FFR in Multivessel Disease - European Society of...
Transcript of FFR in Multivessel Disease - European Society of...
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FFR in Multivessel Disease
April, 26 2013
Coronary Physiology in the Catheterization Laboratory
Location: European Heart House, Nice, France
Pim A.L. Tonino, MD, PhD
Hartcentrum, Eindhoven, the Netherlands
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Advantages of FFR in MVD ......
• FFR is the only way to accurately discriminateischemic from non-ischemic lesions in MVD; notpossible with any other diagnostic modality
• FFR-guided revascularization in MVD improvesoutcome and lowers costs
• FFR can be of help in clinical decision making in MVD: PCI or CABG?
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Angiographic multivessel disease
1. To proof there is myocardal ischemia
2. To localize ischemia
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Occurence of MVD in PCI patients > 60%
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Angiographic multivessel disease
1. To proof there is myocardal ischemia
2. To localize ischemia
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Ischemia-producing coronary lesions cause
symptoms and cardiac events
2.9
2.3
0.80.3
4.2
2.92.7
0.5
0
2
4
6
8
10
normal mild ischemia moderate
ischemia
severe ischemia
E
ven
ts (%
)
Death per year
Myocardial infarction per year
B
2.9
2.3
0.80.3
4.2
2.92.7
0.5
0
2
4
6
8
10
normal mild ischemia moderate
ischemia
severe ischemia
E
ven
ts (%
)
Death per year
Myocardial infarction per year
B
Hachamovitch et al., Circulation 1998
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PCI of ischemic lesions better outcome
16.2
32.4
0
10
20
30
40
Death
or
myocard
ial in
farc
tion
(%
)
78
52
0
20
40
60
80
100
Redu
cti
on
in
isch
em
ia ≥
5%
(%
)
A P=0.007
PCI Medical
therapy
BP=0.001
Ischemia
reduction
≥5%
No ischemia
reduction
≥5%
16.2
32.4
0
10
20
30
40
Death
or
myocard
ial in
farc
tion
(%
)
78
52
0
20
40
60
80
100
Redu
cti
on
in
isch
em
ia ≥
5%
(%
) A P=0.007
PCI Medical
therapy
A P=0.007
PCI Medical
therapy
BP=0.001
Ischemia
reduction
≥5%
No ischemia
reduction
≥5%
Ischemia
reduction
≥5%
No ischemia
reduction
≥5%
Shaw et al. COURAGE trial nuclear substudy. Circulation 2008
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0%
20%
40%
60%
80%
100%
baseline 1month 1 year 2 year 5 year
freedom from chest pain
DEFER-study, JACC 2007; 49 : 2105-2111
PCI of ischemic lesions (FFR < 0.75) effective symptom-relief
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a functionally non-significant stenosis
(“non-ischemic stenosis”) generally
gives no complaints
So, from the symptomatic point of view there is
no reason to stent such lesion
Functionally NON-significant stenoses
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Cardiac Death And Acute MI After 5 Years:
functionally non-significant stenoses
Defer, JACC, 2008
3.3
7.9
0
5
10
15
20 %
Medication Stent
FFR > 0.75
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So, functionally significant (= ischemic) lesions
should be revascularized, …..
…..……whereas it makes no sense to stent
non-ischemic lesions
So, if we are able to accurately discriminate
ischemic from non-ischemic lesions
in MVD-patients
we can selectively treat ischemic lesions by PCI
and leave non-ischemic lesions for medical treatment
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Particularly in MVD we often have
insufficient information about
stenosis-related myocardial ischemia
1. To proof there is myocardal ischemia
2. To localize ischemia
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Non-invasive tests aren’t always performed pre-PCI
Lin et al. JAMA 2008
Because …
Only 44.5% (20.1% - 70.6%) of Medicare patients undergoing
elective PCI, underwent stress-testing < 90 days before PCI
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Non-invasive tests are frequently inaccurate in
multivessel disease:
- Excercise test:
non-conclusive, information per patient
- Nuclear scan:
inaccurate in MVD (balanced ischemia, serial stenosis)
Because …
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Balanced ischemia …
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Melikian et al. J. Am. Coll. Cardiol. Intv. 2010;3;307-314
Poor concordance at a per-patient (n=67)
and a per-vessel level
In 42% of pts. with angiographic 2- or
3VD, MPI and FFR identified identical
ischemic territories
In 36% MPI underestimated ,and in 22%
MPI overestimated the number of
ischemic territories
Nuclear imaging …. poorly discriminates in MVD
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‘Until MPI more reliably identifies all
physiologically significant stenoses in
patients with multivessel CAD, FFR
remains the gold standard for this
important evaluation.’
