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Background  This study examined the short-term reproducibility of non-invasive estimates of central and peripheral blood pressure and markers of central systolic loading (augmentation index [AIx; a measure of central systolic loading] and AIx75 [AIx standardised to 75 b·min -1  heart rate]) and the effect of posture and fasting state on these variables in patients with acute stroke.    Methods  Twenty-two acute stroke patients (72 ± 10y) had blood pressure measured using the SphygmoCor XCEL in supine and seated postures and whilst fasted and non-fasted.    Results  Acceptable short-term reproducibility (ICC >0.75) was reported for all peripheral and central variables in all conditions (ICC = 0.77–0.90) and for AIx and AIx75 in both fasted postures (ICC = 0.78–0.81). Food consumption significantly lowered all blood pressures ( p  <0.05; η 2  p  = 0.20–0.55). The seated posture resulted in a significantly greater AIx than supine ( p  <0.05; η 2  p  = 0.22). Fasting state had significant main effects on AIx and AIx75 ( p  <0.05; η 2  p  = 0.14–0.22).    Conslusions  Oscillometric estimates of central blood pressure have high short-term reproducibility in different postures and fasting states but markers of systolic load should be assessed whilst fasted. Fasting state has a large effect on central and peripheral blood pressures and on measures of systolic loading. It is important for clinicians to be aware of optimal assessment conditions without this impacting on patient wellbeing.    Trial registration   Clinical trial registry name :  NCT02537652 .

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Oscillometric central blood pressure and central systolic loading in stroke patients: Short-term reproducibility and effects of posture and fasting state