METHOD FOR PREDICTING PREMATURE BIRTH WITH INTRAUTERINE INFECTION OF FETUS AND ABSENCE OF CONOTRUNCUS DEFECTS Russian patent published in 2018 - IPC A61B8/00 A61B5/107 

FIELD: medicine.

SUBSTANCE: invention relates to the field of medicine, namely to radiology diagnosis in obstetrics and gynecology, and can be used to predict premature births in the case of intrauterine infection of the fetus and the absence of conotruncus defects. Perform an ultrasound examination of the pregnant uterus and fetus. Determine the ratio of the distance from the posterior surface of the sternum to the anterior wall of the aortic cross section (T₁) to the distance from the posterior surface of the sternum to the anterior surface of the body of the thoracic vertebra (T₂) in a standard “cut through three vessels” transabdominal ultrasound section. In a standard transvaginal ultrasound sagittal section of the cervix, the length of the cervix from the inner to the outer pharynx is determined in millimeters (L) and the presence of congestion of echo-positive suspension over the internal os (S). When the value of the relation T₁/T₂ is not less than 0.40, the ratio of 0 points is assigned to the relation. With a value of relation T₁/T₂, equal to 0.35–0.39, the ratio of 0.5 points is assigned to the relation. With a value of relation T₁/T₂ is less than 0.35, the ratio of 1.5 points is assigned to the relation. When the value of L is not less than 20 mm, the ratio of 0 points is assigned to the relation. When the value of L is less than 20 mm, the ratio of 0.5 points is assigned to the relation. In the absence of an echopositive suspension over the internal os (S), 0 points are assigned, and in the presence of an echopositive suspension, 1 point is assigned. Determine the risk of preterm birth by the formula P=T₁/T₂+L+S. For P≥2 determine the risk of developing preterm birth within the next 14 days.

EFFECT: method provides non-invasive prediction of preterm labor, timely adjustment of treatment tactics, reduction of neonatal mortality, improvement of the prognosis for the newborn by taking into account the individual anatomical and physiological data of the fetus, amniotic fluid and the pregnant uterus in the absence of anomalies of the conotruncus in the fetus.

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