Increasing the auto-peep effect without compromising pulmonary blood flow is the goal of high frequency pressure control ventilation. Capnography is a tool that can be used to assess ventilation along with determinations of dead space ventilation and pulmonary perfusion. The ratio of ineffective to effective tidal volume is helpful to assess ventilator rates to prevent 'dead space only' ventilation. This is where high frequency ventilation is most helpful, i.e., to increase auto-peep to open the lung. Effective to ineffective tidal volume can be used to find the optimal rate to gently open the lung.
Hemodynamic monitoring is a very important aspect of high frequency concept ventilation.
The momentary effects of positive pressure can be minimized by optimizing right heart filling pressures. Mean central venous pressure and mean pulmonary artery pressure should always slightly exceed the mean airway pressure to ensure adequate pulmonary blood flow. Appropriate urine output is essential to minimize lung water and optimize static lung compliance. Initial ventilator settings. Selecting initial ventilator settings can be chosen using the ventilator monitors to assess patient feedback to optimize ventilation.