Abstract
The present study evaluated change in left ventricle (LV) biomechanics, layer-by-layer, following acute pressure unloading in patients with severe aortic stenosis (AS). In twenty-eight consecutive patients with severe AS who underwent transcatheter aortic valve replacement (TAVR), LV peak global longitudinal and circumferential strains of the endo-, midmyo- and epicardium were evaluated using multilayer speckle tracking echocardiography before, 1 week after, and 1 month after TAVR. Longitudinal and circumferential strains were significantly highest in the endocardium and lowest in the epicardium at baseline. At 1 month following TAVR, longitudinal strain significantly improved in all layers compared with the baseline [endocardium (%) -16.7 ± 3.8 vs. -18.6 ± 3.3, P = 0.01; mid-myocardium -14.4 ± 3.2 vs. -16.2 ± 3.5, P < 0.01; epicardium -12.4 ± 2.8 vs. -13.6 ± 2.6, P = 0.01], whereas LV ejection fraction and circumferential strain remained unchanged. Importantly, only those with LV hypertrophy demonstrated improved longitudinal strain [endocardium (%) -15.7 ± 3.0 vs. -18.7 ± 2.9, P < 0.01; mid-myocardium -13.6 ± 2.7 vs. -16.0 ± 2.5, P < 0.01; epicardium -11.8 ± 2.4 vs. -13.7 ± 2.3, P < 0.01]. The improvement in longitudinal stra...Continue Reading
References
Sep 1, 1992·European Heart Journal·B SchwartzkopffB E Strauer
Jan 30, 2002·Circulation·Kim RajappanPaolo G Camici
Feb 12, 2002·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Miguel A QuiñonesUNKNOWN Doppler Quantification Task Force of the Nomenclature and Standards Committee of the American Society of Echocardiography
Oct 13, 2005·American Journal of Physiology. Heart and Circulatory Physiology·Junjie ChenXin Yu
Dec 27, 2005·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Roberto M LangUNKNOWN European Association of Echocardiography
Jan 3, 2006·Heart·M BeckerR Hoffmann
Sep 27, 2006·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Noriaki IwahashiMasafumi Kitakaze
Nov 23, 2006·Journal of the American College of Cardiology·Partho P SenguptaBijoy K Khandheria
Sep 20, 2008·European Journal of Echocardiography : the Journal of the Working Group on Echocardiography of the European Society of Cardiology·Umar AdamuRainer Hoffmann
Aug 28, 2009·Heart·Dana CramariucKnut Matre
Sep 4, 2009·European Heart Journal·Victoria DelgadoJeroen J Bax
Feb 4, 2010·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Marina LeitmanZvi Vered
Feb 8, 2011·The American Journal of Cardiology·Shemy CarassoYoram Agmon
Apr 27, 2011·Journal of cardiovascular ultrasound·Satoshi Nakatani
Jun 15, 2011·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Seung-Pyo LeeYoung-Bae Park
Dec 2, 2011·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Eiichi HyodoRebecca T Hahn
Mar 2, 2012·European Journal of Cardio-thoracic Surgery : Official Journal of the European Association for Cardio-thoracic Surgery·Samer A M NashefUlf Lockowandt
Mar 28, 2012·Cardiovascular Ultrasound·Sebastian SchattkeFabian Knebel
Apr 26, 2012·European Heart Journal Cardiovascular Imaging·Christian Arvei MoenKnut Matre
Sep 7, 2012·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Ertunc AltiokRainer Hoffmann
Sep 12, 2012·Echocardiography·Yoshikazu OharaKatsuhito Yamamoto
Dec 1, 2012·The International Journal of Cardiovascular Imaging·Adam StaronPartho P Sengupta
Apr 16, 2013·JACC. Cardiovascular Imaging·Sebastian I SarvariThor Edvardsen
Oct 8, 2013·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Hala Mahfouz BadranMagdi Yacoub
Feb 18, 2014·The International Journal of Cardiovascular Imaging·Daisuke SakuraiSatoshi Nakatani
Apr 29, 2014·Circulation Journal : Official Journal of the Japanese Circulation Society·Yoshihiro SeoKazutaka Aonuma
May 6, 2014·The International Journal of Cardiovascular Imaging·Ines Paola MonteCorrado Tamburino
Dec 3, 2014·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Shemy CarassoYoram Agmon
Citations
Oct 27, 2018·Microcirculation : the Official Journal of the Microcirculatory Society, Inc·Yumeng XingCuizhen Pan
May 26, 2018·The International Journal of Cardiovascular Imaging·Marijana TadicMartin Genger
Jan 23, 2018·Echocardiography·Rine BakkestrømJacob E Møller
Sep 8, 2018·World Journal of Cardiology·Nidhish Tiwari, Kavisha Patel
Dec 1, 2020·The International Journal of Cardiovascular Imaging·Sara CiminoViviana Maestrini