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  • Title: Quality of life and NYHA class 30 years after mechanical aortic valve replacement.
    Author: Maliwa MA, van der Heijden GJ, Bots ML, van Hout BA, Casselman FP, van Swieten H, Vermeulen FE.
    Journal: Cardiovasc Surg; 2003 Oct; 11(5):381-7. PubMed ID: 12958549.
    Abstract:
    OBJECTIVE: (1) To evaluate the quality of life (QoL) scores, assessed with SF36 and EuroQol (EQ-5D), of long term survivors after mechanical aortic valve replacement (mAVR); (2) to study the association of QoL with NYHA score, number of major bleeding and thrombo-embolic events and follow-up time; (3) to compare QoL scores of long term mAVR survivors with QoL scores of other populations. METHODS: In total 312 patients had a mAVR between 1964 and 1974 at St. Antonius Hospital Nieuwegein (NL). Mean age at operation was 41 (sd=12). Mean postoperative NYHA class at 1-year follow-up was 1.7 (sd=0.7). In 2001 the survivors (n=78; 25%) were followed-up for late events, NYHA class and QoL scores. 69 patients (93%) returned completed questionnaires. RESULTS: Mean duration of follow-up was 30 years (sd=1.8). Mean age of responders was 65 years (sd=10, range 47-93). In 2001, NYHA class of responders was 2 (sd=0.9). The mean (sd) SF36 scores for responders were: 64 (29) for physical function, 64 (29) for role-physical, 80 (30) for bodily pain, 55 (25) for general health, 63 (23) for vitality, 73 (29) for social functioning, 70 (38) for role-emotional, 76 (18) for mental health. The mean EQ-5D score of responders was: 61 (13). These SF36 and EQ-5D scores are comparable to those of other populations (e.g. cancer, diabetes type-2, migraine, chronic liver disease and iliac artery occlusive disease and Dutch general population). For responders a moderate to high association of SF36 and EQ-5D scores and their NYHA scores (R2=0.36) was found. The number of major bleeding events, age, sex and survival time were not related to QoL. CONCLUSION: At long term follow-up (mean 30 years) of patients who had mAVR, QoL was relatively high; it was moderately to highly associated with their NYHA class; bleeding and thromboembolic events seem to be of little importance for the QoL at long term follow-up. QoL at long term follow-up of patients who had mAVR is comparable to other cross sectional designed studies with short term follow-up and other population.
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