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我国北方摄入普通饮食时(乳制品除外),24小时尿钙超过200mg称为高尿钙。随着饮食中钙含量的不同,正常尿钙范围也有变异。在欧美,每日饮食钙范围在700—1000mg,正常男性24小时尿钙不超过300mg,女性不超过250mg。在我国,印度和日本,每日入钙量平均300—400mg,正常人24小时尿钙一般不超过200mg。 病因和分类: 高尿钙的直接原因是肾小球钙的滤过与肾小管钙重吸收之差超过正常。肾小球钙滤过增加或肾小管钙重吸收减少均可导致尿钙增加。肾小球钙滤过增加主要是由于钙的滤
North China’s intake of ordinary diet (except dairy products), 24-hour urinary calcium over 200mg called high urinary calcium. With the different calcium content in the diet, the range of normal urine calcium also has variation. In Europe and the United States, daily dietary calcium range 700-1000mg, normal men 24 hours urinary calcium does not exceed 300mg, women not more than 250mg. In our country, India and Japan, the average daily calcium intake 300-400mg, normal 24 hours urinary calcium generally does not exceed 200mg. Etiology and classification: The direct cause of high urinary calcium is the difference between glomerular calcium filtration and renal tubular calcium reabsorption beyond normal. Increased glomerular calcification or decreased tubular reabsorption of calcium can lead to increased urinary calcium. Increased glomerular calcification was mainly due to calcium filtration