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In the March and April numbers of the American Journal of Obstetrics, may be found a most interesting article by Dr. A. F. A. King, of Washington, entitled " A New Explanation of the Renal Troubles, Eclampsia, and other Pathological Phenomena of Pregnancy and Labor." The purpose of the paper is to present a new explanation (as the author thinks) of the etiological relation between pregnancy and the nephritic derangements that so often attend it; though the paper does not deal with renal difficulties alone, but other correlative pathological states also.
Passing over the preliminary discussion, though it is interesting, we come to the following brief statement of the theory: Disturbances in the renal circulation and renal functions are produced chiefly by pressure of the gravid uterus upon the abdominal aorta or its branches, or upon the vena cava or its branches, or upon both or all of these, in consequence