[The relation between blood pressure and pulse and respiration rate in the borderline between orthostatic hypotension and normal regulation (author's transl)].

On the border between orthostatic normal regulation and hypotension, the size of the blood pressure amplitude in upright position is dependent upon the pulse frequency and the pulse respiration quotient. The relationship between the blood pressure amplitude and the pulse frequency is linear and lends itself to the setting up of an orthostasis quotient. As into this quotient enter only data of upright position, we speak of a "standing reaction", the result of which satisfactorily corresponds with certain criteria of the "standing-up reaction" noticed by us so far. The orthostasis quotient coincides better with the clinical picture than the results of the standing-up reaction and separates the orthostatically stable person more precisely than the orthostasis index.