Maciocia Foundations: Stomach Patterns in Traditional Chinese Medicine

• Core Role of the Stomach: The Stomach is primarily responsible for the processes of "rotting and ripening" food, which are crucial in the initial stages of digestion. This involves mechanical breakdown via peristaltic movements and mixing with gastric juices to transform and digest the ingested material into a semi-liquid form known as chyme. The prepared chyme is then passed to the small intestine, where the Spleen may separate out the distilled essence of the food. It serves as a conceptual base for understanding the "origin of fluids," since all liquids consumed must be processed through this organ.

• Anatomical Position: Situated centrally in the abdominal cavity, the Stomach constitutes a vital part of the Middle Burner. It serves as the hub for the Qi pathways of various organs, ensuring the regulation of both ascending and descending movements vital for digestive functionality.

• Directionality of Qi: - Stomach-Qi must descend effectively to propel the processed food toward the lower organs, especially the intestines, where further absorption occurs.

  • Spleen-Qi must ascend to transport the essential Food-Qi derived from the digested material to vital organs, such as the Lungs and Heart, for nourishment and vitality.

• The Root of Post-Heaven Qi: Together with the Spleen, the Stomach is a source of all Qi produced by the body after birth, known as Post-Heaven Qi. These organs play such crucial roles that Stomach-Qi is symbolically equated with "life," while its total absence indicates "death" from a clinical perspective. The balance and strength of Stomach-Qi are critical for overall health and vitality.

Strategic Position and Qi Flow

• Middle Burner Crossing: The Stomach lies at an intersection of various Qi flows, making it critical for ensuring smooth circulation throughout the body. Pathological shifts can lead to a range of issues, including: - Stagnation of Qi, which can cause various digestive disturbances.

  • Rebellious Qi, where Qi moves upwards instead of descending, contributing to nausea and discomfort.

  • Retention of food items, which can lead to further complications in digestion and absorption.

• Clinical Significance of Strength: The relative strength of Stomach-Qi is a determinant factor in the prognosis of various diseases. Strong Stomach-Qi is often associated with a better chance of overcoming illness, while a weakened state complicates treatment options and may lead to chronic conditions.

Diagnostic Assessment of Stomach-Qi

• Tongue Monitoring: - Normal: A healthy tongue presents a balanced coating, which should have a "root" that appears to emerge distinctly from the surface of the tongue, indicating proper digestive function.

  • Stomach-Qi Deficiency: This is characterized by a "rootless" coating—patchy and easily scraped away, indicating the Stomach’s inability to expel its "dirty dampness," a by-product of digestion, upward to the tongue.

  • Stomach-Yin Deficiency: A total lack of tongue coating indicates severe depletion of fluids or Yin within the Stomach.

  • Stomach Crack: A noticeable wide crack located in the central section (Middle Burner) of the tongue indicates chronic deficiency affecting the Stomach, contrasting with a narrower Heart crack.

• Pulse Assessment: A pulse exhibiting Stomach-Qi is gentle and soft. Any deviation towards excessive hardness or softness reveals an imbalance, pointing to a deficiency in Stomach-Qi.

• Historical Context: The importance of the Stomach and Spleen was significantly emphasized by the "School of Stomach and Spleen," notably during the Yuan Dynasty, led by Li Dong Yuan (1180-1251) in his pivotal work Pi Wei Lun (1246). This historical framework laid essential foundations for understanding these organs' roles in pathology and treatment.

General Aetiological Factors

• Dietary Nature of Food: - The Stomach thrives on moist, easily digestible foods such as soups and porridge, aiding in effective digestion. If overexposed to excessive dry foods (e.g., baked goods and bread), it can lead to complications.

  • Overconsumption of hot foods (e.g., red meat, spices, and alcohol) can create Stomach-Heat, resulting in inflammation and discomfort.

  • Conversely, cold foods (including raw vegetables, fruit, and iced drinks) can induce Cold conditions within the Stomach, hampering digestive processes.

• Meal Regularity: Irregular eating patterns disrupt the natural rhythm of Stomach-Qi and should be avoided. Essential habits include: - Consuming meals at regular intervals, especially a proper breakfast to kickstart digestion.

  • Avoiding overeating, which leads to food stagnation, or under-eating, resulting in deficiency.

  • Refraining from late-night snacking, as nibbling depletes Stomach-Yin.

• Conditions of Eating: Negative emotional states while eating can cause significant dysfunction in the digestion process. - Engaging in worrying or reading during meals can lead to Stomach-Qi deficiency, negatively impacting digestion.

