Abstract
Introduction. The number of patients that need repeated operations on aortic valve due to dysfunction or degeneration of previously implanted prosthesis is constantly increasing throughout the world because of the constant growth of number of operated patients. The aim of our study was to assess the clinical outcomes of repeated surgeries for aortic valves, held at the Heart Centre of the University of Leipzig (Germany) from 1994 to 2008. Materials and methods. The study included 155 patients, 86 patients of which have had aortic valve prosthesis without reconstruction of the aortic root (rAVS) and 69 patients aortic root replacement (rAVR). The average time between operations amounted to 6.7 ± 7.9 years for all patients; 2.9 ± 3.1 and 8.8 ± 6.7 years for patients with implanted mechanical and biological valves, respectively. Results. The findings showed early lethality of 4.5% for all patients (3.5% for rAVS without root and 5.8% for rAVR with root, p = 0.5). Five-and eight-year survival is 66 ± 5% and 61 ± 6% for all patients and does not differ between surgical groups. Left ventricular ejection fraction is less than 30% (OR 9.2, 95% CI 1.1 -80.3) and initial neurological deficit (OR 22.1, 95% CI 2.3 -197.4) were independent predictors of early mortality. Independent predictors of late mortality were: NYHA functional class IV (HR, 95% CI 2.2 = 1.5, p -3.2 < 0.01) and infective endocarditis (HR 2.2, 95% CI = 1.4 -3.1 p < 0.01). Conclusions. Thus, repeated surgeries on aortic valve is associated with the acceptable early and late survival.
Highlights
Фракция выброса левого желудочка менее 30% и исходный неврологический дефицит являются независимыми предикторами ранней летальности
The number of patients that need repeated operations on aortic valve due to dysfunction or degeneration of previously implanted prosthesis is constantly increasing throughout the world because of the constant growth of number of operated patients
Independent predictors of late mortality were: NYHA functional class IV (HR, 95% CI 2.2 = 1.5, p -3.2 < 0.01) and infective endocarditis (HR 2.2, 95% CI = 1.4 -3.1 p < 0.01)
Summary
РАННИЕ ОСЛОЖНЕНИЯ И ОТСРОЧЕННЫЕ РЕЗУЛЬТАТЫ ПОВТОРНЫХ ОПЕРАЦИЙ НА АОРТАЛЬНОМ КЛАПАНЕ. Ввиду постоянного роста популяции пациентов, перенесших протезирование аортального клапана, количество нуждающихся в проведении повторных операций на клапанном аппарате сердца в связи с дисфункцией или дегенерацией ранее имплантированных протезов постоянно увеличивается. Цель нашего исследования заключалась в оценке клинических результатов повторных хирургических вмешательств на аортальном клапане, проведенных на базе Центра сердца Университета Лейпцига (Германия) с 1994 по 2008 годы. В исследование были включены 155 пациентов, из которых 86-ти провели репротезирование аортального клапана без реконструкции корня аорты (рПАК) и 69 пациентам протезирование корня аорты (ПКА). Установлено, что ранняя летальность составляет 4,5% для всех пациентов (3,5% для ПАК без корня и 5,8% для рПКА, p = 0,5). Пяти- и восьмилетняя выживаемость составляет 66 ± 5% и 61±6% для всех пациентов и не различается между хирургическими группами.
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