(%)
168 (23.8) 170 (24.5 ) 0.95 (0.77 - 1.18 ) 0.66
133 (18.8) 115 (16.6 ) 1.15 (0.90 - 1.48 ) 0.26
22 ( 3.1 ) 28 ( 4.0 ) 0.77 (0.44 - 1.35 ) 0.37
31 ( 4.4 ) 54 ( 7.8 ) 0.56 (0.36 - 0.87 ) 0.01
146 (20.7) 175 (25.2 ) 0.79 (0.63 - 0.99 ) 0.04
78 (11.0) 68 ( 9.8 ) 1.16 (0.84 - 1.61 ) 0.36
13 ( 1.8 ) 4 ( 0.6 ) 3.27 (1.07 - 10.03 ) 0.03
171 (24.2) 149 (21.5 ) 1.15 (0.93 - 1.44 ) 0.20
140 (19.8) 137 (19.7 ) 0.98 (0.77 - 1.24 ) 0.84
Effect of Prednisolone on Outcomes
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IMPI: Time To Malignancy
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HIV Associated Cardiomyopathy
• HAART caused a 50% in HIV- CMP in
developed countries
• By contrast, 32% in HIV- CMP in
developing countries
• Low rates of HIV-CMP in series with high
uptake of HAART
• HAART improves deterioration in patients
with established HIV-CMP but does not
reverse cardiac function
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HIV Associated Cardiomyopathy
• Malnutrition has been postulated to be a
contributory factor In Africa
• Role of genetic factors largely unknown
• HIV is an unlikely risk factor for PPCM in
the era of widespread HAART use
• HIV infected women had similar 2 year
prognosis with uninfected PPCM patients
• Dobutamine stress echo was found to be
incremental to NYHA class in risk
stratifying patients for cardiac death. 15
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HIV Associated HF
• HIV infected patients usually have HF diagnosed in
the third decade
• HF in HIV usually often women.
• Systolic and diastolic dysfunction are both more
common (30% prevalence) in HIV than in controls
• Rarely, diastolic dysfunction is more prevalent
• Ventricular dimensions and volumes are large in
HIV patients with HF in SSA
• Early detection of subclinical myocardial dysfunction,
can be made by 2-dimensional strain and strain rate
using speckle tracking
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HIV and Diastolic Dysfunction
• LVSD is currently less common among HIV infected
patients with HF in high-income countries
• Diastolic dysfunction is present in up to 64% of
asymptomatic HIV patients on HAART in high-income
countries
• Diastolic dysfunction appears to be independent of
traditional risk factors including age and hypertension
• DD is often the only echo abnormality found in
asymptomatic HIV infected patients
• Mechanisms poorly understood - but may involve
direct myocardial effects of HIV, occult CAD, cardiac
fibrosis
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10% of 5328 patients with de novo heart disease were HIV
+ve
38% had HIV assoc CMP (LVEF 46%),25% had pericarditis/
pericardialeffusion, 8% had HIV related PAH
2.4% had CAD ( mean age of 41 years) 21
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Primary diagnosis of all human immunodeficiency virus-positive
cases (n = 518).
Sliwa K et al. Eur Heart J 2012;33:866-874
Published on behalf of the European Society of Cardiology. All rights reserved. © The Author
2011. For permissions please email: [email protected]
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HIV Associated HF
• In THESUS HF Compared with patients with
emerging causes of HF, those with endemic
causes of HF (including HIV):-
• were younger by 10 to 15 years
• were less often smokers, hypertensive, or diabetic,
• had larger LV systolic and diastolic dimensions
• Had slightly longer lengths of hospital stay (9.8 vs.
8.7 days), higher in-hospital mortality (28% vs. 14%),
60-day mortality (13% vs. 9.0%), and 180-day
mortality (21% vs. 16%)
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HIV related PAH
• Prevalence is 0.5% (vs. 0.02% in general population)
• Reported in 30% of cases of isolated PAH and 8.1 %
of de novo presentations of HIV-associated CVD
• No apparent association with CD4 cells or viral load
• Pulmonary vessel endothelial cell proliferation
triggered by cytokines – endothelin 1 IL-6, TNF alpha.
• Certain ARVs may paly a role by causing endothelial
dysfunction through endothelial NO synthase down
regulation and superoxide anion production
• More rapidly progressive than IPAH; poorer prognosis
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This is probably the first histologically confirmed case of PAH associated
with HIV and pregnancy in Africa. The authors raised the following issues:
1. The question of antenatal screening for HIV +ve pregnant patients for PAH
with echo or BNP
2. The consideration of diagnosis of PAH in all pregnant HIV +ve patients
with dyspnoea, signs of right heart failure and clinically normal lung
3. The need for research to establish the clinical epidemiology and
appropriate management of PAH in HIV +ve pregnant patients
HIV Infection, pulmonary arterial hypertension and
pregnancy: a fatal triad
Nyo MTL, Schoeman L, Sookhayi R, Mayosi BM
(CVJA 2012; Vol 23, No 7)
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• HIV infection and ART treatment are both associated
with differences in cardio-metabolic traits compared
with HIV-uninfected or ART-naive patients in SSA.
• Further research aimed towards the development of
specific guidelines for assessment and management
of cardiometabolic risk in HIV-infected individuals in
the region.
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Acute Coronary Syndromes in Treatment-
Naïve Black South Africans with Human
Immunodeficiency Virus Infection
Becker AC et al J Interv Cardiology 2010
• Younger ( 43yrs Vs 54yrs)
• Smokers (73% Vs 33%)
• Less HTN (23% Vs 77%)
• Less DM ( 3% Vs 23%)
• Lower LDLc ( 2.2 Vs 3.0)
• Lower HDL Cholesterol (0.8 Vs 1.1)
• Less atherosclerotic burden with more normal infarct
related vessel (47% Vs 13%)
• Higher large thrombus burden (43% Vs 17%)
• More target lesion revascularization
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HIV and Coronary Artery disease
• Picture in SSA different from the developed
world
• Clinical profile of HIV patients with acute MI
was not influence by HAART
• More studies needed to explain lack in
increase in CAD following increased use of
HAART in SSA
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(J Natl Med Assos 2005; 97:1657 – 1661)
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QT Prolongation and Sudden Death
• HIV infection was associated with a 4.5-fold higher
than expected rate of SCD
• Conduction abnormalities in HIV is being increasingly
recognized.
• HIV infection is independently associated with QT
prolongation, more marked in those with hepatitis C
coinfection
• PIs and Other medications e.g. macrolides antifungals
pentamidine may play a role.
• 20 percent of individuals with HIV in developed
countries may have prolonged QT, more in women,
those with CAD risk factors. 36
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• Better understanding of HIV related CVD in SSA
• TB pericarditis carries a high mortality despite therapy.
• Few feasible options for management of HRPH
• Few targeted therapies available for HIV-CMP &
vasculopathy
• CAD from ART still not common on the continent
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Summary
• HIV increases risk of CVD 1.5-2X
• Metabolic changes associated with HIV and HAART
have not shown increase in CAD in Africa
• As the population with HIV ages with HAART, and
lifestyle-associated coronary risk factors increase, this
may change
• Early detect and treat other co-morbidities that
increase CVD risk in all patients
• Minimized modifiable CVD risk factors i.e. smoking
• Integrate CVD and HIV care; add CV outcomes to
HIV trials, increase enrollment of HIV patients in CV
trials
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Thank you for your attention
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