{'fraction_non_alphanumeric': 0.024520255863539446, 'fraction_numerical': 0.011727078891257996, 'mean_word_length': 5.26, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
[Aortic valvuloplasty in acquired valvular disease].

On the basis of the results of studying the morphology, biomechanics, and physiology of the aortic root and the cusps of the aortic valve the authors suggest a substantiated set of surgical manipulations which allow the patient's natural valve to be preserved. Coarse calcinosis of the cusps and fibrous ring of the aortic root is the only absolute contraindication for valvuloplasty. The authors' clinical experience consists of the first 100 operations. Hospital mortality--8.0%. With intraoperative appraisal of hemodynamics, good correction of the abnormality was achieved practically in all patients. The maximal follow-up period by April, 1991 was 5.5 years. During that period four patients were again subjected to operation because aortic insufficiency recurred. The authors recommend their experience with plastic operations on the aortic valve for wide clinical application.