Abstract

AbstractA comparative study of flow measurements in model experiment by using a thermocouple method and an electromagnetic flowmeter was done, with the result that the flow waves shown by both apparatuses were seen to be quite analogous.Furthermore, the influence of uterine artery occlusion on placental blood flow was studied using the thermocouple method in comparison with measuring blood flow in a uterine artery by using an electromagnetic flowmeter in 5 late pregnant dogs. Both flows revealed almost the same pattern, however, the placental blood flow changes were more gradual than that of the uterine arterial blood flow.We found that the thermocouple method is useful to measure placental blood flow on the maternal side.

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