Contribution to the Study of Constitution.:3. Postural Blood Pressure Reflex in Expectant and Confined Mothers.

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Feature of the Postural Blocd Pressure Reflex in pregnant and lying-in women was studied. It showed marked deviations as summarized below from the normal feature : 1. Pregnancy affected restoration of the blood pressure after the posture change, from lying to sitting, in that sense that its retardation in most cases and failure of restoration in many cases were observed, especially in the earliest and latest stages of the pregnancy. 2. In the first half of the first week of the child-bed confinement, retardation and failure of blood pressure restoration, and also fluctuation in the restorative course were observed in many cases. Affection of the reflex restoration of the blood pressure depended on (i) the individual constitution, (ii) absence of previous experience of delivery, (iii) haemorrhage, and (iv) duration of the delivery. By the end of the first week of confinement, the feature of the postural blood pressure reflex generally regained the characteristics of normal women. 3. Both in expectant and confined mothers, diastolic pressure remained unchanged by the change of the posture, as is the case in the normal person. Thus the above described change in the reflex pattern concerns with the pulse pressure.
日本民族衛生学会の論文