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6198374 
Journal Article 
Intracardiac prosthetic materials: I. Atrial septal patches 
Butterick, OD; Pate, JW 
1965 
Yes 
Journal of Surgical Research
ISSN: 0022-4804
EISSN: 1095-8673 
5 
4 
172-181 
Summaryo1.The fate of 161 plastic prostheses of various fabrications of Ivalon (polyvinylchloride), Teflon (tetrafluroethylene), Dacron (polyesters), Nylon, polyurethane and terpolymer placed within atrial septal defects of dogs is reported.2.All materials were “clinically” satisfactory.3.The degree of thrombosis, neoendocardial formation and tissue reaction are apparently related primarily to the chemistry of the prosthesis. Considering these factors, bleached Teflon, terpolymer and Dacron are most satisfactory.4.The fibrous tissue ingrowth into these materials (and thus the stiffness) after varying periods within the heart is shown to depend primarily upon the size of the pores (interstices) of the prostheses.