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  • Title: Right ventricular dysfunction after surgical left ventricular restoration: prevalence, risk factors and clinical implications.
    Author: Couperus LE, Delgado V, van Vessem ME, Tops LF, Palmen M, Braun J, Verwey HF, Klautz RJM, Schalij MJ, Beeres SLMA.
    Journal: Eur J Cardiothorac Surg; 2017 Dec 01; 52(6):1161-1167. PubMed ID: 28655192.
    Abstract:
    OBJECTIVES: Surgical left ventricular (LV) restoration (SVR) induces changes in LV systolic and diastolic function that may affect postoperative right ventricular (RV) function. This study aimed to evaluate the long-term effect of SVR on RV function, with specific focus on determinants and prognostic implications of RV dysfunction. METHODS: Eighty-six patients (age 60 ± 10 years, 73% male) with clinical and echocardiographic follow-up 2 years after SVR were included. RV dysfunction was defined as RV fractional area change <35%. The association between RV dysfunction at follow-up and clinical and echocardiographic characteristics and outcome was investigated. RESULTS: RV dysfunction at follow-up was present in 40% of patients and was associated with worse preoperative RV fractional area change (39 ± 9 vs 46 ± 7%, P < 0.01), pulmonary hypertension (18 vs 4%, P = 0.03) and higher follow-up LV filling pressures (E/E' ratio 23 ± 8 vs 15 ± 8, P = 0.02). At follow-up, patients with RV dysfunction were more frequently in New York Heart Association Class III or IV (30 vs 12%, P = 0.04) and 5-year mortality, heart transplantation and LV assist device implantation rate was increased (49 vs 17%, P < 0.01) as compared to patients with normal RV function. CONCLUSIONS: RV dysfunction after SVR was observed in 40% of patients and was associated with preoperative RV dysfunction, presence of pulmonary hypertension and an increase in LV filling pressures at follow-up. Patients with RV dysfunction after SVR had worse clinical functioning and outcome as compared to patients with normal RV function.
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