title: [Studies on the relation between the uterine contraction and the fetoplacental function (author's transl)].
abstract: Uterine contractions were recorded with external tocodynamometer in the 2nd and the 3rd trimesters and their connections with various fetoplacental parameters were studied in view of maternal urinary E3, plasma P-LAP, CAP, E3, AFP and HSAP. The obtained results were summarized as follows; 1) During normal pregnancy, r between uterine contraction and gestational weeks was +0.45 (p less than 0.01). 2) Fetoplacental functions improved as gestational weeks advanced. 3) A relation between any two of the above-mentioned fetoplacental parameters during normal pregnancy was statistically significant except the one between urinary E3 and AFP. 4) The partial coefficient correlation between uterine contraction and urinary E3 was -0.36, while the partial coefficient correlation between gestational weeks and urinary E3 was +0.69. 5) In the threatened abortion or labor, the uterine contractions were more frequent (T0 = 5.4) and the urinary E3 was lower (T0 - 2.2) than in the normal pregnancy. 6) As for the within-day variations, when uterine contractions were frequent, urinary E3 was found decreased (X0 2 = 7.59). 7) Use of beta-2 stimulant lowered plasma E3, but its withdrawal increased the E3 level.
mesh_terms: D004964:Estriol / Q000097:blood / Q000652:urine; D005260:Female; D005333:Fetus / Q000502:physiology; D006801:Humans; D007752:Obstetric Labor, Premature / Q000503:physiopathology; D010920:Placenta / Q000502:physiology; D010925:Placental Function Tests; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D011263:Pregnancy Trimester, Third; D014590:Uterine Contraction; D000509:alpha-Fetoproteins / Q000032:analysis
chemical_list: D000509:alpha-Fetoproteins; D004964:Estriol