9-Keel Unified Theory Series: Paper 43 D(t) Imbalance Model for Diabetic Ketoacidosis (DKA) — Metabolic Homeostasis Collapse

Diabetic ketoacidosis (DKA) is a life-threatening acute metabolic crisis characterized by insulin deficiency, elevated ketone bodies, severe acidosis, and systemic homeostasis collapse. This paper applies the 9-Keel unified theory and the four-dimensional D(t) dynamic imbalance index to establish a quantitative theoretical model for DKA progression. Using body temperature, blood pressure, heart rate, and arterial blood pH as core evaluation parameters, weight coefficients are adjusted to highlight the dominant role of acid-base disturbance in DKA. The 0.5℃ micro-temperature deviation is introduced as a universal early warning threshold. The D(t) model stratifies DKA into four progressive stages: steady state, mild imbalance, compensatory failure, and systemic collapse. This study is a pure theoretical analysis and does not involve clinical diagnosis, treatment, or medical guidance. It further verifies the universality of the D(t) model in acute metabolic critical diseases.