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GV-9 Extremity of Yáng
至阳 〔至陽〕zhì yáng
Alternate names: 肺底 fèi dǐ, Bottom of the Lung
Channel: GV, Governing (dū) Vessel
Modern location: An acupoint located on the upper back, inferior to the spinous process of the seventh thoracic vertebra.
Classic location: Below the seventh vertebra. (Yī Zōng Jīn Jiàn)
Local anatomy: The posterior branch of the seventh intercostal artery. The medial branch of the posterior ramus of the seventh thoracic nerve.
Action: Rectifies qì and loosens the chest; clears heat and disinhibits dampness; frees the channels and quickens the network vessels.
Modern indications: Jaundice;
Classic indications: Stomach cold; rumbling intestines; fatigued limbs; heat effusion with aversion to cold; aching in the lower legs; scantness of breath with difficulty in speaking; propping fullness in the chest and rib-side;
Needle stimulus: Needling: 0.5‒0.6 cùn sideways and upward oblique insertion. Moxa: 3‒5 cones; pole 10‒20 min.
Needle sensation: Twinge and distension extending laterally downward, or towards the front of the chest.
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