INFRARED DIAGNOSTIC TECHNIQUE FOR NEONATAL FETAL HYPOXIA Russian patent published in 2017 - IPC A61B5/01 

FIELD: medicine.

SUBSTANCE: at first, mother's body temperature is determined. At body temperature above 37.2°C an increased fetal need for oxygen is predicted. Further, continuous dynamic thermal imaging video recording of the fetal head surface temperature during the act of delivery in the temperature range from 32 to 42°C using a thermal imager with the function of imaging of its visible on the screen in colors varying from red to purple. When the fetal head surface leaves the birth canal, it is immediately blown with a stream of dry air at a temperature of 25°C. A household hair dryer with the function of creating a uniform flow of cold air is used as a blowing device. The hair dryer is placed above or below the fetal head without shielding the infrared image of the head on the thermal imager screen. The head is blown from a distance of 10-15 centimeters with air flow intensity ensuring a decrease in the head surface temperature by several degrees in 3 to 5 seconds. With a uniform temperature, or with local hyperthermia above the arrow-shaped suture or fontanel, no hypoxia is concluded. If the temperature in one of these areas decreases by 0.1°C compared to the surface temperature over adjacent areas of the head, a conclusion is made on fetal hypoxia. Fetal head blowing by air and thermal video recording of temperature dynamics is continued until the birth. The video is archived in the digital form on an individual USB flash drive.

EFFECT: emergency detection of fetal hypoxia signs with increased speed, accuracy, safety and effectiveness of diagnosis.

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