Effect of APRV vs. LTV on Right Heart Function in ARDS Patients: a Single-center Randomized Controlled Study

ventilator parameters were set according to the study protocol, P high: Tidal volume (VT) was set at 6ml/kg of ideal body weight, and plateau pressure (Pplat) was measured. Initial Phigh was set at Pplat, usually 20-32 cmH2O. The APRV end-expiratory flow rate was set at 75% of the peak expiratory flow rate.

The ARDSnet method was used for LTV mechanical ventilation, and the tidal volume was set according to 4-8ml/kg, so that the Pplat was \<30cmH2O