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  • Title: Target Organ Damage and Target Systolic Blood Pressure in Clinical Practice: The Campania Salute Network.
    Author: D'Amato A, Mancusi C, Losi MA, Izzo R, Arnone MI, Canciello G, Senese S, De Luca N, de Simone G, Trimarco B.
    Journal: Am J Hypertens; 2018 May 07; 31(6):658-664. PubMed ID: 29566163.
    Abstract:
    BACKGROUND: Lowering systolic blood pressure (SBP) below the conventional threshold (140 mm Hg) reduces left ventricular (LV) hypertrophy and incident cardiovascular (CV) events. We assessed whether different thresholds of SBP as the average value during follow-up (FU) have different impact on changes in target organ damage (TOD). METHODS: From the Campania Salute Network registry, we selected 4,148 hypertensive patients with average SBP-FU <140 mm Hg, and without history of prevalent CV or chronic kidney disease (i.e., <stage IV CKD). Patients were divided in "Tight" (SBP-FU <130 mm Hg) or "Usual" (SBP-FU ≥130) BP control. At baseline and at the last available control visit, we assessed LV mass index (LVMi, g/m2.7), carotid intimal-medial thickness (IMT, mm), and glomerular filtration rate by CKD-EPI equation (GFR, ml/min/1.73 m2) as markers of TOD. Time trend of TOD for tight and usual subgroups were compared, adjusting for significant confounders. RESULTS: During a median of 74 months (interquartile range: 35-108 months), 1,824 patients (44%) were classified as tight control. They were younger, with less prevalent obesity, diabetes, lower initial LVMi, and IMT, and were taking less Ca++-channel blockers during FU than the usual control subgroup (all P < 0.05). In both subgroups, there were no changes over time in LVMi and GFR, whereas the IMT increased during the FU (P < 0.004), with no significant effect of degree of SBP control. CONCLUSIONS: In a registry of treated hypertensive patients from a tertiary care center, progression of TODs is not related to average SBP during FU.
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