| Popis: |
The authors appraised comparatively the 25 ball prosthesis (group 1), the rotational-disk prosthesis (group 2) and the prostheses (group 3) in 180 patients who underwent operation in the period between 1983 and 1988. The hospital lethality was 7.5% in group 1, 2.7% in group 2, and 4.8% in group 3. After dismissal from the clinic 98.2% of patients were studied in postoperative periods of 6 months to 5 years. Five-year survival after operation was 76.6 +/- 3.6%, 97.3 +/- 0.8%, and 87.7 +/- 1.2%, respectively. By the 5th postoperative year, no thromboembolic complications were encountered in 88.3 +/- 3.6% of patients in group 1, 97.3 +/- 0.8% of patients in group 2, and 91.5 +/- 2.4% of patients in group 3. The mean diastolic gradient was 7.05 +/- 0.75 mm Hg on the prosthesis, 3.98 +/- 0.44 mm Hg on the prosthesis, and 4.27 +/- 0.47 mm Hg on the prosthesis. At the time of the examination, 87.5% of group 1 patients, 88.2% of group 2 patients, and 87.1% of group 3 patients were related to I and II functional classes. |
