Skip to main content

Table 4 Mean of the differences (mmHg; ± SD; 95% limits of agreement) using Bland-Altman analyses for the comparison of blood pressure assessment methods

From: Non-invasive continuous blood pressure monitoring (ClearSight™ system) during shoulder surgery in the beach chair position: a prospective self-controlled study

Surgical position

NIBP to CS-BP

IBP to CS-BP

IBP to NIBP

sys

MAP

dia

Sys

MAP

dia

sys

MAP

dia

Supine

7.3 (± 17.5;-27.1–41.7)

−4.7 (± 11.8;-28.0–18.2)

−0.4 (± 10.2;-20.3–19.6)

10.5 (± 19.5;-27.8–48.7)

−2.8 (± 15.3;-32.8–27.1)

−6.8 (± 13.3;-32.9–19.3)

0.6 (± 15.0;-28.8–29.9)

4.6 (± 13.3;-21.4–30.6)

−4.4 (± 11.9;-27.6–18.9)

Beach chair

9.8 (± 21.4;-32.1–51.7)

−0.9 (± 11.0;-24.0–22.2)

2.1 (± 8.6;-14.7–19.0)

10.4 (± 21.9;-32.5–53.2)

−1.6 (± 16.0;-32.9–29.7)

−5.0 (± 10.1;-24.7–14.8)

−7.3 (± 10.4;-27.7–13.1)

−3.0 (± 9.1;-20.8–14.7)

−7.8 (± 7.7;-22.8–7.3)

Combined

8.5 (± 19.6; − 30.1 – 47.0)

− 2.9 (± 11.7;-25.8–20.1)

0.9 (± 9.6; − 17.8 – 19.7)

10.4 (± 21.7; − 32.1 – 52.9)

− 2.6 (± 15.7;-33.4–28.2)

−6.5 (± 11.5; − 29.0 – 16.1)

−4.2 (± 12.8; − 29.3 – 21.0)

0.9 (± 11.3; − 21.3 – 23.0)

− 5.9 (± 9.6; − 24.8 – 13.0)

  1. IBP Invasive blood pressure, NIBP Non-invasive blood pressure, CS-BP ClearSight™ blood pressure, Sys Systolic, MAP Mean arterial pressure, dia diastolic