robert€smith ,€arnaud€van€linden ,€jörg kempfert...
TRANSCRIPT
Robert Smith1, Arnaud Van Linden2, Jörg Kempfert2, Julian Praetorius2, GerhardSchuler2, Friedrich Mohr2, Thomas Walther2
1. Cardiopulmonary Research Science and Technology Institute (CRSTI):Dallas, TX
2. Heart Center Leipzig: Leipzig, Germany
¡ Aortic stenosis is commonly associated withfunctional mitral regurgitation¡ Conventional AVR will often times reduce the
degree of severity of nonsevere, functionalMR¡ Transapical aortic valve implantation (TA
AVI)is emerging as an effective therapy for ASin the high risk population.¡ It is unknown how TAAVI will effect
concomitant MR in patients with AS.
¡ Determine if TAAVI will result in decreasedseverity of nonsevere, functional MR in highrisk patient being treated for severe AS.¡ Hypothesis: It will reduce the severity of MR.
MR (TEE)MR (TEE) PreopPreop TTETTE Post op TTEPost op TTE
n 224 192
No MR 7% 23%
Mild MR 61% 56%
Moderate MR 30% 21%
Severe MR 2%
¡ Single center study¡ Patients:§ TAAVI for severe AS§ Nonsevere, functional MR§ One – year follow up§ Implantation method welldescribed
¡ Surface 2D Echocardiogram§ Preoperative§ One year§ Measured:
Semiquantitative grade MRVena contracta width
¡ Statistical analysis§ Standard univariate analysis performed§ P<0.05 considered statistically significant
Patient CharacteristicsPatient Characteristics No. (%) or MeanNo. (%) or Mean ±± SDSDAge 82.4 ± 4.9
BSA, m2 2.59 ± 0.2
BMI, kg/m2 25.3 ± 3.5
Female 34 (85)
Atrial fibrillation 10 (25)
Pacemaker 5 (12.5)
Prior cardiac surgery 11 (27.5)
Porcelain aorta 2 (5)
Diabetes 15 (36.6)
Chronic lung disease 19 (47.5)
Renal failure 1 (2.4)
PatientPatient CharacteristicCharacteristic No.No. (%) or Mean(%) or Mean ±± SDSDSTS Score 15.4 ± 8.7
Logistic Euro Score 28.8 ± 12.5
NYHA class III/IV 39 (97.5)
EchoEcho Before TABefore TAAVIAVI After TAAfter TAAVIAVI (1yr)(1yr) P valueP value
AV pk grad (mmHg) 72.6 ± 24.6 16.6 ± 6.3 0.000
AV mn grad (mmHg) 44.2 ± 17.1 9.1 ± 3.8 0.000
LVEF% 55.5 ± 15.8 58.4 ± 14.5 0.416
LVIDd 4.65 ± 0.7 4.83 ± 0.8 0.310
LVIDs 3.20 ± 0.8 3.32 ± 0.9 0.602
TR grade0123
13 (32.5)19 (47.5)
8 (20)0 (0)
16 (40)16 (40)7 (17.5)1 (2.5)
0.588
EchoEcho Before TABefore TAAVIAVI After TAAfter TAAVIAVI (1yr)(1yr) P valueP value
MR grade 0.001
0 0 (0) 7 (17.5)
1 24 (60) 28 (70)
2 16 (40) 5 (12.5)
VCW (cm) 0.34 ± 0.14 0.23 ± 0.16 0.005
¡ MR improved: 20(50%)
¡ Same: 17 (42.5%)
¡ Worsened: 3 (7.5%)
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Pre TAAVI
1yr F/U
Moderate MR
Mild MR
No MR
¡ Patients undergoing TAAVI were at highsurgical risk as indicated by the STS scoresand Logistic Euro scores.¡ As expected, AV gradients were significantly
reduced one year after TAAVI.¡ MR was significantly reduced at oneyear
follow up by both semiquantitative measure(MR grade) and by quantitative measure(VCW).
¡ In patients undergoing TAAVI, conservativetreatment of nonsevere, functional MR is aviable option for this highrisk cohort.