George Beller commenting In JACC interventions on the article by Melikian et al. about comparison between FFR and MPI
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The angiogram poorly predicts presence of myocardial
ischemia related to a specific coronary stenosis
Because …
Tonino et al., JACC, June 2010
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For selective stenting of ischemic lesions
in MVD… FFR is needed
1. To proof there is myocardal ischemia
2. To localize ischemia
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However, …
• does it matter to selectively stent ischemic
stenoses?
• does routine use of FFR in MVD impact
prognosis?
• what about functional class?
• what about procedure time?
for testing such an FFR-guided PCI strategy
a randomized trial is mandatory
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Lesions warranting
PCI identified
PCI performed on
indicated lesionsRandomized
PCI performed on
indicated lesions
only if FFR <0.80
FFR-GuidedAngio-Guided
Composite of death,
MI and repeat revasc.
(MACE) at 1 year
Primary Endpoint
Individual rates of death, MI,
and repeat revasc., MACE,
and functional status at 2 years
Key Secondary Endpoints
Flow Chart FAME study
Tonino et al. N Engl J Med. 2009
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1905 Patients were assessed
for eligibility
900 Were not eligible
157 Had left main artery
stenosis
217 Had extreme vessel
tortuosity or calcification
105 Did not provide consent
86 Had contra-indication for
drug-eluting stent
94 Participated in another
study
210 Had logistic reasons
31 Had other reasons
1005 Underwent
randomization
496 Were assigned to
angiography-guided PCI
509 were assigned to
FFR-guided PCI
36 Were lost to follow-up 29 Were lost to follow-up
496 Were included in
intention-to-treat analysis
509 Were included in
intention-to-treat analysis
> 50%
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Angio-
Guided
n = 496
FFR-
Guided
n = 509
P
Value
Age, mean ±SD 64±10 65±10 0.47
Male, % 73 75 0.30
Diabetes, % 25 24 0.65
Hypertension, % 66 61 0.10
Current smoker, % 32 27 0.12
Hyperlipidemia, % 73 72 0.62
Previous MI, % 36 37 0.84
NSTE ACS, % 36 29 0.11
Previous PCI , % 26 29 0.34
LVEF < 50% , % 27 29 0.47
Baseline Characteristics
Tonino et al. N Engl J Med. 2009
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Angio-
Guided
n = 496
FFR-
Guided
n = 509
P
Value
Indicated lesions / patient 2.7 ± 0.9 2.8 ± 1.0 0.34
Stents / patient 2.7 ± 1.2 1.9 ± 1.3 <0.001
Procedure time (min) 70 ± 44 71 ± 43 0.51
Contrast agent used (ml) 302 ± 127 272 ± 133 <0.001
Length of hospital stay (days) 3.7 ± 3.5 3.4 ± 3.3 0.05
Tonino et al. N Engl J Med. 2009
Procedural Characteristics
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FFR-guided
30 days
2.9% 90 days
3.8% 180 days
4.9% 360 days
5.1%
Angio-guided
Absolute Difference in MACE-Free Survival
Tonino et al. N Engl J Med. 2009
1 year outcome
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FAME:
Beneficial effect of FFR in
stable angina and in ACS
Sels et al. JACC CV interventions 2011
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Angio Better FFR Better
FFR
Less
Costly
Angio
Less
Costly
QALY
US
D
Bootstrap Simulation
Economic evaluation
Fearon et al. Circulation, December, 2010
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Angio-
Guided
n = 496
FFR-
Guided
n = 509
P
Value
Individual Endpoints
Death 19 (3.8) 13 (2.6) 0.25
Myocardial Infarction 48 (9.7) 31 (6.1) 0.03
CABG or repeat PCI 61 (12.3) 53 (10.4) 0.35
Composite Endpoints
Death or Myocardial Infarction 63 (12.7) 43 (8.4) 0.03
Death, MI, CABG, or re-PCI 110 (22.2) 90 (17.7) 0.07
Pijls et al. JACC, 2010
Adverse events after 2 years
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FFR-Guided
Angio-Guided730 days
4.3%
2 year death or MI
Pijls et al., JACC, 2010
