Advanced Monitoring · available in beta
Teach the pressures behind the perfusion.
NAP brings the invasive arterial, central-venous and pulmonary-artery waveforms — and the numbers derived from them — into one coherent teaching view of a single shared patient.
Interactive example · driven by NAP's haemodynamics core
A coherent baseline
A coherent baseline. A textbook set: the arterial upstroke, the low CVP with its a/c/v waves and x/y descents, and a normal PA trace all agree with the derived numbers.
Every channel is sited and displayed on one shared patient. The arterial, central-venous and pulmonary-artery pressures are drawn from a single cardiac clock, and MAP, mPAP, CI, SV, SVR and PVR are derived from the primitives plus the patient — a coherent reference to read the pathological pictures against.
Silent · read-only · no session joined
What learners can see
These are related educational outputs of one shared patient — invasive pressures and the numbers derived from them, read together rather than in isolation.
- Arterial pressure
- The invasive arterial waveform and its systolic / diastolic / mean pressure, on an explicit mmHg scale.
- Central venous pressure
- The CVP mean with its a/c/v waves and x/y descents — the venous filling picture.
- Pulmonary-artery pressure
- The PA systolic / diastolic / mean trace, and the wedge (PAOP) when the balloon is inflated.
- Wedge / PAOP
- A press-and-hold pulmonary-artery occlusion measurement, with its own safety timing.
- Cardiac output & index
- CO and CI alongside the pressures — read as thermodilution with a PA catheter, or as an uncalibrated arterial pulse-contour estimate (PC) from the arterial line alone; method-labelled and kept distinct.
- Derived resistances
- MAP, mPAP, SV, SVR and PVR recomputed from the primitives and the shared patient — never typed in.
Four teaching moments
Each maps to a scene you can select in the interactive example above.
- 01
A coherent baseline
Establish how the arterial, venous and pulmonary traces and the derived numbers agree on a normal shared patient.
- 02
Cardiac tamponade
Read the blunted CVP y-descent and the exaggerated inspiratory arterial fall — pulsus paradoxus — with equalising filling pressures.
- 03
Pulmonary embolism (RV strain)
Watch a rising CVP and PA pressure sit above a still-low wedge — a wide gradient and a high pulmonary vascular resistance.
- 04
Cardiogenic (LV failure)
See a high wedge with a low output and index while the systemic resistance climbs to defend the pressure.
Built for teaching, not brand imitation.
The surface deliberately uses generic channel names and one coherent pressure model. Real invasive-monitoring platforms differ in their transducers, catheters, scales and layouts — so NAP presents no vendor logos, enclosure designs, branded layouts or trademarked product names as selectable skins. What you teach here is how to read and reason about invasive pressures, not how to operate one company's box.
Use it in a NAP session
- 1
Start a normal controller session.
- 2
Open the Advanced tab — opening it engages the module with a coherent default — and site the lines.
- 3
Apply a teaching preset, or set the primitive targets, respiratory coupling and any line faults.
- 4
On the monitor, learners enable channels, zero and level the transducers, fast-flush and wedge.
Full step-by-step operation — line placement, the transducer and wedge workflow, presets and the worked scenarios — is in the haemodynamics guide.
What NAP models—and what it does not.
What it models
- One shared patient: the arterial, CVP and PA waveforms come from a single cardiac clock, so the pressures never tell two different stories.
- A two-layer rule: enabling a channel display that the instructor has not sited shows "no transducer", never a fabricated trace.
- Device behaviour learners can operate — zero to atmosphere, level the transducer, fast-flush, and a press-and-hold wedge with its own over-wedge safety timing.
- Linked mode derives every number coherently; manual mode lets an instructor build a deliberate teaching contradiction, always behind a visible manual badge.
What it is not
- Not clinically validated and not equivalent to any real monitor — external clinical face validation is still in progress.
- Not a diagnostic or treatment device, and not a substitute for bedside measurement.
- Cardiac output is an instructor-set primitive, not a measured one — the arterial pulse-contour readout (PC) is a labelled trend of that authored value, not thermodilution or a calibrated continuous-cardiac-output computer.
- Not an invasive intracranial, ventilator or anaesthetic-machine model — those remain out of scope.
- In a paediatric room the numbers rescale — BSA from the selected band, class-scaled cardiac output, CI derived from CO ÷ BSA — as plausible teaching values, not a validated paediatric-haemodynamics claim; the pressure-waveform shapes stay adult-pattern at paediatric targets.
Bring the pressures into your next session.
Available free during beta. No account required.