Pericardium (PC)

Overview

The Pericardium meridian is sometimes called the 'Heart Protector' or 'Heart Governor,' and its peak time of 7-9 PM reflects its role in the evening transition from external activity to internal restoration. This is traditionally the time for relaxation, intimate connection, and emotional warmth -- activities that nourish the Heart through the Pericardium's mediation.

PC-6 (Nei Guan, Inner Pass) is one of the most researched acupuncture points in modern clinical studies, particularly for its anti-nausea effect. Its efficacy for post-operative nausea, chemotherapy-induced nausea, morning sickness, and motion sickness has been demonstrated in numerous randomized controlled trials, making it one of the few acupuncture points with substantial Western scientific validation. The acupressure wristbands sold in pharmacies for sea sickness work by stimulating this point.

The Pericardium's relationship to emotional boundaries is particularly relevant in modern clinical practice. Many patients present with either excessive guardedness (the person who cannot open their heart to anyone, who maintains emotional distance even in intimate relationships) or excessive permeability (the person who absorbs everyone else's emotions, who cannot distinguish their own feelings from those of others). Both patterns reflect Pericardium disharmony -- the protective gate is either locked shut or thrown wide open.

Pathway

The Pericardium meridian originates within the chest at the pericardium, descends through the diaphragm to connect sequentially with the upper, middle, and lower burners (San Jiao). A branch crosses the chest to emerge lateral to the nipple at PC-1 (Tian Chi, Celestial Pool), ascends to the axilla, then descends along the medial arm between the Lung and Heart meridians, through the center of the biceps, crosses the elbow at PC-3 (Qu Ze), continues down the center of the forearm between the two tendons (palmaris longus and flexor carpi radialis), crosses the wrist at PC-7 (Da Ling), enters the palm at PC-8 (Lao Gong, Palace of Toil), and terminates at the tip of the middle finger (PC-9, Zhong Chong).

Functions

The Pericardium meridian serves as the Heart's protective shield, absorbing pathogenic influences that would otherwise assault the Emperor directly. It governs the physical pericardium and its role in protecting the heart organ, but more importantly it shields the Shen (spirit) from emotional shock and trauma. The Pericardium also regulates circulation in the chest and governs the capacity for emotional openness and vulnerability -- it controls how much the 'gates of the heart' open or close in response to relationships and experience.

Common Symptoms of Imbalance

Palpitations, chest tightness or oppression, anxiety, emotional vulnerability or over-guardedness, difficulty with intimacy, nausea, vomiting, insomnia, hot palms, elbow pain at the medial aspect, wrist pain centrally, middle finger numbness, a feeling of emotional overload or being overwhelmed, fainting from emotional shock, laughter at inappropriate times

Balancing Practices

Qigong practices that cultivate awareness in the palms, particularly the Laogong point (PC-8). Rubbing the palms together to generate warmth, then placing them over the eyes or heart. The evening hours (7-9 PM, Pericardium time) are ideal for intimate connection, relaxation, and emotional processing. Gentle stretching of the inner arm. Journaling about relationships and emotional boundaries. PC-6 acupressure for nausea (the basis of acupressure wristbands for sea sickness). Creating a calm, nurturing evening environment to support the Pericardium's protective function.