The following are multiple choice questions (with answers) about medical knowledge.   We retrospectively identified 84 consecutive patients aged ≥80 years, who underwent a cardiac reoperation at the department for Cardiothoracic Surgery in the Heart&Vessel Center Bad Bevensen between January 2007 and 2013. Demographic profiles as well as operative data were analyzed, and the patients were prospectively followed. Patient's functional status and quality of life were assessed with the Barthel Index, New York Heart Association class and the short form-12 questionnaire. The mean age of the study group (61 men, 23 women) was 81.9 ± 1.9 years. Most redo-procedures were carried out after primary coronary artery bypass grafting (65%), primary aortic valve replacement (21%) and primary mitral valve replacement (6%). The most frequent actual surgical procedures were combined coronary artery bypass grafting and aortic valve replacement (26%), isolated coronary artery bypass grafting (19%), and isolated aortic valve replacement (19%). The mean length of hospital stay was 17 ± 15 days. In-hospital mortality counted for 32.1%. During follow up (29 ± 20 months) a further 19.0% of the patients died. The Barthel Index of the survivors was 89 ± 17 and their mean New York Heart Association class was 2 ± 1. A total of 93% of the patients were living at home. Summary scores of physical and mental health of the short form-12 questionnaire equalled those of an age- and sex-matched normative population.   **Question:** Cardiac reoperations in octogenarians: Do they really benefit?   (A) Yes   (B) No   (C) Maybe
['(A) Yes <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Yes \n (B) No \n (C) Maybe <> possible answers', "We retrospectively identified 84 consecutive patients aged ≥80 years, who underwent a cardiac reoperation at the department for Cardiothoracic Surgery in the Heart&Vessel Center Bad Bevensen between January 2007 and 2013. Demographic profiles as well as operative data were analyzed, and the patients were prospectively followed. Patient's functional status and quality of life were assessed with the Barthel Index, New York Heart Association class and the short form-12 questionnaire. The mean age of the study group (61 men, 23 women) was 81.9\u2009±\u20091.9 years. Most redo-procedures were carried out after primary coronary artery bypass grafting (65%), primary aortic valve replacement (21%) and primary mitral valve replacement (6%). The most frequent actual surgical procedures were combined coronary artery bypass grafting and aortic valve replacement (26%), isolated coronary artery bypass grafting (19%), and isolated aortic valve replacement (19%). The mean length of hospital stay was 17\u2009±\u200915 days. In-hospital mortality counted for 32.1%. During follow up (29\u2009±\u200920 months) a further 19.0% of the patients died. The Barthel Index of the survivors was 89\u2009±\u200917 and their mean New York Heart Association class was 2\u2009±\u20091. A total of 93% of the patients were living at home. Summary scores of physical and mental health of the short form-12 questionnaire equalled those of an age- and sex-matched normative population. \n   Cardiac reoperations in octogenarians: Do they really benefit? <> context@"]