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Its relationship to nocturnal blood pressure dipping status and major adverse cardiovascular events (MACE) are controversial and its association with vascular inflammation has not been examined. We aimed to investigate the relationship between the AASI, inflammation and nocturnal blood pressure dipping status and its association with MACE.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Adults (aged 18\u201380\u00a0years) who underwent 24-h ABPM for the diagnosis of hypertension or its control were included. The inflammatory markers measured were the neutrophil\u2013lymphocyte (NLR), platelet-lymphocyte (PLR) and monocyte-lymphocyte ratios (MLR). The primary MACE was a composite of cardiovascular death, acute limb ischaemia, stroke or transient ischaemic attack (TIA) or acute coronary syndrome.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A total of 508 patients (51.2% female) aged 58.8\u2009\u00b1\u200914.0\u00a0years were included; 237 (46.7%) were normal-dippers (\u2265\u200910% nocturnal systolic dip), 214 (42.1%) were non-dippers (0\u201310% dip) and 57 (11.2%) were reverse-dippers (&lt;\u20090% dip). The AASI was significantly higher among reverse (0.56\u2009\u00b1\u20090.16) and non-dippers (0.48\u2009\u00b1\u20090.17) compared with normal dippers (0.39\u2009\u00b1\u20090.16;<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.0001) and correlated with the NLR (r\u2009=\u20090.20;\u00a095% CI 0.11 to 0.29:\u2009&lt;\u20090.0001) and systolic blood pressure dipping % (r\u2009=\u2009\u2212\u20090.34; \u2212\u20090.42 to \u2212\u20090.26:<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.0001). Overall 39 (7.7%) patients had\u2009\u2265\u20091 MACE which included a total of seven cardiovascular deaths and 14 non-fatal strokes\/TIAs. The mean follow up was 113.7\u2009\u00b1\u200964.0\u00a0weeks. Increasing NLR, but not AASI or systolic dipping, was independently linked to MACE (overall model Chi-square 60.67;<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.0001) and MLR to cardiovascular death or non-fatal stroke\/TIA (overall model Chi-square 37.08;<jats:italic>p<\/jats:italic>\u2009&lt;\u20090.0001).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>In conclusion AASI was associated with blood pressure dipping and chronic inflammation but not independently to MACE. The MLR and NLR were independent predictors of MACE.<\/jats:p><\/jats:sec>","DOI":"10.1186\/s12872-021-01946-2","type":"journal-article","created":{"date-parts":[[2021,3,16]],"date-time":"2021-03-16T14:03:27Z","timestamp":1615903407000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":29,"title":["The relationship between ambulatory arterial stiffness, inflammation, blood pressure dipping and cardiovascular outcomes"],"prefix":"10.1186","volume":"21","author":[{"given":"Christopher J.","family":"Boos","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lin-Thiri","family":"Toon","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Halah","family":"Almahdi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,3,16]]},"reference":[{"issue":"10","key":"1946_CR1","doi-asserted-by":"publisher","first-page":"1953","DOI":"10.1097\/HJH.0000000000001940","volume":"36","author":"B Williams","year":"2018","unstructured":"Williams B, Mancia G, Spiering W, Agabiti Rosei E, Azizi M, Burnier M, et al. 2018 ESC\/ESH Guidelines for the management of arterial hypertension: the Task Force for the management of arterial hypertension of the European Society of Cardiology and the European Society of Hypertension. 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