The purpose of this study was to compare degree of complication and discomfort between application & non - application of a sand bag after 3hours, 6hours, 18hours of a cardiac catheterization. The results were as follows: 1) There was no difference in a degree of occurrence of a complication and pain of the femoral punture site between application and non-application of a sand bag after the cardiac catheterization. 2) A degree of a discomfort between application and non-application of a sand bag after the cardiac catheterization recorded the highest scores in the application group of a sand bag 6 hours after the cardiac catheterization.