In more than 40%, intravascular ultrasound (IVUS) leads to a different sizing strategy in aortic stent grafts.

<p>Shown are the distributions for changes in the sizing strategy made by IVUS in Valiant/Relay stent grafts (A) and GORE according to the recommended sizing chart (B). Further subdivision of the increases in stent graft sizes is presented in the smaller, right circles.</p

Example for measurement of the aortic diameter at level of the left subclavian artery (LSA) with Type B aortic dissention (+).

<p>CT (A) and IVUS (B) measurements at the level of the LSA (*). Penetraiting aortic ulcer (PAU) is shown in IVUS.</p

Example for assessment of aortic remodeling at the inferior edge of the stentgraft with sufficient remodeling (A) and impaired remodeling (B).

<p>A: True lumen (*) is fully expanded, no false lumen is definable. B: False lumen (+) represents almost two-thirds of total aortic area at this intersection.</p

Patient demographics.

<p>Patient demographics.</p

Measurements of true lumen (TL), false lumen (FL) and aortic diameter (AD) in both groups at the distal stent end (DSE), pulmonary artery (PA) and diaphragm (DP).

<p>Measurements of true lumen (TL), false lumen (FL) and aortic diameter (AD) in both groups at the distal stent end (DSE), pulmonary artery (PA) and diaphragm (DP).</p

Survival.

<p>Survival rate, as indicated by the rate of peri-procedural acute kidney injury (A) and to the need for catecholamine adminstration (B).</p

Patient Characteristics.

<p>Patient Characteristics.</p

Laboratory Values.

<p>Kaplan–Meier curve for survival of all consecutive patients undergoing TAVI according to post-procedural levels of creatinine (A), procalcitonin (B), brain natriuretic peptide (C), and troponin (D), comparing the upper quartile [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0167072#pone.0167072.ref004" target="_blank">4</a>] with the lower three quartiles [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0167072#pone.0167072.ref001" target="_blank">1</a>–<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0167072#pone.0167072.ref003" target="_blank">3</a>].</p

SAPS II.

<p>Receiver operating characteristic analysis for the accuracy of the EuroSCORE and SAPS II in predicting mortality among TAVI patients (A). Kaplan–Meier curve showing the survival of the study population for all consecutive patients undergoing TAVI, using a cut-off of 31.5 for SAPS II (B).</p