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Capítulo 5 de 28
濒湖脉学
Overall Paraphrase
The rapid pulse (shù mài) belongs to the category of yang pulses (yang pulses: a pulse category reflecting hyperfunctional and heat-type states of the human body).
The diagnostic criterion for the rapid pulse is: six beats per breath — between one inhalation and exhalation of the physician, the patient's pulse beats six times. This standard first appears in the Mài Jīng (Pulse Classic). The Huángdì Nèijīng·Sùwèn (Yellow Emperor's Inner Classic: Plain Questions) describes it as "mài liú báo jí" (pulse flow rapid and urgent), meaning the movement of qi and blood within the vessels is hurried and swift.
The formation mechanism of the rapid pulse lies in yīn not overcoming yáng — yīn qi is insufficient to restrain yáng qi, causing yáng qi to become hyperactive, resulting in an excessive pulse rate.
Within the pulse diagnosis system, floating, deep, slow, and rapid are the four cardinal guiding pulses. Both the Sùwèn and the Mài Jīng list the rapid pulse as one of the regular pulses in their discussions. Only the Mài Jué (Pulse Rhymes) established a classification framework of "seven superficies and eight interiors," which actually omitted the rapid pulse, mentioning it only incidentally when discussing the heart. This error is extremely serious.
The Form Poem states: the rapid pulse beats a fixed six times per breath. Yīn qi is weak while yáng qi is exuberant, and the patient often presents with irritability and restlessness. By observing whether the rapid pulse is accompanied by floating or sinking, one can distinguish whether the disease is in the exterior or interior, and whether it is deficiency or excess. Only in children is a naturally rapid pulse rate considered a normal physiological phenomenon.
The Comparison Poem states: the rapid pulse beats one extra beat per breath compared to the normal pulse rate. The tight pulse (jǐn mài) also arrives quickly, but the vessel feels taut and strained, like plucking a rope. A rapid pulse with occasional pauses is called a hurried pulse (cù mài). A rapid pulse appearing at the guan position, beating like a bean, is called a moving pulse (dòng mài). Specific differentiation: rapid and wiry/tight is the tight pulse, rapid and slippery is the slippery pulse (huá mài), rapid with pauses is the hurried pulse, extremely fast is the racing pulse (jí mài), and rapid with solitary movement at the guan position is the moving pulse.
The Indications Poem states: the rapid pulse indicates yang-heat syndromes, of this there is no doubt. The treatment approach should focus on regulating the monarch fire (jūn huǒ) (heart fire) and minister fire (xiàng huǒ) (liver and kidney fire). Excess-heat patterns are suitable for cold and cool methods to purge fire, while deficiency-heat patterns are suitable for warming and tonifying methods. In people with lung disease, seeing a rapid pulse in late autumn is particularly a cause for vigilance. At the cun position, a rapid pulse indicates sore throat, mouth and tongue ulcers, hemoptysis, cough, and lung abscesses. At the guan position, a rapid pulse indicates intense stomach fire and hyperactive liver fire. At the chi position, a rapid pulse corresponds to the treatment principle of nourishing yīn and descending fire — the academic approach of nourishing yin fluids and clearing deficient fire. In summary: the rapid pulse mainly corresponds to disorders of the six fu organs (gallbladder, stomach, large intestine, small intestine, bladder, and triple burner). Rapid and forceful indicates excess fire; rapid and foreeless indicates deficiency fire; floating and rapid indicates exterior heat; deep and rapid indicates interior heat; at the qìkǒu (right cun position), rapid and forceful indicates lung heat congestion, while rapid and foreeless indicates lung wilting (fèi wěi).
The core academic thought of the rapid pulse can be summarized as "determining the count by breathing, measuring heat by the count." The ancients used the physician's own breathing rhythm as a timing tool, defining a pulse rate exceeding the normal standard (four beats per breath) as "rapid." This is a highly practical and wisdom-filled attempt at standardization.
Its deeper medical principle lies in the imbalance of the yin-yang constraining relationship. Under normal physiological conditions, yin qi and yang qi mutually restrain and balance each other. When yin fails to control yang, yang qi becomes excited and agitated, accelerating the movement of qi and blood within the vessels, resulting in a rapid pulse. The "yang" here is not an abstract philosophical concept, but is directly related to fire-heat pathogens or deficient fire stirring internally — whether excess heat or deficiency heat, both can manifest as an accelerated pulse rate.
It is worth noting that Lǐ Shízhēn specifically emphasized the status of the rapid pulse as a cardinal pulse. Floating and sinking determine the location (exterior/interior); slow and rapid determine the speed (cold/heat). The four cardinal pulses of "floating, sinking, slow, and rapid" constitute the most fundamental and practical framework for pulse diagnosis. Any complex pulse analysis must first address these four questions. His criticism of the Mài Jué for omitting the rapid pulse reflects a rigorous scholar's defense of the completeness of the pulse diagnosis system.
Furthermore, the perspective of "rapid pulse indicates fu organ disorders" is highly illuminating: although the rapid pulse indicates heat, heat can be in the zang organs, fu organs, channels, or collaterals. A rapid and forceful pulse mostly corresponds to excess heat in the six fu organs, echoing the zang-fu differentiation system.
From a modern physiological standpoint, the rapid pulse at "six beats per breath" roughly corresponds to a resting heart rate above 90 beats per minute (estimated at a respiratory rate of 15 breaths per minute). The common causes of tachycardia in modern medicine show verifiable correlations with the TCM concept of "heat syndromes": for every 1°C rise in body temperature during fever, the heart rate increases by approximately 10 beats per minute; under conditions of infection, inflammation, hyperthyroidism, anemia, and dehydration, the heart rate increases compensatorily. This aligns remarkably well at the phenomenal level with the ancients' empirical judgment that "the rapid pulse indicates heat."
The classification of "floating and rapid indicates exterior heat, deep and rapid indicates interior heat" has a crude analogical value to the modern medical distinction between "superficial infections (such as early-stage colds) and deep infections (such as pneumonia and visceral inflammation)." "Rapid and foreeless indicates deficiency fire" may correspond to tachycardia under chronic consumptive conditions, such as long-term malnutrition, recovery from chronic illness, and autonomic nervous system dysfunction.
However, one must honestly acknowledge its historical limitations: the ancients only used the pulse rate to infer the presence of "heat," lacking precise knowledge of specific etiologies. Arrhythmias (such as premature beats), paroxysmal tachycardia, medication effects, and emotional fluctuations can all cause an accelerated pulse rate without involving heat. Relying solely on a rapid pulse to conclude "heat" or "fire" is insufficiently rigorous and requires comprehensive judgment integrating other diagnostic information.
The core message of the rapid pulse is "yang is relatively hyperactive, yin is relatively weak, and the rhythm is on the fast side." From a non-therapeutic lifestyle perspective, the following points deserve attention:
The above are general health preservation insights only, not directed at any specific disease, and do not replace medical diagnosis and treatment.
Related Concepts
Further Reading
This content is based on classical Chinese medical texts and is provided solely for the study of traditional culture. It does not constitute any medical diagnosis, medication, or treatment advice; if you feel unwell, please seek medical attention promptly.