A prospective study was conducted in 197 patients (mean age 25.0 ± 2.4 years). Established clinical and laboratory-instrumental criteria for various op-tions for postpartum subinvolution of the uterus: 1) subinvolution without clinical signs of an infectious and inflammatory process – leukocytosis up to 10×109/l, the number of stab neutrophils 3–4 %, ESR up to 20 mm/h, PCT less than 0,05 ng/ml, hsCRP level less than 10 mg/l, LII less than 1 unit, PLA2 activity 2, 5–4 IU/l, IR of uterine arteries less than 0.5; expansion of the uterine cavity up to 15 mm according to ultrasound; uter-ine tone less than 5.4 mHg 2) subinvolution with minor clinical signs of inflammation – leukocytosis 10–11×109 / l, the number of stab neutrophils 5–7 %, ESR 20–30 mm / h, PCT 0,05–1,5 ng/ml, the level of hsCRP 10–20 mg / l, LII – 1–3 units, activity PLA2 4–7.0 IU/l, IR of uterine arteries less than 0.5, expansion of the uterine cavity 15–20 mm; uterine tone less than 5.4 mHg 3) subinvolution complicated by HPE – leukocytosis 12×109/l or more, the number of stab neutrophils 8 % or more, ESR – more than 30 mm/h, PCT more than 1,5 ng/ml, hsCRP level more than 20 mg/l, LII more than 3 units, PLA2 activity more than 7.0 IU/l, IR of the uterine arteries is less than 0.5, the expansion of the uterine cavity is more than 20 m, uterine tone less than 5.4 mHg 2. A strong inverse relationship was found between uterine tone and uterine cavity size (correlation coefficient r = –0.9751; p < 0.001; 95 % confidence in-terval) in patients with SCI. 3. A decrease in the index of resistance of the uterine arteries to 0.47 ± 0.02 c.u. was established. (p = 0.022) in a strong direct associative relationship with the size of the uterine cavity (correlation coefficient r = 0.93712; p = 0.001; 95 % confidence interval).

Experiments were performed on rats anesthetized with urethane and nembutal. Intrathecal administration of a nitric oxide inhibitor L-NAME (60 mg) into the cerebrospinal fluid of the thoracic spinal cord was followed by a 40-45% decrease in tonic activity of efferent fibers of the abdominal aortic nerves. L-NAME reduced a reflex increase in the rate of efferent impulses, which was induced by tetanic stimulation of afferent C-fibers in the mesenteric nerve. Administration of L-arginine into the cerebrospinal fluid of the spinal cord (80 mg/20 ml) was accompanied a long-term increase in tonic activity of efferent fibers of the abdominal aortic nerves (by 15-20%). These changes reflect a prolonged activating effect of L-arginine on sympathetic structures.

Activation of "silent" efferent fibers due to stimulation of the mesenteric nerve within a definite frequency range is described; the effect is supposed to result from sensitization in reflex circles related to visceral pain.

The possibility of using the thermal imaging method to assess the level of blood flow in the course of building thermograms of the surface of the hands of healthy volunteers before and after the load on the muscles was studied in this paper. The results obtained using the thermal imaging method provide objective information about the degree of blood supply to the tissues, which opens up new perspectives for evaluating skin blood flow in the dynamics. The technique is absolutely safe, non-invasive, versatile and easy to perform.