Application of Ultrasound in the Diagnosis of Hemodynamic Disturbances in the Postoperative Period in Severe Hand Injuries
The ultrasonic diagnosis of the affected segment in B-mode does not have significant diagnostic information due to a significant reduction in echogenicity, heterogeneous structure, shifting or complete lack of natural anatomical landmarks, but enables to reveal the structure, presumed to be blood vessels. Doppler mapping can reliably differentiate vessels with blood flow in them by the presence of color structure corresponding to the moving fluid (blood). Doppler flow imaging is compelling evidence of blood flow, which is especially important in clinical cases which are difficult to evaluate. Absence of color flow imaging indicates the absence of blood flow in the affected segment, and can serve as a basis for establishing indications for re-intervention. Most informative to determine blood flow in the vessels of the affected segment is energetic Doppler mapping, having advantages over color Doppler flow mapping at low speeds of blood flow. Studies of the blood vessels in the affected segment of the hand in a mode of pulsed Doppler flow spectrography are underrepresented due to technical difficulties in obtaining the correct spectral curve.