METHOD FOR WEANING FROM ARTIFICIAL VENTILATION OF PATIENTS WITH SPINAL CORD INJURY AT THE LEVEL OF THE CERVICAL SPINE Russian patent published in 2022 - IPC A61B5/08 A61M16/00 

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to anesthesiology and resuscitation, and can be used to wean patients with spinal cord injury at the level of the cervical spine from artificial lung ventilation. When the auxiliary ventilation mode is reached at the level of respiratory support (Psupport) no more than 8-10 cm water column and a constant end-of-exhalation pressure (PEEP) of 7 cm water column, compensated indicators of the patient’s condition: indicators of acid-base state (ABS) - pO₂>120 mmHg, pCO₂ 35-45 mmHg, pH 7.35-7.45, stable hemodynamics, clear consciousness of the patient:

- the inhaled volume of air (VTinsp) and exhaled volume of air (VTexp) of air, the time spent on one act of forced breathing are recorded,

- the air density is determined by the formula ρ=P/ (R* T), where P-PEEP is cm water column, R is the universal gas constant = 8,314, Τ is the air temperature in the circuit of the ventilator (°C),

- the diameter of the intubation/tracheostomy tube is determined; then the patient’s energy consumption for overcoming the resistance of the respiratory tract, intubation/tracheostomy tube during the act of forced breathing is calculated according to the formula: , where Ε is the patient’s energy consumption for overcoming the resistance of the respiratory tract, intubation/tracheostomy tube during the forced act (J); ρ is the air density in the circuit of the ventilator (kg/m³); V is the air volume (VTinsp, inhaled volume+VTexp, exhaled) (m³); t is the air flow time (sec); d is the inner diameter of intubation/tracheostomy tube (m); if the value of Ε has not reached the value of 1.08^-5J, ventilation is continued in auxiliary mode, all indicators are monitored and Ε is calculated once a day, and when the value of Ε is reached 1.08^-5-3.,04^{- 5}J and compensated indicators of the patient’s condition on an auxiliary ventilator mode, with a Psupport level of no more than 8-10 cm water column and at a constant pressure of the end of exhalation 7 cm water column, ventilating is stopped.

EFFECT: method provides determination of the patient’s readiness to transfer to independent breathing by assessing the patient’s energy consumption and overcoming the resistance of the respiratory tracts, endotracheal/tracheostomy tube during the forced act of breathing.

1 cl, 4 ex