beta-blockers in heart failure: evidence put into practice · beta-blockers in heart failure:...
TRANSCRIPT
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Beta-blockers in heart failure:
evidence put into practice
John McMurrayProfessor of Medical Cardiology, University of
Glasgow & Consultant Cardiologist ,Western
Infirmary, Glasgow, UK
Eugene Braunwald Scholar in Cardiovascular
Diseases, Brigham and Women’s Hospital,
Boston & Visiting Professor, Harvard Medical
School
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V-HEFT I
0
0.7
30
0.6
0.5
0.4
0.3
0.2
0.1
42362418126
Interval (Months)
Placebo (273)
Prazosin (183)
Hyd-Iso (186)
Cumulative Mortality Rate
Cohn et al. NEJM 1986.
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V-HEFT I Systolic Blood Pressure
Placebo H/N Prazosin
Baseline 118.9 119.6 119.2
8 weeks +0.2 0 -4.2
1 year -0.3 +0.6 -4.6
Lives saved not related to in BP
Cohn et al. NEJM 1986
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85
90
95
100
0 28 56 84 112 140 168 196 224 252
Days after Randomization
Number of Patients at Risk
1913 1482 1067 594
Placebo
Moxonidine
P=0.005
%
MOXCONmoxonidine CHF trial
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00
3 6 9 12 15 18 21
100
90
80
60
70
Carvedilol
Placebo
Months
COPERNICUS 2001
p=0.00013
% Survival of patientsMERIT-HF 1999
12Months of follow-up
% Cumulative mortality
0 3 6 9 15 18 21
20
15
10
5
0
Placebo
Metoprolol CR/XL
p=0.0062 (adjusted)
p=0.00009 (nominal)
Time after inclusion (days)Days of therapy
0 50 100 150 200 250 300 350 400
US carvedilol programme 1996
Carvedilol
Placebo
Probability of survival
p<0.001
0.5
0.6
0.7
0.8
0.9
1.0
Bisoprolol
Placebo
p<0.0001
Survival
CIBIS-2 1998
0
0.6
0.8
1.0
0 200 400 600 800
Beta-blocker HF trials
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Cumulative benefit of poly-pharmacy in mild-moderate HF
Diuretic/digoxin
ACE inhib.
Diuretic/digoxin
13.2
8.8
0
5
10
15
20
1 y
ea
r m
ort
ali
ty (
%) 15.7
12.4
Diuretic/digoxin
ACE inhib.
Diuretic/digoxin
ACE inhib.Beta-blocker
CIBIS 21999
SOLVD-T1991
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Cumulative benefit of poly-pharmacy(and CRT) in severe HF
ACE inhib. ACE inhib.Aldo. antag
Beta-blocker
27.3
2119.7
12.8 12.6
9.7
5
10
15
20
25
30
35
ACE inhib.Aldo. antag.
ACE inhib.Aldo. antag.
ACE inhib.Aldo. antag
Beta-blocker
ACE inhib.Aldo. antag
Beta-blockerCRT
0
1 y
ea
r m
ort
ali
ty (
%)
RALES1999
COPERNICUS2001
CARE-HF2005
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Beta-blocker trials in HF - what do the
results mean?
• for every 1000 “COPERNICUS like” patients treated with a beta-blocker for 1 year -approximately 70 premature deaths avoided
• compares with 40 premature deaths avoided in milder (“MERIT-HF/CIBIS-2 type”) patients
• compares with 57 premature deaths avoided per 1000 patient years with spironolactone in “ RALES type” patients
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Question: which subgroup of patients has most benefit from beta-blockers?
A. Men (versus women)?
B. Younger (versus elderly)?
C. Mild symptoms (versus severe)?
D. Higher BP (versus lower)?
E. None (no subgroup found to benefit more than another)
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Question: which subgroup of patients has most benefit from beta-blockers?
