Classification of Dementia and Delirium Using the Universal Density × MA Model Unified Understanding of BPSD Symptoms and Clinical Application of MA/D Supplementation for QOL Maintenance

This paper presents a unified theoretical framework for classifying dementia and delirium

into three types—D-low, MA-low, and mixed—using the Universal Density × MA Model (v21).

D (immediate input connection density) declines due to physical fatigue, evening exhaustion,

acute physical changes, or environmental shifts, while MA (historical assembly depth) reflects

long-term declines in memory and orientation. This enables theoretical prediction and

classification of BPSD symptoms such as evening delirium, checking behaviors, desire to return

home, diaper removal, irritability, and nocturnal delirium.

Future prospective clinical studies are warranted to quantitatively validate the correlation

between D/MA classifications and key patient-centered outcomes, including BPSD frequency,

delirium duration, length of hospital stay, and quality of life.

1MA/D supplementation interventions based on this classification can efficiently restore

Raw Qualia (Q = D_eff × MA) in older adults, contributing to maintenance and improvement of

quality of life (QOL). In v1, we newly added the positioning of pharmacotherapy, dementia

subtype-specific considerations, and safety assurance strategies for severe cases, expanding the

framework into one that bedside nurses can use seamlessly from theory to practice. This model

integrates conventional individual theories and provides a new framework enabling rapid and

accurate clinical decision-making.