FIELD: medicine.SUBSTANCE: group of inventions relates to medical equipment. System for providing respiratory therapy during a therapy session comprises a pressure generator, which is configured to generate a pressurised flow of breathable gas for delivery to the airway and having an output, configured to expel the pressurised flow of breathable gas. Interface is configured to guide the pressurised flow of breathable gas from the output of the pressure generator to a point of delivery at or near the airway, wherein the interface causes a pressure drop between the output of the pressure generator and the point of delivery during delivery of the pressurised flow. Sensors are configured to generate output signals, conveying information related to one or more gas parameters of the flow, or pressure, or humidity, or velocity or acceleration of the pressurised flow of breathable gas at or near the point of delivery. Output signals are generated continuously during the therapy session. First sensor is located at or near the point of delivery. Processors are connected to the sensors and configured to implement processing modules. Estimation module is configured to estimate the pressure drop between the output of the pressure generator and the point of delivery during delivery of the pressurised flow of breathable gas, based on the generated output signals. Estimation by the estimation module is performed in an ongoing manner during the therapy session. Target module is configured to determine a target pressure for the pressurised flow of breathable gas that compensates for the dynamically estimated pressure drop. Target pressure is in accordance with a therapy regimen. Control module is connected to the pressure generator and is configured to adjust levels of gas parameters of the pressurised flow based on the determined target pressure. Method of estimating pressure drop during a respiratory therapy.EFFECT: technical result consists in ensuring the adjustment of the level
