Dilatation of Aortic Grafts Over Time: What to Expect and When to be Concerned

Schroeder, Torben V.; Eldrup, Nikolaj; Just, Sven; Hansen, M.A.; Nyhuus, Bo; Sillesen, Henrik

doi:10.1053/j.semvascsurg.2009.04.002

Cited by 10 publications

(8 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the tests described in the current study were performed in a controlled manner and along two directions. Though Schroder et al (15) also found that dilatation was most pronounced in the first three months, longer-term controlled experiments as described here are needed to determine whether and how much the graft properties would further decline as a function of time and how, this could increase the potential risk of aneurysm formation and failure as a clinical consequence.…”

Section: Discussionmentioning

confidence: 74%

“…However, although Dacron and ePTFE are considered biologically stable, even in these grafts dilatation is commonly reported, probably due to the degenerative effect of tissue fluids and enzymes (14). Specifically for ePTFE, Schröder et al (15) investigated over 100 patients with ePTFE grafts with both computerized tomography (CT) and ultrasound (US), and noted a significant dilatation in graft diameter (12.5%), especially in the first three months after implantation. Also Doble et al reported a 50% decrease in tensile strength and 61% decrease in total elongation of ePTFE grafts explanted after an average of 74 weeks from children with congenital heart disease (16).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

In situ Evolution of the Mechanical Properties of Stretchable and Non-Stretchable ePTFE Vascular Grafts and Adjacent Native Vessels

et al. 2014

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 74%

Section: Introductionmentioning

confidence: 99%

In situ Evolution of the Mechanical Properties of Stretchable and Non-Stretchable ePTFE Vascular Grafts and Adjacent Native Vessels

et al. 2014

View full text Add to dashboard Cite

show abstract

“…12,33 however, the large number of observational studiesoften not randomized -has not brought additional evidences to elucidate the clinical impact of long-term aortic grafts dilation. a recent report from schroeder et al 34 could not demonstrate a direct association between graft dilation and general surgical complications; neither was it possible to correlate graft dilation to aneurysmal or occlusive pathology. still, a more pronounced dilation was found in hypertensive patients, suggesting the need of both blood pressure control and CT scan monitoring in the follow-up.…”

Section: Abdominal Aortamentioning

confidence: 87%

The long-term follow-up of large-diameter Dacron® vascular grafts in surgical practice: a review

et al. 2019

View full text Add to dashboard Cite

synthetic grafts have been widely used in cardiac and vascular surgery since the mid-1970s. Considering the relative lack of randomized clinical trials or systematic analyses in the field of prosthetic large vessel diameter replacement, we reviewed the literature on the long-term performance and surgical management of complications of dacron ® grafts in both thoracic and abdominal aorta reconstruction and in the pediatric population. Medline, embase and Cochrane library databases were searched for meta-analyses, reviews, clinical trials, and case reports pertinent to the study object. aortic replacement with dacron ® prostheses is widely performed with acceptable outcome and a relatively low rate of graftrelated and postimplantation complications, such as rupture, infection and fistulization. however, progressive dilation and mechanical failure of the grafts represent the most worrisome complication in all the districts analyzed. The emerging concept of the mismatch in the biomechanical properties between the prosthetic material and native aorta is thought to be at the root of these complications leading to even more daunting consequences when the ascending aorta is involved. indeed introduction of a non-compliant prosthesis in place of the native ascending aorta can exert detrimental effects not only at the level of the anastomosis, leading to pseudoaneurysm, but also can influence the optimal performance of the aortic root complex with consequent valve dysfunction and ventricular hypertrophy. albeit confirming their overall successful performance, this review launches a warning on the current liberal use of non-compliant grafts in aortic position, remarking the need for alternative vascular conduits mimicking the native artery compliance.

show abstract

“…29 As far as dimensional stability is concerned, PTFE is preferable to Dacron since data indicates that the latter tends to dilate more than PTFE. 30 Despite the several advantages claimed by ePTFE, studies regarding abrasion resistance show a much lower resistance of these fabrics when compared with PET grafts. 18 ePTFE grafts are normally manufactured by an extrusion process.…”

Section: Polyethylene Terephthalatementioning

confidence: 99%

Mechanical properties of stent–graft materials

Santos

Rodrigues

Figueiredo³

et al. 2012

Proceedings of the Institution of Mechanical Engineers, Part L:

View full text Add to dashboard Cite

An aneurysm is a localized blood-filled dilatation of an artery whose consequences can be deadly. One of its current treatments is endovascular aneurysm repair (EVAR), a minimally invasive procedure in which an endoprosthesis, called a stentgraft, is placed transluminally to prevent wall rupture. 2Early stent-grafts were custom designed for the patient through the assembling of off-the-shelf components by the operating surgeon. However, nowadays, stentgrafts have become a commercial product. The existing endoprostheses differ in several aspects, such as shape design and materials, but they have in common a metallic scaffold with a polymeric covering membrane. This paper aims to gather relevant information for those who wish to understand the principles of stent-grafts and even to develop new devices. Hence, a stent-graft classification based on different characteristics is presented, and the significant features of an ideal device are pointed out. Additionally, the materials currently in use to fabricate this type of prosthesis are reviewed and new materials are suggested.

show abstract

Dilatation of Aortic Grafts Over Time: What to Expect and When to be Concerned

Cited by 10 publications

References 15 publications

In situ Evolution of the Mechanical Properties of Stretchable and Non-Stretchable ePTFE Vascular Grafts and Adjacent Native Vessels

In situ Evolution of the Mechanical Properties of Stretchable and Non-Stretchable ePTFE Vascular Grafts and Adjacent Native Vessels

The long-term follow-up of large-diameter Dacron® vascular grafts in surgical practice: a review

Mechanical properties of stent–graft materials

Contact Info

Product

Resources

About