Abstract
Purpose
To analyze the relationship among hiesho, premature delivery, premature rupture of membranes, weak pains, prolonged labor, and atonic bleeding.
Subjects and method
The study design was an exploratory descriptive study with subjects and also a retrospective cohort study. The study was conducted from October 2009 to October 2010 at six general hospitals equipped to handle premature infants and with obstetric and pediatric departments, in the Greater Tokyo Metropolitan Area. The subjects were 2,810 Japanese women in hospital after delivery. The study was carried out by collecting data from questionnaire surveys and medical records. By their submitting answers to the questionnaire, subjects were assumed to have given approval to be included in the study.
Results
Analysis was conducted on 2,810 women. Structural equation modeling was used to create a path diagram with five factors of hiesho and abnormal delivery as observed variables. Path coefficients were 0.11 (p<0.001) from hiesho to premature delivery, 0.12 (p<0.001) from hiesho to premature rupture of membranes, 0.15 (P<0001) from hiesho to weak pains, 0.14 (P<0.001) from hiesho to atonic bleeding, and 0.13 (P<0.001) from hiesho to prolonged labor. In each case hiesho had a positive influence. Path coefficients were 0.05 (p=0.013) from premature rupture of membranes to premature delivery, 0.07 (p<0.001) from premature rupture of membranes to weak pains, and 0.08 (P<0.001) from weak pains to atonic bleeding. The path coefficient between errors of weak pains and prolonged labor was 0.24 (p<0.001), showing that the two factors influenced each other.
Conclusion
Hiesho has an influence on all abnormalities of delivery: premature delivery, premature rupture of membranes, weak pains, prolonged labor, and atonic bleeding. Among these, premature rupture of membranes has an influence on premature delivery, premature rupture of membranes has an influence on weak pains, and weak pains have an influence on atonic bleeding. Weak pains and prolonged labor influence each other.
