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Table 2 Analysis of wall shear stress in patients with sinus prosthesis, tube prosthesis and healthy subjects

From: 4D flow CMR analysis comparing patients with anatomically shaped aortic sinus prostheses, tube prostheses and healthy subjects introducing the wall shear stress gradient: a case control study

WSSavg Pat SP Pat TP Healthy p p
Mean ± SD 95% CI Mean ± SD 95% CI Mean ± SD 95% CI all SP vs. TP Healthy vs. SP Healthy vs. TP
Bulb 0.85 ± 0.35 0.64; 1.06 0.96 ± 0.37 0.66; 1.25 0.92 ± 0.23 0.79; 1.05 0.79 0.53 0.56 0.80
Aao 0.57 ± 0.13 0.49; 0.65 0.82 ± 0.28 0.59; 1.05 0.60 ± 0.12 0.53; 0.66 0.05 0.02 0.61 0.03
dAAo 0.56 ± 0.13 0.48; 0.63 0.59 ± 0.16 0.46; 0.72 0.65 ± 0.15 0.57; 0.73 0.36 0.66 0.13 0.39
AA 0.52 ± 0.13 0.45; 0.60 0.50 ± 0.23 0.32; 0.68 0.64 ± 0.11 0.57; 0.70 0.06 0.82 0.03 0.10
DD 0.51 ± 0.16 0.42; 0.61 0.53 ± 0.13 0.42; 0.64 0.59 ± 0.15 0.51; 0.67 0.45 0.82 0.25 0.38
DAo 0.68 ± 0.23 0.55; 0.81 0.68 ± 0.18 0.53; 0.83 0.65 ± 0.12 0.59; 0.72 0.97 0.99 0.72 0.70
max. WSSseg Pat SP Pat TP Healthy p p
Mean ± SD 95% CI Mean ± SD 95% CI Mean ± SD 95% CI all SP vs. TP Healthy vs. SP Healthy vs. TP
Bulb 1.19 ± 0.40 0.95; 1.43 1.73 ± 0.95 0.97; 2.49 1.17 ± 0.28 0.79; 1.05 0.58 0.11 0.88 0.07
Aao 0.97 ± 0.25 0.83 ± 1.12 1.83 ± 1.02 1.01; 2.26 0.82 ± 0.15 0.74; 0.90 0.03 0.02 0.61 0.03
dAAo 0.98 ± 0.28 0.81; 1.14 1.16 ± 0.40 0.84; 1.48 0.92 ± 0.16 0.82; 1.01 0.20 0.25 0.52 0.07
AA 0.80 ± 0.18 0.69; 0.90 0.80 ± 0.38 0.49; 1.10 0.84 ± 0.15 0.76; 0.93 0.08 0.99 0.53 0.71
DD 0.75 ± 0.29 0.58; 0.93 0.75 ± 0.19 0.60; 0.90 0.80 ± 0.15 0.72; 0.89 0.61 0.97 0.61 0.48
DAo 0.86 ± 0.27 0.71; 1.02 0.94 ± 0.19 0.79; 1.10 0.83 ± 0.12 0.76; 0.89 0.36 0.49 0.67 0.32
WSS gradient Pat SP Pat TP Healthy p p
Mean ± SD 95% CI Mean ± SD 95% CI Mean ± SD 95% CI all SP vs. TP Healthy vs. SP Healthy vs. TP
Bulb 0.75 ± 0.25 0.61; 0.89 1.43 ± 0.90 0.70; 2.15 0.56 ± 0.12 0.49; 0.62 < 0.01 0.03 0.02 < 0.01
Aao 0.79 ± 0.23 0.65; 0.93 1.64 ± 1.04 0.80; 2.47 0.47 ± 0.18 0.37; 0.57 < 0.01 0.02 < 0.01 < 0.01
dAAo 0.76 ± 0.31 0.58; 0.94 1.01 ± 0.30 0.77; 1.25 0.47 ± 0.11 0.40; 0.53 < 0.01 0.10 0.01 < 0.01
AA 0.54 ± 0.18 0.43; 0.64 0.52 ± 0.35 0.23; 0.80 0.37 ± 0.13 0.30; 0.44 0.07 0.88 0.02 0.02
DD 0.56 ± 0.27 0.41; 0.72 0.57 ± 0.19 0.42; 0.72 0.45 ± 0.15 0.36; 0.53 0.42 0.97 0.20 0.13
DAo 0.37 ± 0.19 0.26; 0.49 0.5 ± 0.21 0.34; 0.67 0.31 ± 0.06 0.27; 0.35 0.05 0.18 0.29 0.01
min. WSSseg Pat SP Pat TP Healthty p p
Mean ± SD 95% CI Mean ± SD 95% CI Mean ± SD 95% CI all SP vs. TP Healthy vs. SP Healthy vs. TP
Bulb 0.44 ± 0.36 0.23; 0.56 0.30 ± 0.16 0.18; 0.43 0.61 ± 0.21 0.49; 0.73 0.38 0.31 0.18 < 0.01
Aao 0.23 ± 0.10 0.17; 0.28 0.19 ± 0.17 0.05; 0.33 0.35 ± 0.18 0.24; 0.45 0.07 0.60 0.06 0.07
dAAo 0.22 ± 0.12 0.15; 0.29 0.15 ± 0.11 0.06; 0.24 0.45 ± 0.15 0.36; 0.54 < 0.01 0.25 < 0.01 < 0.01
AA 0.26 ± 0.15 0.18; 0.35 0.28 ± 0.23 0.09; 0.46 0.47 ± 0.11 0.41; 0.53 0.01 0.85 < 0.01 0.02
DD 0.24 ± 0.10 0.18; 0.30 0.22 ± 0.09 0.15; 0.29 0.36 ± 0.19 0.25; 0.46 0.09 0.65 0.08 0.07
DAo 0.49 ± 0.28 0.33; 0.65 0.44 ± 0.20 0.28; 0.60 0.52 ± 0.13 0.44; 0.59 0.37 0.66 0.77 0.30
  1. Values for all investigated wall shear stress (WSS) parameters at six measurement contours in the aorta are given. Results of all three groups were tested for significance using Kruskal-Wallis-Test (all). In the column on the far right all three groups were tested in pairs, employing Man-Whitney-U-Test (SP vs. TP, SP vs. Healthy, TP vs. Healthy, respectively). Significant differences are marked in bold type
  2. Aortic bulb [bulb]; ascending aorta (AAo); distal ascending aorta (dAAo); aortic arch (AA); ductus diverticulum (DD); descending aorta (DAo); SP sinus prosthesis; TP tube prosthesis