aortic regurgitation - home - american college of...
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Aortic Regurgitation:From Medical Therapy to Valve Intervention
Robert O. Bonow, MD, MS, MACCNorthwestern University
Chicago, IL, USA
Patrick T. O’Gara MD, MACCHarvard UniversityBoston, MA, USA
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Chronic Aortic Regurgitation
Preoperative predictors of survival after AVR:
n LVEF LVSD
Forman 1980 90Henry 1980 50Cunha 1980 86Greves 1981 45Kumpuris 1982 43Bonow 1985 80Daniel 1985 84Cormier 1986 73Sheiban 1986 84Taniguchi 1987 82Klodas 1996 219Turina 1998 192Chaliki 2002 450
Tornos 2006 170
Total 1728
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Chronic Aortic Regurgitation
Preoperative predictors of survival after AVR:
n LVEF LVSD
Forman 1980 90Henry 1980 50Cunha 1980 86Greves 1981 45Kumpuris 1982 43Bonow 1985 80Daniel 1985 84Cormier 1986 73Sheiban 1986 84Taniguchi 1987 82Klodas 1996 219Turina 1998 192Chaliki 2002 450
Tornos 2006 170
Total 1728
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Chronic Aortic Regurgitation
Preoperative predictors of survival after AVR:
n LVEF LVSD
Forman 1980 90Henry 1980 50Cunha 1980 86Greves 1981 45Kumpuris 1982 43Bonow 1985 80Daniel 1985 84Cormier 1986 73Sheiban 1986 84Taniguchi 1987 82Klodas 1996 219Turina 1998 192Chaliki 2002 450
Tornos 2006 170
Total 1728
*
*
*LVSV
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Average hospital mortality: 8.8%
• Low volume centers: 13.0%
• High volume centers: 6.0%
Data from national Medicare database 1994-1999
684 hospitals
142,488 AVRs
Medicare data
0
20
40
60
80
100
0 1 2 3 4 5Time (years)
100
80
60
40
20
00 2 4 6 8 10
Aliv
e, A
sym
pto
matic
with N
orm
al LV
Function (
%)
Asymptomatic with normal LV function
Aortic RegurgitationNatural History of Asymptomatic Patients
1 3 5 7 9 11
Bonow et al. Circulation 1991;84:1625-1635
64%
••
n 104
Annual risk 3.8%
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Average hospital mortality: 8.8%
• Low volume centers: 13.0%
• High volume centers: 6.0%
Data from national Medicare database 1994-1999
684 hospitals
142,488 AVRs
Medicare data
0
20
40
60
80
100
0 1 2 3 4 5Time (years)
100
80
60
40
20
00 2 4 6 8 10
Aliv
e, A
sym
pto
matic
with N
orm
al LV
Function (
%)
Asymptomatic with normal LV function
Aortic RegurgitationNatural History of Asymptomatic Patients
1 3 5 7 9 11
Bonow et al. Circulation 1991;84:1625-1635
Tornos et al. Am Heart J 1995;130:333-339
64%
70%
••
••
n 104 101
Annual risk 3.8% 3.1%
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Average hospital mortality: 8.8%
• Low volume centers: 13.0%
• High volume centers: 6.0%
Data from national Medicare database 1994-1999
684 hospitals
142,488 AVRs
Medicare data
0
20
40
60
80
100
0 1 2 3 4 5Time (years)
100
80
60
40
20
00 2 4 6 8 10
Aliv
e, A
sym
pto
matic
with N
orm
al LV
Function (
%)
Asymptomatic with normal LV function
Aortic RegurgitationNatural History of Asymptomatic Patients
1 3 5 7 9 11
Bonow et al. Circulation 1991;84:1625-1635
Tornos et al. Am Heart J 1995;130:333-339
Borer et al. Circulation 1998;97:525-534
64%
70%
54%
••
•••
n 104 101 104
Annual risk 3.8% 3.1% 6.2%
•
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Average hospital mortality: 8.8%
• Low volume centers: 13.0%
• High volume centers: 6.0%
Data from national Medicare database 1994-1999
684 hospitals
142,488 AVRs
Medicare data
0
20
40
60
80
100
0 1 2 3 4 5Time (years)
100
80
60
40
20
00 2 4 6 8 10
Aliv
e, A
sym
pto
matic
with N
orm
al LV
Function (
%)
Asymptomatic with normal LV function
Aortic RegurgitationNatural History of Asymptomatic Patients
1 3 5 7 9 11
Bonow et al. Circulation 1991;84:1625-1635
Tornos et al. Am Heart J 1995;130:333-339
