Abstract
We examined 70 postpartum women with postpartum subinvolution of the uterus and hypotonic contractile dysfunction of the uterus in 2022–2024. The comparison group consisted of 19 postpartum women with a physiological course of labor and the postpartum period. The content of oxytocin, nitric oxide, monoamine oxidase, potassium and calcium in blood serum was studied. In postpartum women with impaired contractile function of the uterus, the calcium content was slightly reduced (1.15 times) compared to healthy women (p = 0.0467), but the values of oxytocin and potassium did not differ significantly from the control group. In postpartum women with uterine subinvolution, an increase in monoamine oxidase was observed in comparison with the parameters of healthy women by 1.92 times (p = 0.021) and serum cholinesterase by 2.0 times compared with physiological labor (p = 0.001). Thus, the severity of clinical symptoms of uterine subinvolution and its hypotonic dysfunction is associated with the intensity of neurohumoral regulation of the uterus.
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