曰:经言五藏脉已绝于内,用针者,反实其外。五藏脉已绝于外,用针者,反实其内。内外之绝,何以别之?然。五藏脉已绝于内者,肾肝气已绝于内也,而医反补其心肺。五藏脉已绝于外者,其心肺脉已绝于外也,而医反...