A. Men (versus women)?
B. Younger (versus elderly)?
C. Mild symptoms (versus severe)?
D. Higher BP (versus lower)?
E. None (no subgroup found to benefit more than another)
A 6.5%
B 13.0%
C 6.5%
D 10.9%
E 63.0%
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MERIT-HF subgroups: Death or HF hospitalisation
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CHARM ESC Hotline 030829 13
Women
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Meta-analysis of CIBIS 2, MERIT-HF
and COPERNICUS
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The elderly
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MERIT-HF: subgroups
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CHARM ESC Hotline 030829 18
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CHARM ESC Hotline 030829 19
Beta-blocker trials meta-analysis
Non-elderly Elderly
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SENIORS
2128 patients ≥ 70 years (median age 75 years)
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2128 patients ≥70 yrs with prior HF hospitalization or LVEF ≤0.35
Followed for a mean of 21 months
Primary endpoint: Death or CV hospitalization
SENIORS: nebivolol vs placebo
Flather et al. Eur Heart J 2005;26:215-25
0
10
20
30
40
50
0 6 12 18 24 30
Time in study (months)
Proportion having an event (%)
Placebo
Nebivolol
p=0.039
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Question: Are all beta-blockers the same in heart failure: Which beta-blocker is not of proven benefit in
heart failure
A. Bisoprolol?
B. Bucindolol?
C. Carvedilol?
D. Metoprolol succinate?
E. Nebivolol?
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Question: Are all beta-blockers the same in heart failure: Which beta-
blocker is not of proven benefit in heart failure
A. Bisoprolol?
B. Bucindolol?
C. Carvedilol?
D. Metoprolol succinate?
E. Nebivolol?
A 3.9%
B 86.3%
C 0.0%
D 2.0%
E 7.8%
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1.25
MERIT-HF
1.0
CIBIS-2
0.50
0.66
BB better BB worse
0.66
COPERNICUS
0.65
metoprolol extended release
bisoprolol
carvedilol
Beta-blockers in HF: Is it a class effect?Mortality
Heterogeneity p=0.026 0.880.75 1.03BEST
(bucindolol)
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COMET: carvedilol vs. metoprolol tartrate
3029 patients with NYHA class II-IV HF and a LVEF ≤0.35
Followed for a mean of 58 months
0
10
20
30
40
0 1 2 3 4 5
Time (years)
Mortality (%)
Metoprolol
Carvedilol
HR 0·83 (0·74–0·93), p=0·0017)
Poole-Wilson et al. Lancet 2003;362:7–13
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CHARM ESC Hotline 030829
COMET: a fair comparison?
Compared an unproven dose of short acting metoprolol tartrate to a proven dose of carvedilol (which has a much longer t1/2)
Only prior trial experience with short acting metoprolol was in MDC – dosing bd/tds; average dose 108 mg/day; average in COMET 85 mg/day
In a comparator study HR was higher in metoprolol tartrate 50mg tds group than in CR/XL 200mg/d group
Reduction in HR with metoprolol in MERIT-HF 14.0 beats/min; in COMET -11.7 beats/min (c.f. carvedilol 14.0 beats/min)
But, can a 17% mortality reduction really be explained by underdosing?
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Does dose matter?
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Carvedilol Dose-Response Trial (MOCHA*):
Effect on Mortality and Morbidity
Patients receiving diuretics, ACE inhibitors, ± digoxin; follow-up 6 months; placebo (n=84), carvedilol (n=261).*Multicenter Oral Carvedilol Heart Failure Assessment.Adapted from Bristow MR et al. Circulation. 1996;94:2807–2816.
Carvedilol
0
0.1
0.2
0.3
0.4
Mean
nu
mb
er/
su
bje
ct
Cardiovascular Hospitalizations
Carvedilol
Placebo
0
4
8
12
16
Mo
rtality
(%
)
Mortality
6.25 mg bid 12.5 mg bid 25 mg bid Placebo 6.25 mg bid 12.5 mg bid 25 mg bid
§ P=.07 vs placebo
‡ P=.05 vs placebo
§‡
‡
‡‡
‡
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Question: Which is the most evidence-based drug-treatment in heart failure?
A. ACE inhibitors?
B. Aldosterone antagonists?
C. Beta blockers?
D. Diuretics?
E. Digoxin?
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Question: Which is the most evidence-based drug-treatment in heart failure?
