TABLE 2.
The mean model parameters for the different aortic parts for the different age groups.
| Circumferential tension | Axial tension | |||||||
|---|---|---|---|---|---|---|---|---|
| Group | N | Segment | K (mm2/N) | A | B (MPa) | K (mm2/N) | A | B (MPa) |
| 27–35 years | 13 | Proximal segment | 0.040 ± 0.021 | 0.497 ± 0.166 | 0.096 ± 0.025 | 0.094 ± 0.022 | 0.247 ± 0.074 | 0.066 ± 0.024 |
| Distal segment | 0.047 ± 0.015 | 0.515 ± 0.142 | 0.091 ± 0.031 | 0.101 ± 0.027 | 0.261 ± 0.069 | 0.057 ± 0.023 | ||
| 36–45 years | 9 | Proximal segment | 0.040 ± 0.026 | 0.441 ± 0.085 | 0.079 ± 0.030 | 0.104 ± 0.042 | 0.294 ± 0.149 | 0.061 ± 0.039 |
| Distal segment | 0.045 ± 0.034 | 0.524 ± 0.063 | 0.081 ± 0.036 | 0.113 ± 0.046 | 0.309 ± 0.092 | 0.076 ± 0.027 | ||
| 46–55 years | 7 | Proximal segment | 0.051 ± 0.027 | 0.313 ± 0.043 | 0.070 ± 0.023 | 0.150 ± 0.072 | 0.138 ± 0.064 | 0.057 ± 0.030 |
| Distal segment | 0.050 ± 0.025 | 0.258 ± 0.075 | 0.066 ± 0.030 | 0.149 ± 0.071 | 0.129 ± 0.042 | 0.062 ± 0.033 | ||
| 56–65 years | 11 | Proximal segment | 0.071 ± 0.047 | 0.266 ± 0.103 | 0.058 ± 0.032 | 0.210 ± 0.138 | 0.110 ± 0.057 | 0.046 ± 0.043 |
| Distal segment | 0.064 ± 0.030 | 0.232 ± 0.053 | 0.063 ± 0.022 | 0.178 ± 0.070 | 0.108 ± 0.050 | 0.040 ± 0.019 | ||
| 66–75 years | 5 | Proximal segment | 0.063 ± 0.013 | 0.158 ± 0.070 | 0.069 ± 0.017 | 0.222 ± 0.142 | 0.075 ± 0.041 | 0.081 ± 0.101 |
| Distal segment | 0.055 ± 0.012 | 0.118 ± 0.041 | 0.114 ± 0.031 | 0.288 ± 0.211 | 0.132 ± 0.070 | 0.085 ± 0.041 | ||
| 76–86 years | 5 | Proximal segment | 0.102 ± 0.047 | 0.111 ± 0.048 | 0.058 ± 0.042 | 0.157 ± 0.104 | 0.086 ± 0.041 | 0.056 ± 0.053 |
| Distal segment | 0.076 ± 0.035 | 0.102 ± 0.036 | 0.068 ± 0.025 | 0.220 ± 0.067 | 0.076 ± 0.062 | 0.036 ± 0.023 | ||
| All | 50 | Proximal segment | 0.057 ± 0.037 | 0.333 ± 0.167 | 0.074 ± 0.031 | 0.148 ± 0.100 | 0.177 ± 0.116 | 0.060 ± 0.045 |
| Distal segment | 0.055 ± 0.027 | 0.337 ± 0.189 | 0.080 ± 0.032 | 0.157 ± 0.098 | 0.186 ± 0.108 | 0.058 ± 0.030 | ||
Note: Values are presented as mean ± standard deviation.