Glutaraldehyde-preserved pericardial allografts for pericardial closure
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Homologous pericardial grafts, preserved with glutaraldehyde, show promise for loose pericardial closure. This technique minimizes adhesions, potentially easing future cardiac reoperations.
Area of Science:
- Cardiovascular Surgery
- Biomaterials Science
- Surgical Innovation
Background:
- Repeat cardiac surgery presents increased difficulty due to adhesions between the heart and mediastinal structures.
- Pericardial closure is a strategy to mitigate adhesion formation and reduce reoperation complexity.
Purpose of the Study:
- To investigate the feasibility of loose pericardial closure using homologous pericardial grafts.
- To evaluate the efficacy of glutaraldehyde-preserved pericardial allografts in preventing adhesions and assessing graft integration.
Main Methods:
- Glutaraldehyde-preserved pericardial allografts were implanted in 10 mongrel dogs for loose pericardial closure.
- Grafts were assessed grossly and histologically after a mean of 6.7 months (range 6-8 months).
- Evaluation focused on adhesion formation, dissectibility, inflammatory response, and infection.
Main Results:
- Minimal and easily dissectible adhesion formation was observed around the allografts.
- The pericardial allografts did not elicit a significant inflammatory response.
- No infections were reported following graft placement.
Conclusions:
- Glutaraldehyde-preserved pericardial allografts are a feasible option for loose pericardial closure.
- This method shows potential for reducing adhesions and facilitating future cardiac reoperations.
- Further investigation into this technique is warranted for clinical application.
Abstract:
Repeat cardiac surgery is significantly more difficult than the original surgery. Pericardial closure to limit adhesion formation between the heart and mediastinal structures and thus reduce the increased difficulty of reoperation has been considered. To investigate the feasibility of effecting loose pericardial closure with homologous pericardial grafts, glutaraldehyde-preserved pericardial allografts were implanted in 10 mongrel dogs. After a mean period of 6.7 months (range 6 to 8 months) the grafts were studied grossly and histologically. Adhesion formation was minimal and the adhesions were easily dissectible. The allografts evoked no significant inflammatory response. No infections resulted from graft placement. It is concluded that glutaraldehyde-preserved pericardial allografts may be useful to effect pericardial closure and deserve further investigation in this regard.