Central systolic blood pressure (cSBP) is an independent predictor of future cardiovascular disease. Unattended brachial SBP (bSBP) can eliminate the white-coat effect. However, unattended cSBP and unattended standing cSBP have never been reported. We aimed to compare bSBP and cSBP in attended, unattended, and unattended standing situations. We also aimed to compare the white-coat effect and unattended orthostatic BP change between bSBP and cSBP. Altogether, 104 hypertensive outpatients were included (mean age: 66.0 ± 9.8 years, 41.3% male, mean body mass index: 25.0 ± 4.5). Attended bSBP/cSBP values were 127.3 ± 15.7/119.2 ± 15.0, unattended bSBP/cSBP values were 122.7 ± 15.3/114.4 ± 15.1, and unattended standing bSBP/cSBP values were 123.6 ± 15.7/114.1 ± 14.8 mmHg (correlation coefficients/coefficients of determination between bSBP and cSBP: 0.971/0.943, 0.970/0.941, and 0.964/0.929, respectively; all p < 0.001). No significant difference was observed in the white-coat effect between bSBP and cSBP (4.6 ± 5.8 vs. 4.8 ± 5.7 mmHg). Although there was no significant difference between unattended sitting SBP and unattended standing SBP in terms of both bSBP and cSBP, a numerically small but significant difference was observed in the unattended orthostatic BP change between bSBP and cSBP (0.9 ± 8.0 vs. −0.3 ± 9.0 mmHg, p = 0.002). In conclusion, significant and strong correlations were observed between bSBP and cSBP in attended, unattended, and unattended standing BP measurements. The white-coat effect on bSBP was equivalent to that on cSBP. There was a numerically small but significant difference in the unattended orthostatic BP change between bSBP and cSBP.

中心收缩压 (cSBP) 是未来心血管疾病的独立预测指标。无人值守的肱动脉收缩压 (bSBP) 可以消除白大衣效应。然而，无人看管的 cSBP 和无人看管的站立 cSBP 从未被报道过。我们的目的是在有人参与、无人参与和无人参与的站立情况下比较 bSBP 和 cSBP。我们还旨在比较 bSBP 和 cSBP 之间的白大衣效应和无人照管的直立血压变化。总共包括 104 名高血压门诊患者（平均年龄：66.0 ± 9.8 岁，41.3% 男性，平均体重指数：25.0 ± 4.5）。有人看管的 bSBP/cSBP 值为 127.3 ± 15.7/119.2 ± 15.0，无人看管的 bSBP/cSBP 值为 122.7 ± 15.3/114.4 ± 15.1，无人看管的站立 bSBP/cSBP 值为 123.6 ± 15.7/114.1 ± 14.8 mmHg（相关系数/系数为bSBP 和 cSBP 之间的确定：0。分别为 971/0.943、0.970/0.941 和 0.964/0.929；全部p  < 0.001)。bSBP 和 cSBP 之间的白大衣效应未观察到显着差异（4.6 ± 5.8 对 4.8 ± 5.7 mmHg）。尽管在 bSBP 和 cSBP 方面无人看管的坐位 SBP 和无人看管的站立 SBP 之间没有显着差异，但在 bSBP 和 cSBP 之间的无人看管的直立位 BP 变化中观察到数值上很小但显着的差异（0.9 ± 8.0 vs. -0.3 ± 9.0毫米汞柱，p  = 0.002）。总之，在有人值守、无人值守和无人值守的站立血压测量中，bSBP 和 cSBP 之间存在显着且强的相关性。白大衣对 bSBP 的影响与对 cSBP 的影响相同。bSBP 和 cSBP 之间无人参与的体位血压变化在数值上存在微小但显着的差异。