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Hemodynamic performance of cryopreserved aortic homograft valves during midterm follow-up

^a Division of Clinical Physiology, Karolinska Hospital Department of Surgical Sciences, Karolinska Institute, Stockholm, Sweden
^b Division of Thoracic Surgery, Karolinska Hospital Department of Surgical Sciences, Karolinska Institute, Stockholm, Sweden

View larger version (21K): [in a new window]   Figure 1 Actuarial analysis of freedom from postoperative aortic regurgitation (AR) more than grade I, II and III, respectively, in 59 patients with a cryopreserved aortic homograft valve. Numbers of patients at risk and 95% confidence limits are indicated.

View larger version (15K): [in a new window]   Figure 2 Instantaneous postoperative risk of developing aortic regurgitation (AR) more than grades I, II and III, respectively, in 59 patients with cryopreserved aortic homograft valves.

View larger version (13K): [in a new window]   Figure 3 Maximum pressure differences (Pmax, calculated with the short form of the modified Bernoulli equation) at rest and during exercise in eight patients with prosthesis-patient mismatch (valve area index <1 cm2/m2, •) and in 23 patients with valve area index 1 cm2/m2 (). Mean and one SD are indicated.