维生素Ｋ的发现者Ｄａｍ最初认为维生素Ｋ只参与凝血 ,于是称之为凝血性维生素。几十年来维生素Ｋ也一直被作为促凝剂使用。维生素Ｋ缺乏可导致出血 ,而维生素Ｋ能有效改善这种出血。人们似乎不再把维生素Ｋ视为营养素。在传统临床医学实践中 ,通过测定依赖维生素Ｋ的凝血因子 Dam, the discoverer of vitamin K, initially thought that vitamin K was involved only in clotting and was called a thrombogenic vitamin. Vitamin K has also been used as a coagulant for decades. Lack of vitamin K can lead to bleeding, and vitamin K can effectively improve this bleeding. It seems that people no longer regard vitamin K as a nutrient. In traditional clinical practice, clotting factors that rely on vitamin K are measured