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23,225,9
77,981,3
75,8
79,9
0
10
20
30
40
50
60
70
80
90
100
Angio-guided FFR-guided Angio-guided FFR-guided Angio-guided FFR-guided
Fre
ed
om
fro
m A
ng
ina
(%
)
baseline 1 year 2 years
Angiography-guided
FFR-guided
Freedom from angina
Pijls et al., JACC, 2010
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513 Deferred Lesions in
509 FFR-Guided Patients
2 Years
31 Myocardial Infarctions22
Peri-procedural
9Late Myocardial Infarctions
8Due to a New Lesion
or Stent Related
1Myocardial Infarction due to
an Originally Deferred Lesion
Only 1/513 or 0.2% of deferred
lesions resulted in a late
myocardial infarction
Pijls et al., JACC, July 2010
Outcome of deferred lesions
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Angiographic multivessel disease
1. To proof there is myocardal ischemia
2. To localize ischemia
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FFR now Class I Level A in ESC guidelines!
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Is FFR mandatory in all lesions in MVD?
FAME angiographic substudy:
FFR in MVD PCI in all stenoses of 50-90%
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FFR – ischemic threshold 0.80
Tonino et al., JACC, 2010
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Advantages of FFR in MVD ......
• FFR is the only way to accurately discriminateischemic from non-ischemic lesions in MVD; notpossible with any other diagnostic modality
• FFR-guided revascularization in MVD improvesoutcome and lowers costs
• FFR can be of help in clinical decision
making in MVD: PCI or CABG?
![Page 37: FFR in Multivessel Disease - European Society of Cardiologyassets.escardio.org/assets/presentations/OTHER2013/Coronary... · FFR in Multivessel Disease April, 26 2013 Coronary Physiology](https://reader031.fdocuments.in/reader031/viewer/2022011807/5c65e1a309d3f2d12a8b644a/html5/thumbnails/37.jpg)
Tonino et al., JACC, 2010
Angiography vs physiology in FAME: angiographic 3VD
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Tonino et al., JACC, 2010
FFR of all 3 arteries
Angiography vs physiology in FAME: angiographic 3VD
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Tonino et al., JACC, 2010
Angiographic 3VD becomes
‘less disease’ from
a functional point of view
FFR of all 3 arteries
Angiography vs physiology in FAME: angiographic 3VD
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FFR can be of great help in clinical decisionmaking in MVD: PCI or CABG?
• ‘Downgrading’ angiographic 3VD with FFR
to functional 2VD or 1VD might change
revascularization strategy from CABG
PCI
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• 4 stenoses
• Syntax score with LAD: 29 (intermediate tertile)
• Syntax score without LAD: 22 (low tertile)
Clinical decision: PCI or CABG?
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0.63 0.72 0.83
0.63
0.72
0.83
FFR of LAD
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Notes from this case
• FFR can reduce angiographic 3VD
• Vice versa, FFR can reveal ischemia
which is not revealed by anatomic
assessment
• PCI of RCX and RCA would have left a
large territory at risk
• Because of the diffuse disease in the LAD,
the hartteam decided for CABG
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ConclusionsAdvantages of FFR in MVD ......
• FFR is the only way to accurately discriminateischemic from non-ischemic lesions in MVD; notpossible with any other diagnostic modality
• FFR-guided revascularization in MVD improvesoutcome and lowers costs
• FFR can be of help in clinical decision making in MVD: PCI or CABG?
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FFR in MVD: future directions
PCI CABG
FFR-guided
Angio-guided
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FFR in MVD: future directions
PCI CABG
What about FFR-guided PCI vs CABG??