MENTAL MODEL · M2727

Fine Pulse / Xi Mai

TechnicalHigh supportTraditional Chinese Medicine

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Updated 2026-08-02

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INTRODUCTION

English translation pending.

CORE DEFINITION

The fine pulse is a classical pulse form in traditional Chinese medicine. It is described as thread-thin while still distinctly palpable under the fingers. It has two classical explanations: depletion of yin and blood, where reduced fluid narrows the channel, and compression by dampness, where an external obstruction squeezes the vessel. The key qualification is that a fine pulse alone does not indicate which cause is at work, so it must be interpreted alongside the rest of the presentation; treating the two causes as one is the standard error.

SCAFFOLDING EFFECT

psychology

Reduce cognitive load

- Narrowing channel: Read a thin but persistent output as reduced carrying capacity rather than as lost function. - Cause split: Ask whether the channel narrowed because the medium shrank or because something is pressing on it. - Capacity check: Before pushing for more output, check whether the underlying resource base can support it.

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Anchor fast decisions

Signal width in a channel tracks the amount of medium moving through it. When blood and yin are depleted the channel narrows and the pulse thins; when dampness compresses the vessel from outside it also narrows, but by a different mechanism with a different correction. Both produce the same surface reading, so the finding is only actionable once the direction of the cause is established. Reading thinness as a demand for more pressure ignores that one cause is a shortage and the other is a squeeze.

MINIMUM ACTION

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Practice this model in one real situation:

Note whether the pulse is thin but still clearly felt, distinguishing it from an absent signal. 2. Check for signs of blood or yin depletion such as dryness and pallor. 3. Check for signs of dampness such as heaviness and a greasy tongue coating. 4. Nourish when the cause is depletion and drain when the cause is compression. 5. Restore channel capacity before demanding a higher output from the system.

Check to track your progress (stored locally)

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Source support: Explicit

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baike.baidu.comhttps://baike.baidu.com/item/%E4%BA%8C%E5%8D%81%E5%85%AB%E8%84%89/4855781ZH · Explicit
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