P4 Ximen ( XiCleft Point , MC4 )

Location 5 cun above the transverse crease of the wrist , on the line connecting P3 and P7 , between the tendons m . palmaris longus and m . flexor carpi radialis

Indications Cardiac pain , palpitation , epistaxis . hematemesis , haemoptysis chest pain , furuncle , epilepsy .

Method Puncture perpendicularly - 0 . 5 - - 1 . 0 inch . Moxibustion is applicable .

Vasculature The median artery and vein deeper , the anterior interosseous artery and vein .

Innervation The medial antebrachial cutaneous nerve deeper , the median nerve ; deepest , the anterior interosseous nerve .