A. ACE inhibitors?
B. Aldosterone antagonists?
C. Beta blockers?
D. Diuretics?
E. Digoxin?
A 42.3%
B 0.0%
C 55.8%
D 1.9%
E 0.0%
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CHF trials: beta-blockers
and ACE inhibitorsTrial No. of patients
USCP 1094
CIBIS II 2647
MERIT - HF 3991
COPERNICUS 2289
BEST 2708
SENIORS 2128
COMET 3029
CONSENSUS I 253
SOLVD-T 2569
VHeFT II 804
ATLAS 3164
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BETA-BLOCKERS IN CHF
• 3 mega-trials (and USCP) all stopped prematurely because of highly statistically significant reductions in mortality
• Also improvement in symptoms, decreased number of hospital admissions and improved QoL
• Beta-blockers now mandatory first line treatments, along with an ACE inhibitor in CHF
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Improving outcomes cost-
effectively
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CIBIS IIHospital admissions (all causes)
P<0.001
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The Bottom Line
• More hospital
admissions• Cost of beta-blocker
• Cost of monitoring
• Cost of adverse effects
Placebo
Bisoprolol
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CIBIS II – Economic analysis
Eur Heart J 2001
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Question: Which of the following is true about beta-blockers in heart
failure?
A. They are worse tolerated than placebo?
B. They cause erectile dysfunction?
C. They cannot be given to patients with COPD?
D. All of the above?
E. None of the above?
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Question: Which of the following is true about beta-blockers in heart failure?
A. They are worse tolerated than placebo?
B. They cause erectile dysfunction?
C. They cannot be given to patients with COPD?
D. All of the above?
E. None of the above?
A 3.0%B 9.1%C 1.5%D 16.7%E 69.7%
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Myths about beta-blockers
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MERIT-HF: Efficacy and tolerability
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CIBIS-2: Sexual relationships (n=353)
Baseline
47.851.6
47.7
52.7 52.0 50.9
10
20
30
40
50
55
60
0
Sco
re (
un
its –
ou
t o
f 100)
Placebo Bisoprolol
6 mo. 12 mo. Baseline 6 mo. 12 mo.
FSQ: score out of 100; higher score better
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New data
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CIBIS-ELD
Double-blind RCT comparing bisoprolol and carvedilol in 883 elderly patients with heart failure (aged ≥65 yrs/mean 73yrs)
Greater reduction in HR with bisoprolol: 8.4 vs. 6.0 beats/min ( and more bradycardia-relates AEs)
Greater reduction in FEV1 with carvedilol: -42 vs. +3 ml (and more pulmonary AEs)
Fall in Hb/anaemia with carvedilol
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0.00
0.10
0.20
0.30
0.40
0 .5 1 1.5 2 2.5Years
Bisoprolol, eGFR <60 ml/min
Placebo, eGFR<60ml/min
Bisoprolol, eGFR>60 ml/min
Placebo, eGFR>60 ml/min
CIBIS-2: all cause mortality according to baseline eGFR
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The cornerstone of therapy
ACE inhibitor (or ARB)
Beta-blocker
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No further treatmentindicated
Consider ICDConsider:
CRT-P or CRT-D
Diuretic + ACEi (or ARB)Titrate to clinical stability
Persisting signsand symptoms?Yes No
Yes
No
Persistingsymptoms?
LVEF <35%
No
QRS >120 ms?
Add aldosterone antagonist OR ARB
Beta-blocker
NoYes
Yes
No further treatmentindicated
Consider: digoxin,LVAD, transplantation
Diuretic + ACEiTitrate to clinical stability
Persisting signsand symptoms?Yes No
No
Persistingsymptoms?
Beta-blocker
Yes
2008
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ESC ACC/AHA CCS HFSA
Level Class Level Class Level Class Level Class
A I A I A I A I
Guidelines: Beta-blockers
Aust/NZ
Level Class
A I
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Beta-blocker use in recent CHF trials
11%
35%
55%
69%
68%
69%
75%
72%
87%
93%
90%
90%
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Practical guidance: beta-blockers
McMurray et al Eur J HF 2005; 7:710-21
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Summary and conclusions
• Feel better
• Stay out of hospital
• Live longer
• Cut costs
Beta-blockers in patients with low
LVEF heart failure: