PowerPoint-Präsentation · Bicuspid valves 10 Jeger R. Presentation. SSC/SSCS Joint Annual Meeting...
Transcript of PowerPoint-Präsentation · Bicuspid valves 10 Jeger R. Presentation. SSC/SSCS Joint Annual Meeting...
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Aortic Aneurysm
Incidence 5 – 10 cases per 100.000 inhabitants USA Clouse WD et al (1998) JAMA 280(22):1926–1929 Definitions Aneu aorta asc, arch, descending aorta Asc: Dil > 50% refrerred to normal values (norm: asc 33 ±4 mm; >41, arch: 24 ±3 mm; >30) Etiology atherosclerosis, tissue disease: Marfan, Loeys-Dietz-S.;Ehlers- Danlos-S.; Turner S. inherited familiar disease valve disease: BAV, UAV Incidence of aortic dissection x 5 – 10 infective disease: aortitis bacteria, viral, fungi inf, syphilitic, tuberculosis
S. Leontyev · M. Misfeld · F.W. Mohr: Chirurg 2014 · 85:758–766
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Morphology of aortic root
• Classification of aortic valve and aortic root shape
• Scheme provides more information related to aortic root with possible implications for screening patients for potential complications
– Aortic root dissection
• Type N aortic root most frequent, followed by Type A
• Type A aortic root seen more commonly in fusion of the right coronary and non-coronary leaflets
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Schaefer et al, Heart 2008; 94: 1634-1638
Epidemiology?
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Bicuspid valves
10 Jeger R. Presentation. SSC/SSCS Joint Annual Meeting Zürich, 10. June 2015
Two leaflets instead of three
Two symmetric leaflets
Three leaflets with raphe («seam»)
Elliptical valve orifice / Asymmetric
calcification
Possible additional intrinsic structural defect
of the aortic media with subsequent aortic
dilation
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More than 50% of surgical valve replacement take place in bicuspid or unicuspid aortic valves
0%
10%
20%
30%
40%
50%
60%
70%
80%
0
50
100
150
200
250
300
350
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21–30 31–40 41–50 51–60 61–70 71–80 81–90 91–100
Prevalence of Bicuspid Valve Disease in sAVR Patients
Unicuspid Bicuspid Tricuspid % Bicuspid
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Roberts and Co, Frequency by Decades of Unicuspid, Bicuspid, and Tricuspid Aortic Valves in Adults Having Isolated Aortic Valve Replacement for Aortic Stenosis, With or Without Associated Aortic Regurgitation. Circulation 2005,111(7):920-5.
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54 y, m, asymptomatic, TIA, cardiac source of emboli?
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Formation of ascending aortic anomalies • The fusion configuration directs non-parallel flow across the aortic valve
resulting in a jet directed toward the side of the aorta
• The resulting higher wall shear stress may promote aortic dilatation
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VermaS et al. N Engl J Med 2014;370:1920-9.
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Correlation between ascending aorta diameter and age in bicuspid aortic valve patients
• Dilatation of the ascending aorta was found to be correlated with age
• AS of the bicuspid valve was also found to increase with age
• AR though showed a higher incidence in mid-age groups
15 Morosin et al. J Cardiovasc Medicine 2016 epublished ahead of print
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Indications for AVR for Chronic AR. AR indicates aortic regurgitation; AVR, aortic valve replacement (valve repair may be appropriate in selected patients); ERO, effective regurgitant
orifice; LV, left ventricular; LVEDD, left ventricular end-diastolic dimension; LVEF, left ventricular ejection fraction; LVESD, left ventricular end-systolic dimension; RF, regurgitant fraction; and
RVol, regurgitant volume.
Nishimura R A et al. Circulation. 2014;129:e521-e643
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