Borer et al. Circulation 1998;97:525-534
64%
70%
54%
n 104 101 104
Annual risk 3.8% 3.1% 6.2%
Endpoints:
Symptoms 19 8 28
Asymp LVD 4 6 7Death 2 0 4
••
•••
Total 25 14 39
•
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Average hospital mortality: 8.8%
• Low volume centers: 13.0%
• High volume centers: 6.0%
Data from national Medicare database 1994-1999
684 hospitals
142,488 AVRs
Medicare data
0
20
40
60
80
100
0 1 2 3 4 5Time (years)
100
80
60
40
20
00 2 4 6 8 10
Aliv
e, A
sym
pto
matic
with N
orm
al LV
Function (
%)
Asymptomatic with normal LV function
Aortic RegurgitationNatural History of Asymptomatic Patients
1 3 5 7 9 11
Bonow et al. Circulation 1991;84:1625-1635
Tornos et al. Am Heart J 1995;130:333-339
Borer et al. Circulation 1998;97:525-534
64%
70%
54%
n 104 101 104
Annual risk 3.8% 3.1% 6.2%
Endpoints:
Symptoms 19 8 28
Asymp LVD 4 6 7 30% of endpoints occur
before onset of symptoms
••
••• •
Death 2 0 4
Total 25 14 39
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Asymptomatic AR with Normal LV Function
Factors predictive of symptoms and /or LV dysfunction:
• LV end-systolic dimension/volume
• LV end-diastolic dimension/volume
• LV ejection fraction with exercise
Bonow, Circulation 1984,1991
Siemienczuk, Ann Intern Med 1989
Tornos, Am Heart J 1995
Borer, Circulation 1998
Tarasoutchi, J Am Coll Cardiol 2003
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• Symptomatic patients class I
Indications for valve replacement
Aortic regurgitation
class I
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• Symptomatic patients
• LV systolic dysfunction
class I
class I
Indications for valve replacement
Aortic regurgitation
class I
class I
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• Symptomatic patients
• LV systolic dysfunction
• Patients undergoing CABG
class I
class I
class I
Indications for valve replacement
Aortic regurgitation
class I
class I
class I
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• Symptomatic patients
• LV systolic dysfunction
• Patients undergoing CABG
• Severe LV dilatation
class I
class I
class I
Indications for valve replacement
Aortic regurgitation
class IIa
class I
class I
class I
class IIa
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• Symptomatic patients
• LV systolic dysfunction
• Patients undergoing CABG
• Severe LV dilatation
• Progressive LV dilatation,
low risk for surgery
LVSD >50 mm
class I
class I
class I
Indications for valve replacement
Aortic regurgitation
class IIa
class IIb
class I
class I
class I
class IIa
class IIa
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• Symptomatic patients
• LV systolic dysfunction
• Patients undergoing CABG
• Severe LV dilatation
• Progressive LV dilatation,
low risk for surgery
LVSD >50 mm
class I
class I
class I
Indications for valve replacement
Aortic regurgitation
class IIa
class IIb
class I
class I
class I
class IIa
class IIa
LVDD >70 mmLVDD >65 mm
LVSD >50 mm/m2
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Pre-AVR Post-AVR
LV LV
LA LAProsthetic
valveAortic
valve
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Average hospital mortality: 8.8%
• Low volume centers: 13.0%
• High volume centers: 6.0%
Data from national Medicare database 1994-1999
684 hospitals
142,488 AVRs
Medicare data
0
20
40
60
80
100
0 1 2 3 4 5Time (years)
100
80
60
40
20
00 2 4 6 8 10
Surv
ival (
perc
ent)
Aortic RegurgitationLong-Term Survival After AVR
12
Group A
n=60
Tornos et al J Am Coll Cardiol 2006;26:1309-1313
p<0.01
14 16
Group B
n=110
Guidelines +
Guidelines -
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n = 484
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Why are we still talking about LV diameters
in 2016 instead of LV volumes?