  • Experiencing anger or haste may cause Stomach-Qi stagnation or rebellion, affecting its normal function.

  • Eating while in an emotional state often leads to food retention, disrupting the digestive cycle.

• Emotional Strain: - Prolonged worry and pensiveness can directly weaken or stagnate Stomach-Qi, while anger influences it either directly or via invasion from Liver-Qi, both of which can lead to significant digestive issues.

• Exterior Factors: External cold can penetrate the body’s exterior layers and directly invade the Stomach, resulting in acute pain and potential vomiting.

Pattern Identification: Empty Conditions

Stomach-Qi Deficiency

• Manifestations: Key symptoms include uncomfortable epigastric sensations, lack of appetite, absence of taste, loose stools, and generalized weakness in the limbs.

• Tiredness: Patients often report exhaustion, especially noticeable in the morning between $7-9 \text{a.m.}$, which is the peak activity time for Stomach-Qi.

• Diagnosis: The tongue appears pale, while the pulse is identified as Empty, particularly in the Right-Middle position.

• Pathology: Given that it serves as the Root of Post-Heaven Qi, deficiency here leads to a general lack of Qi throughout the body, affecting all organ systems.

• Treatment: Tonification of Stomach-Qi involves the use of acupuncture points such as $\text{ST-}36$, $\text{Ren-}12$, $\text{BL-}21$, and $\text{Ren-}6$, accompanied by the herbal formula Si Jun Zi Tang.

Stomach Deficient and Cold

• Manifestations: Presenting with dull epigastric pain that improves with eating, pressure, or massage, patients often prefer warm food and drinks. They may experience vomiting of clear fluids alongside cold limbs and a pale complexion.

• Diagnosis: The tongue will appear pale and wet, paired with a Deep-Weak-Slow pulse.

• Aetiology: This condition is typically rooted in undereating or the excessive consumption of cold or raw foods.

• Treatment: The strategy is to tonify and warm Stomach/Spleen-Qi, using acupuncture points such as $\text{ST-}36$, $\text{Ren-}12$, $\text{BL-}20$, $\text{BL-}21$, and $\text{Ren-}6$ combined with moxibustion. The suitable herbal formula is Huang Qi Jian Zhong Tang.

Stomach-Yin Deficiency

• Manifestations: Characterized by lack of appetite or hunger without a desire to eat, presenting with dry stools, a dry mouth/throat, and dull or burning epigastric pain. Patients may also report feeling heat in the evening.

• Characteristic Thirst: The patient experiences a desire to drink in small sips due to dryness.

• Diagnosis: The tongue appears red with a lack of coating in the center, while the pulse is identified as Floating-Empty in the Right-Middle position.

• Precursor: This deficiency almost always stems from prolonged Stomach-Qi deficiency or misuse of antibiotics.

• Treatment: Nourishing Yin and replenishing fluids while utilizing acupuncture points $\text{Ren-}12$, $\text{ST-}36$, $\text{SP-}6$, and $\text{SP-}3$ alongside the herbal formula Sha Shen Mai Dong Tang.

Pattern Identification: Full Conditions

Stomach-Qi Stagnation

• Manifestations: Symptoms typically include epigastric distension and pain, belching, frequent nausea, and marked irritability.

• Diagnosis: The tongue may show redness on the sides in the central section, while the pulse presents as Wiry in the Right-Middle position.

• Pathology: This condition indicates a failure of the stomach's descending function, leading to upward pressure and discomfort.

• Treatment: Techniques include moving Qi and restoring the normal descending flow through acupuncture points such as $\text{ST-}34$, $\text{ST-}21$, $\text{ST-}19$, $\text{KI-}21$, $\text{T.B.-}6$, $\text{P-}6$, $\text{SP-}4$, and $\text{G.B.-}34$ with the use of Ban Xia Hou Po Tang formula.

Stomach-Heat (including Phlegm-Heat)

• Manifestations: Characterized by burning epigastric pain coupled with an intense thirst for cold drinks, foul breath, possible mouth ulcers, bleeding gums, and excessive hunger.

• Phlegm-Heat Variants: Symptoms may include chest oppression, mucus in stools, and potential mental disorientation.

• Diagnosis: A red tongue is typically observed with a dry, thick yellow or dark yellow coating, while the pulse presents as Rapid and slightly Overflowing.

