Apparatus for assessing the stress on the circulation of a person during assisted breathing by means of a respirator

A method for assessing the stress on the circulation of a person during assisted breathing, comprising:

• sensing an inspiratory phase and an expiratory phase of each respiratory cycle of a person,
• sensing in each case at least one minimum and one maximum amplitude of a circulation value within a single respiratory cycle,
• calculating a variation of the amplitudes of the circulation value occurring within the respiratory cycle,
• assigning each amplitude of the circulation value to the inspiratory phase or the expiratory phase, and
• determining one extreme amplitude of the circulation value from the amplitudes assigned to the inspiratory phase and the other extreme amplitude of the circulation value from the amplitudes assigned to the expiratory phase.

A method for assessing the stress on the circulation of a person during assisted breathing, comprising

• sensing an inspiratory phase and an expiratory phase of each respiratory cycle of a mechanically respirated person,
• sensing in each inspiratory phase and each expiratory phase at least one minimum and one maximum amplitude of a circulation value within single respiratory cycle,
• calculating a variation of the amplitudes of the circulation value occurring within each respiratory cycle, and
• using the variation of the amplitudes of the circulation values of the respiratory cycle as a basis for the decision over an increase or reduction in the end-expiratory pressure PEEP for respiration of the person.