Execution State Divergence in Bile Acid–RAAS–Electrolyte Regulation, V 1.4, February 2026

Version 1.3 established an axis-based orientation model linking bile acid receptor signaling to downstream electrolyte regulation through renal nitric oxide production and RAAS modulation. The present note introduces the concept of execution state divergence within this regulatory axis. This framework proposes that electrolyte outcomes are determined not solely by upstream signaling but by the functional state of renal integration mechanisms. Under stable execution conditions, renal nitric oxide availability and balanced RAAS tone support appropriate chloride and bicarbonate transport. Under unstable execution conditions, altered nitric oxide signaling and RAAS bias may produce chloride retention and hyperchloremic acid–base phenotypes despite similar upstream signaling conditions. This interpretation does not introduce new biological mechanisms but clarifies how variation in execution state within established renal regulatory pathways may produce divergent electrolyte outcomes. The model is intended to support future investigation of state-dependent electrolyte instability in clinical physiology.