Overview
Click PLETH for the compact ventilator and pressure/flow/volume waveforms. Both the pleth panel and Ventilator Support selector offer room air, nasal oxygen, Venturi mask (Venti-mask), NIPPV and intubation. Venturi uses nominal FiO₂ presets of 24, 28, 31, 35, 40, 50 or 60%, starting at 28%. Adequate device flow is assumed; actual inspired oxygen is not patient-calibrated. Venturi preserves spontaneous breathing and applies no positive pressure, PEEP or intrinsic PEEP. Stored ventilator settings become active only with NIPPV or intubation. Supplemental amount changes the modeled oxygenation response. NIPPV and intubation also show a PEEP slider (0–24 cmH₂O); it changes pressure transmission, filling, forward flow, oxygenation and lung opacity. Its tooltip and the summary table distinguish measured pressure from estimated transmural filling. The same disease/loading state continues to determine how much impairment remains.
Pulmonary congestion follows mean wedge after excluding modeled chest-pressure transmission. A higher LVEDP alone does not create pulmonary edema when mean LA/wedge stays low. Treatments that lower wedge can improve modeled oxygenation; oxygen support does not resolve the underlying hemodynamic problem.
This is not a complete ventilator simulator. It does not model all blood-gas, lung-recruitment, airway or regional oxygen-delivery behavior, and V-A ECMO differential hypoxemia is not predicted in detail.