Mechanical behavior

A study of the behavior of fibrin sealants when employed in combination with conventional sutures showed no improvement in the resistance or elasticity of biological tissue samples. However, a more homogeneous mechanical behavior was observed in sutured samples in which a fibrin glue was subsequently applied to the holes created by the suture. These results do not have a clear explanation and further studies will be required to confirm or refute their validity [10].

Table 9.1. Mean tensile stresses at the time of rupture of the samples

Series

No.

Mean (Mpa)

Standard deviation

95% Confidence interval

PPI

12

6.83

2.34

5.35, 8.32

PI

12

7.06

2.43

5.52, 8.61

PC

12

10.40

2.66

8.72, 12.10

PD

12

8.27

3.18

6.24, 10.29

PPD

12

8.70

2.71

6.98, 10.41

PPI: samples from the left side of the pericardial sac, sutured at a 45° angle and glued. PI: pericardium from the left side, sutured at a 45° angle. PC: control pericardium. PD: pericardium from the right side, sutured at a 90° angle. PPD: pericardium from the right side, sutured at a 90° angle and glued. PC versus PI: p = 0.027; PC versus PPI: p = 0.016.

PPI: samples from the left side of the pericardial sac, sutured at a 45° angle and glued. PI: pericardium from the left side, sutured at a 45° angle. PC: control pericardium. PD: pericardium from the right side, sutured at a 90° angle. PPD: pericardium from the right side, sutured at a 90° angle and glued. PC versus PI: p = 0.027; PC versus PPI: p = 0.016.

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