A randomized 12-month trial will include two groups of 100 individuals aged over 50 years, with asymptomatic mild to moderate Aortic valve stenosis (AVA \> 1 cm2, Vmax \< 4 m/s). The first group of 100 individuals will serve as the intervention group that will receive 300 mcg of K2 vitamin on a daily basis, while the second group of 100 individuals will be the control group that will receive placebo on a daily basis as well. Both groups will be monitored identically in order to investigate therapeutic effects on calcification and valve stenosis progression. Correlation with Mitral annulus and ascending Aorta.Exclusion criteria: Chronic Kidney disease, Vitamin K antagonists, statins, age \< 50 y.o,prosthetic valves,Aortic Valve area (AVA) \< 1cm2 ,Vmax \> 4 m/s
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Evaluation of calcification change of Aortic valve.Correlation With Mitral annulus and ascending Aorta calcification.A randomized 12-month trial.
Timeframe: Each patient will be evaluated twice a year.Once before the administartion of VK2/Placebo and after a period of a 12 month administration of VK2/PLACEBO