Bed rest is recommended after cardiac catheterization, this frequently results in back pain, urinary retention, and hemodynamic instability. Aim of the Study: to evaluate the effect of gradual sitting position on recovery parameters and satisfaction of patients' post trans-femoral catheterization. Subjects and method: Quasi experimental pretest-posttest research design. Setting: It was conducted at cardiac catheterization department at El-Mahalla Cardiac Center. A purposive sample of 60 patients, divided equally into study group (received gradual change position from flat to sitting) and control group (who received routine hospital care i.e. flat position for 6 hours). Tool: "patient's assessment sheet" consisted of 4 parts, "Demographic data"; "Clinical data"; "Patient recovery parameters", and "patient satisfaction scale". Results: There was reduction in back pain severity for study group with statistically significant difference p value at (^MCp <0.001^*) after 4^th and 6^th hours, absent of vascular complications (hematoma and bleeding) for all patients (100%) in both groups and reduced urinary retention in the study group with highly statistically significant difference p value at (^MCp <0.001^*). The mean level of satisfaction was highly significant p value at (<0.001*) after four and six hours. Conclusion: the gradual change position from flat to sitting position had statistically significant positive effect on recovery parameters including reducing back pain and urinary retention without changes in vital signs, neurovascular status and vascular complications incidence in the study group. Recommendation: Enroll changing of patients position in post cardiac catheterization care.