Overview
Open Interventions → Maneuvers. Choose Off, I · Onset, II · Strain, III · Release, IV · Recovery. Effect levels and flow targets represent illustrative modeled responses; they are not clinical dose instructions.
Forced expiration against resistance raises intrathoracic pressure. I: transient BP rise. II: reduced venous return with reflex responses. III: release-related BP dip. IV: recovery/overshoot; severe HF may blunt the usual pattern.
The paused reference covers the route (Cooperative expiratory strain; the simulator selects phases manually rather than timing a patient maneuver.), example doses/settings, indications, adverse effects, contraindications/precautions and monitoring. These details are available after the intervention is selected.
What to monitor in the reference: Continuous ECG/BP and symptoms. The paused graph illustrates phase timing and reflex responses; it does not provide a diagnostic Valsalva ratio. SVT conversion and fatigue are not simulated.