• Treatment: The goal is to clear heat and stimulate the normal descending Qi using acupuncture points such as $\text{ST-}44$, $\text{ST-}34$, $\text{ST-}21$, $\text{Ren-}13$, $\text{L.I.-}11$, $\text{L.I.-}4$, $\text{Ren-}11$, and $\text{SP-}15$. Formulas that may be utilized include Tiao Wei Cheng Qi Tang or Qing Wei San.

Cold Invading the Stomach

• Manifestations: Patients often report sudden, acute epigastric pain accompanied by the vomiting of clear fluids and sensations of cold throughout the body.

• Diagnosis: A thick white coating is commonly observed on the tongue, and the pulse feels Deep-Tight-Slow.

• Treatment: Strategies focus on expelling cold and warming the Stomach with acupuncture points such as $\text{ST-}21$, $\text{SP-}4$, $\text{Ren-}13$, and $\text{ST-}34$ using moxibustion. The suggested formula is Liang Fu Wan.

Stomach-Qi Rebelling Upwards

• Manifestations: Nausea, hiccups, belching, and difficulty swallowing are commonly reported symptoms.

• Aetiology: This condition usually occurs alongside factors such as emotional strain or hurried eating patterns, exacerbating the symptoms

• Treatment: Interventions aimed at subduing rebellious Qi through acupuncture points like $\text{Ren-}13$, $\text{Ren-}10$, $\text{P-}6$, $\text{SP-}4$, $\text{ST-}21$, and $\text{ST-}19$, with the herbal formula Ding Xiang Shi Di Tang utilized for management.

Damp-Heat in the Stomach

• Manifestations: Symptoms include feelings of epigastric fullness or pain with heaviness, sticky taste, facial pain, or nasal congestion with yellow discharge (common in sinusitis).

• Diagnosis: A red tongue presents with a sticky yellow coating, while the pulse appears Slippery-Rapid.

• Treatment: Strategies revolve around resolving Damp and clearing Heat using points such as $\text{ST-}44$, $\text{ST-}21$, $\text{Ren-}12$, $\text{ST-}40$, and $\text{SP-}9$, with the herbal formula Lian Po Yin.

Retention of Food in the Stomach

• Manifestations: Symptoms include epigastric distension that is relieved through vomiting, foul breath, sour regurgitation, and possible insomnia due to obstruction in digestion.

• Diagnosis: Indicators include a thick tongue coating alongside a Full-Slippery pulse.

• Pathology: The premise of this condition is that food obstructs the Middle Burner, which prevents the Heart-Qi from descending properly, potentially resulting in poor sleep.

• Treatment: Strategies focus on resolving food retention using acupuncture points like $\text{ST-}21$, $\text{ST-}44$, $\text{ST-}45$, $\text{ST-}19$, and $\text{Ren-}12$, with the formula Bao He Wan employed.

Stasis of Blood in the Stomach

• Manifestations: This condition may be marked by severe, stabbing epigastric pain worsening at night, vomiting dark blood or "coffee ground" food, and dark blood in stools, indicating a serious issue.

• Diagnosis: Often observed with a purple tongue paired with a Wiry pulse indicates significant blood stasis.

• Note: Blood stasis in this context can serve as a precursor to serious conditions, such as carcinoma, necessitating careful management.

• Treatment: The approach typically involves invigorating Blood and eliminating stasis using acupuncture points such as $\text{ST-}34$, $\text{KI-}21$, $\text{BL-}17$, and $\text{SP-}10$ alongside the herbal formula Shi Xiao San.

Combined Organ Patterns

• Stomach- and Spleen-Qi Deficiency: This syndrome is characterized by poor appetite, uncomfortable sensations in the epigastrium, noticeable tiredness, and abdominal distension, commonly observed in clinical settings.

• Stomach- and Spleen-Yin Deficiency: Presents with signs of dryness, such as dry mouth and lips (specific to the Spleen), thirst for small sips, and dry stools.

Case Analysis (Example 38.1)

• Patient Profile: A 60-year-old woman.

• Symptoms: Reports of a loss of smell/taste for two years; experiencing epigastric pain and a "knot" sensation persisting for ten years, accompanied by nausea, intense thirst, and occasional bleeding gums.

• Physical Findings: A pulse assessment reveals a Full/Wiry quality in the Right-Middle position. The tongue appears red in the center with a dry yellow coating, indicative of internal heat and digestive dysfunction.

• Diagnosis: The working diagnosis is Stomach-Heat (symptoms of thirst and bleeding gums, with a center-red tongue) combined with Spleen-Qi deficiency (notable loose stools, poor appetite, and loss of taste/smell due to Heat burning upwards and Spleen failing to nourish sensory organs).