CIRCULATION STUDIO FIELD GUIDE
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How the model works
Calculation order, equations, interactions, waveform generation and explicit assumptions.
LV and RV pressure–volume construction
Pressure comes from the trace; volume is an idealized, flow-conserving chamber model.
Measured summaries, units & rounding
Why a sampled mean, a baseline target and an end-diastolic point differ.
Mechanical support: flow paths, pressure & pulsatility
ECMO, Impella and IABP have different circulatory actions.
Multiple diseases: dominance, addition & constraints
How selected pathologies interact instead of simply adding their pressures.
Oxygenation, CO₂, perfusion & pleth
Synthetic gas exchange and pulse reliability are related but different.
PEEP, transmural pressure & cardiopulmonary loading
Why measured filling pressure can rise while useful preload and output fall.
Postural maneuvers & Valsalva phases
Short-lived loading experiments use shared pressure, flow and reflex rules.
Pressure waveforms: atria, ventricles & arteries
Synthetic contours are anchored to the solved circulation and shared beat timing.
Reference phenotypes & baseline numbers
The starting catalogue is a set of teaching examples, not diagnostic criteria.
Reference ranges, color emphasis & intervention warnings
Normal ranges and illustrative alerts are separate from clinical diagnosis.
Rendering, clocks, scales & inspection
How smooth drawing stays separate from the physiological calculation.
Respiration & ventricular interdependence
One respiratory description coordinates timing, pressure shifts and pulse variation.
Rhythm schedules, atrial timing & mechanical output
Electrical events and pulse strength share a reproducible beat schedule.
Sedation, sympathetic reserve & respiratory depression
Five infusion snapshots affect circulation and spontaneous ventilation.
Shunt network, Qp/Qs & oxygen mixing
ASD, PAPVR, VSD and PDA use distinct anatomic flow paths.