Criteria for succe
Criteria for success of heat prostheses
Success of prostheses may be claimed on the basis of complication that can be attributed to the prostheses itself and continues to allow blood flow (this does not necessarily mean good function) for example aorta bypass may :
1-remain patent and the patient remain symptom free ,
2-remain patent but the symptoms persist
3-occlude in time, but without return of symptoms or
4-occlude with immediate return of symptoms .
1,2 would both be classed as a success symptoms , while 3,4 would be failures
Compliance test method
1-visual inspection
2-determination of porosity, water permeability integral water permeability, leakage and water entry pressure
3-determination of strength
4-determination of usable length
5-determination of relaxed diameter
6-determination of pressurized diameter
7-determination of wall thickness
8-determination of suture retention strength
9-determination of kink diameter/ radius
10-determination of dynamic compliance (110)
