Maximum Aortic Valve Opening Phase for Annulus Sizing in Pre-TAVR CTA

Academic Radiology
Nam Ju LeeHarold Litt

Abstract

The optimal phase for the measurement of the aortic annular area for transcatheter aortic valve replacement (TAVR) is not standardized, although most agree that systolic measurements are preferred, when the annulus is larger. We hypothesized that the maximum annular area occurs at the cardiac phase of the maximum aortic valve opening (MAVO) and that this phase can be accurately and reproducibly assessed by visual inspection only. The aortic valve opening area was inspected visually by two readers to determine the MAVO phase. The annular area was measured at the MAVO phase and the typical systolic phase (35% of the R-R interval). Differences in the annular area that would change valve sizing for prostheses were noted. Fifty patients (mean age 81) were studied. Ninety percent had the MAVO at the 15%-25% R-R interval. There was high interobserver correlation (0.89) for determining the MAVO phase by visual inspection. For 49 out of 50 patients, the annular area was maximal at the MAVO phase. The mean difference in the annular area between the MAVO phase and 35% was 22.3 (±4.57) mm2. In 12% of the patients, the difference in the annular area changed the recommended size of a self-expanding prosthesis and would have altered the proce...Continue Reading

References

Apr 4, 2006·Journal of the American College of Cardiology·Gudrun M FeuchtnerSilvana Müller
Jun 21, 2007·AJR. American Journal of Roentgenology·Gudrun M FeuchtnerWolfgang Dichtl
Sep 5, 2008·The International Journal of Cardiovascular Imaging·Sanjay DoddamaniDaniel M Spevack
May 2, 2009·The American Journal of Cardiology·David A WoodJohn G Webb
May 18, 2010·European Journal of Cardio-thoracic Surgery : Official Journal of the European Association for Cardio-thoracic Surgery·Philipp BlankeGregor Pache
Oct 14, 2010·European Journal of Cardio-thoracic Surgery : Official Journal of the European Association for Cardio-thoracic Surgery·Andrea ColliAdria Escudero
Oct 26, 2010·The Annals of Thoracic Surgery·Miralem PasicRoland Hetzer
Feb 26, 2011·JACC. Cardiovascular Interventions·Edgar L W TayJohn G Webb
Mar 1, 2011·The Annals of Thoracic Surgery·Alexey DashkevichFriedhelm Beyersdorf
Mar 2, 2011·The International Journal of Cardiovascular Imaging·Linda M de HeerJolanda Kluin
Apr 16, 2011·JACC. Cardiovascular Imaging·Jonathon LeipsicJohn G Webb
Feb 4, 2012·Journal of the American College of Cardiology·David R HolmesJames D Thomas
Feb 10, 2012·The International Journal of Cardiovascular Imaging·Angela G BertasoStephen G Worthley
Mar 27, 2012·The New England Journal of Medicine·Raj R MakkarUNKNOWN PARTNER Trial Investigators
Mar 27, 2012·The New England Journal of Medicine·Susheel K KodaliUNKNOWN PARTNER Trial Investigators
May 4, 2012·European Journal of Cardio-thoracic Surgery : Official Journal of the European Association for Cardio-thoracic Surgery·Nicola BuzzattiOttavio Alfieri
Mar 16, 2013·JACC. Cardiovascular Imaging·Albert M KaselPartho P Sengupta

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