BT_SQ 1.6 : measurement of blood pressure

A contribution from an ex chair of the primary exam :



I was working in theatre with a registrar who had a previous degree in physics, and we were discussing the issues of accuracy with arterial monitors, in particular the concept of damping… Together we determined that this diagram probably illustrates some important concepts.

TRUE/FALSE  System A is an example of a system where the natural resonance frequency of the system is similar to that being measured.

TRUE/FALSE  System B is the most ideal for a blood pressure measurement response because it provides the most accurate reading.

TRUE/FALSE  System C is an example of optimal damping as it provides a rapid response with minimal sacrificing of accuracy

TRUE/FALSE  In all systems the eventual measured pressure will be accurate

TRUE/FALSE  Damping is a reduction in the amplitude of an oscillation as a result of energy being drained from the system to overcome frictional or other resistive forces.

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