Fig. 1 | Hypertension Research

Fig. 1

From: Blood pressure measurement and nocturnal dipping patterns are heavily affected by body posture through changes in hydrostatic pressure between the arm and the heart

Fig. 1

Effect of body position on measured blood pressure: The upper-left panel (a) depicts the measurement setup. The ECG (blue), BP (grey), body position (yellow), and hydrostatic pressure (red) sensors are shown. The upper-right panel shows the recommended position for BP measurement with cuff at the heart level. We calibrated the measured hydrostatic pressure in that position to 0 mmHg (upper right panel b). The lower panel (c) shows examples of the effect of changes in body position on the measured blood pressure. The measured BP is lower than the true (heart level) BP when the arm is above the heart level and higher when below

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