Hemodynamic Homeostasis · §19 · HP_i refuted ⇔ its stated structural prediction fails on the proven loop
Comfort falsification: every hypothesis is refutable, including the framework
Every hypothesis is refutable. HP1 fails if lowering the reference does not durably lower the defended pressure; HP6 fails if flogging the effector grows the heart-failure margin as much as load reduction; the framework fails if the loop’s counter-regulation direction (RP4 reject / T1 durable) is itself irreproducible [V].
Falsification ports the analgesic register: each hypothesis is paired with a concrete condition that would refute it, and a framework-level falsifier targets the load-bearing loop result itself. Refutability is what separates a structural prediction from an unfalsifiable assertion; the register is graded [V] because each refutation condition is stated against a reproduced loop quantity, not against an opinion.
Each hypothesis is paired with a refutation condition
A structural prediction earns its grade only if it can be wrong. This register pairs every comfort hypothesis with a concrete condition that would refute it, and adds a framework-level falsifier aimed at the load-bearing loop result. Each condition is stated against a reproduced loop quantity (RP4 rejection, T1 durability, T2 margin, the RP6–RP9 perfusion floor), so refutation is a matter of the model’s own verifiable behaviour, not of interpretation.
| Target | Refuted if… |
|---|---|
| HP1 | If lowering the renal pressure-natriuresis / RAAS reference does NOT durably lower the defended pressure while an operating-point push does, the 'intervene at the setpoint, not the operating point' premise is wrong. |
| HP2 | If every setting that lowers the reference also drives MAP below the perfusion floor (no window between normotension and hypotension), the 'controlled return toward normotension, not through the floor' premise fails. |
| HP3 | If a counter-regulation-PRONE axis (e.g. an effector-only push) yields more durable, lower-counter-regulation control than a reference-reset axis, the counter-regulation-freedom ranking is falsified. |
| HP4 | If a reference-lowering mechanism that IS sensed as an acute disturbance is opposed no more than one that is not (the integral controller does not distinguish them), the 'avoid being sensed as a disturbance' shape is unnecessary. |
| HP5 | If a setpoint-targeting (reference-reset) direction nonetheless reproduces the same reflex counter-regulation as an operating-point push (matched tachycardia/fluid-retention attributable to the target), the 'structurally does not provoke the reflex push-back' rationale is falsified. |
| HP6 | If flogging the effector (raising inotropy) GROWS the heart-failure basin margin as much as load-reduction + cycle-break, the 'grow the margin, do not flog the effector' premise is wrong for that regime. |
| HP7 | If an effector unload used as operating-point MONOTHERAPY is NOT opposed back (durable without a reference/volume arm), the 'pair-only with H1' rule is unnecessary -- the integrator caveat would not hold. |
| FRAMEWORK | If the loop's counter-regulation direction (RP4 reject / T1 durable) is itself irreproducible -- an operating-point push is NOT opposed back, or a reference reset is NOT durable -- the entire comfort-lever placement loses its [V] structural basis (the lever frame would not order the axes). |
The framework itself is on the line
The final row is the framework-level falsifier: if the loop’s counter-regulation direction — the RP4 rejection of an operating-point push and the T1 durability of a reference reset — were itself irreproducible, the entire comfort reading would fall, because every lever and every hypothesis is read off that one asymmetry. Staking the framework on a single reproducible result is the point: the register is graded [V] because each falsifier is concrete and loop-anchored.