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J Am Coll Cardiol Img 2008;1:1-11
Regurgitant orifice
Regurgitant volume
LV ESV index
HR CI P value
1.22 1.16 – 1.28 <0.001
1.42 1.28 – 1.57 <0.001
1.80 1.20 – 2.57 0.01
Survival Free of AVR
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Univariate
HR P value
16.0 <0.0001
13.2 <0.0001
16.3 <0.0001
7.0 <0.0001
3.2 <0.001
Regurgitant fraction
Regurgitant volume
LVEDV
LVESV
LV mass
Multivariable
HR P value
7.4 <0.0001
13.2 0.0001
6.1 0.002
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BNP
Regurgitant orifice
LVESD index
LVEDD index
LVESV index
LVEDV index
HR P value
6.6 0.0001
4.4 0.0001
3.6 0.001
2.2 0.01
2.1 0.031
1.8 0.045
HR P value
6.9 0.0001
3.4 0.001
4.3 0.01
2.1 0.09
Univariate Multivariable
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Aortic RegurgitationAortic Valve Repair
Gleeson et al J Thorac Cardiovasc Surg 2005;130:601-603
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Acute Severe AR
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Stages of Chronic VHD
Stage A
At Risk of VHD
Stage B Progressive
VHD
Stage C
Asx Severe
Stage D
Sx Severe
C1
Normal LV
or RV
C2
Abnormal
LV or RV
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Aortic RegurgitationMedical Therapy
Recommendations COR LOE
Treatment of hypertension (systolic BP >140 mm Hg) is
recommended in patients with chronic AR (stages B and C),
preferably with dihydropyridine calcium channel blockers or
angiotensin-converting enzyme (ACE) inhibitors/angiotensin-
receptor blockers (ARBs)
I B
Medical therapy with ACE inhibitors/ARBs and beta blockers
is reasonable in patients with severe AR who have symptoms
and/or LV dysfunction (stages C2 and D) when surgery is not
performed because of comorbidities
IIa B
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Indications for Aortic Valve Replacement for Chronic Aortic Regurgitation
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Recommendations COR LOE
AVR is indicated for symptomatic patients with severe AR
regardless of LV systolic function (stage D) I B
AVR is indicated for patients with severe AR (stage C or D) who
are undergoing other cardiac surgery I C
Aortic Regurgitation Intervention
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Survival After AVRPre-Operative LV Function
0
20
40
60
80
100
0 2 4 6 8 10 12 14 16 18 20
P < 0.001
Chaliki HP et al. Circulation 2002; 106:2687-93.
Years
Su
rviv
al
(%)
EF > 0.50
EF < 0.35
EF 0.35-0.50
Peri-op mortality
Low EF 14%
Med EF 6.7%
Nml EF 3.7%
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Kamath A R et al. Circulation 2009;120:S134-S138
AVR with EF < 0.35
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Outcomes in Patients with AS/AR
Egbe AC and Warnes CA. JACC 2016;68:2591-3
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Aortopathy
Verma S and Siu SC. NEJM 2014; 370:1920-9. Fazel SS et al. JTCVS 2008; 131:901-7
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Bicuspid Aortic Valve and AortopathyIntervention
Recommendations COR LOE
Operative intervention to repair the aortic sinuses or replace the
ascending aorta is indicated in patients with a bicuspid aortic valve if
the diameter of the aortic sinuses or ascending aorta is greater than
5.5 cm
I B
Operative intervention to repair the aortic sinuses or replace the
ascending aorta is reasonable in patients with bicuspid aortic valves if
the diameter of the aortic sinuses or ascending aorta is greater than
5.0 cm and a risk factor for dissection is present (family history of
aortic dissection or if the rate of increase in diameter is ≥0.5 cm per
year)
IIa C
Replacement of the ascending aorta is reasonable in patients with a
bicuspid aortic valve who are undergoing aortic valve surgery
because of severe AS or AR (Sections 3.4 and 4.4) if the diameter
of the ascending aorta is greater than 4.5 cmIIa C
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Aortic Valve and Root
Leipsic J et al. JACC Imag 2011; 4:416-29
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Aortic Root Surgery
Ouzounian M et al. JACC 2016;68:1838-47
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Ouzounian M et al. JACC 2016;68:1838-47
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Franzone A et al. JACC Intv. 2016
http://dx.doi.org/10.1016/j.cin.2016.09.030
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TAVR for AR
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J-Valve for AR
Zhu D et al. JACC 2016;67:2802-8
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Imaging for TAVR in AR: Sapien 3
Urena M et al. JACC 2016; 68.
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TAVR Experience in Pure AR
Franzone A et al. JACC Intv. 2016
http://dx.doi.org/10.1016/j.cin.2016.09.030
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TAVR for BAV DiseaseB-TAVR Registry (n=301)
Yoon S-H et al. JACC 2016;68:1195-205
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Aortic Regurgitation
• Establish etiology & mechanism
• Determine severity
• Evolving indications for intervention
• Surgical approaches
• Emerging TAVR capabilities