Techniques for determining average value of an arterial blood pressure parameter of an examined subject are disclosed. A pressure device is used to apply changing pressure conditions over a body part of a subject and generate pressure measurement data indicative of the pressure applied. A first measuring unit measures blood-pressure-pulse related signals in the pressure-affected body part, and generate blood-pressure-pulse related measurement data indicative thereof, and a second measuring unit measures blood-pressure-pulse related signals in a pressure-free body part of the examined subject, and generate reference blood-pressure-pulse related measurement data indicative thereof. A control unit is used to operate the pressure device to apply the changing pressure conditions over the pressure-affected body part and simultaneously operate the first and second measuring units, determine an initial blood pressure parameter value of the subject based on the measurement data from the pressure device and from the first measuring unit, determine a correction factor based on the measurement data from the second measuring unit and from the first measuring unit, and determine the average blood pressure parameter of the examined subject based on the initial blood pressure parameter value and the correction factor.
