Internet Archive Scholar

The Impact of Valvuloarterial Impedance on Left Ventricular Geometrical Change after Transcatheter Aortic Valve Replacement: A Comparison between Valvuloarterial Impedance and Mean Pressure Gradient

Satoshi Yamaguchi, Yuka Otaki, Balaji K. Tamarappoo, Tetsuya Ohira, Hiroki Ikenaga, Jun Yoshida, Tarun Chakravarty, John Friedman, Daniel Berman, Florian Rader, Robert J. Siegel, Raj Makkar (+1 others)
2020 Journal of Clinical Medicine  

Preserved Fulltext

fulltext thumbnail
Web Archive Capture PDF (473.7 kB)
https://web.archive.org/web/20201005064623/https://res.mdpi.com/d_attachment/jcm/jcm-09-03143/article_deploy/jcm-09-03143.pdf

A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL. The file type is application/pdf.

Increase in left ventricular (LV) mass develops as a compensatory mechanism against pressure overload in aortic valve stenosis. However, long-standing LV geometrical changes are related to poor prognosis. The LV geometrical change occurs after transcatheter aortic valve replacement (TAVR). The present study aimed to investigate the relationship between improvement in valvuloarterial impedance (Zva) and change in LV mass index (LVMI) and the ratio of LVMI to LV end-diastolic volume index
more » ... EDVI). We compared these relationships to that between Zva and mean pressure gradient (MPG). Baseline and follow-up transthoracic echocardiograms of 301 patients who underwent TAVR from November 2011 to December 2015 were reviewed. Spearman correlation coefficient (ρ) was used to compare ΔLVMI and ΔLVMI/LVEDVI with Zva or MPG. The correlation between ΔZva and ΔLVMI (ρ = 0.47, p < 0.001) was superior to that between ΔMPG and ΔLVMI (ρ = 0.15, p = 0.009) (p for comparison < 0.001). The correlation between ΔZva and ΔLVMI/LVEDVI was statistically significant (ρ = 0.54, p < 0.001); in contrast, that of ΔMPG and ΔLVMI/LVEDVI was not. The improvement in Zva after TAVR was more closely related to LVMI and LVMI/LVEDVI reduction than MPG reduction.
doi:10.3390/jcm9103143 pmid:33003289 fatcat:ttbmz5msnvhzfougssemie5v7i
DOAJ
Citation

Satoshi Yamaguchi, Yuka Otaki, Balaji K. Tamarappoo, Tetsuya Ohira, Hiroki Ikenaga, Jun Yoshida, Tarun Chakravarty, John Friedman, Daniel Berman, Florian Rader, Robert J. Siegel, Raj Makkar, Takahiro Shiota. "The Impact of Valvuloarterial Impedance on Left Ventricular Geometrical Change after Transcatheter Aortic Valve Replacement: A Comparison between Valvuloarterial Impedance and Mean Pressure Gradient." Journal of Clinical Medicine 9.10 (2020) 3143