动态监测不同钙浓度腹膜透析液对尿毒症患者钙磷代谢的影响

目的 动态监测使用不同钙浓度腹膜透析液行持续性不卧床腹膜透析（CAPD）对尿毒症患者钙磷代谢的影响。方法将加例初行CAPD的尿毒症患者随机分为标准钙组和低钙组，每组各20例，行正规CAPD治疗并配合碳酸钙口服，观察12个月。结果两组患者初行CAPD时，血清钙、磷、钙磷乘积及免疫反应性甲状旁腺素（iPTH）浓度比较差异均无统计学意义，普遍存在高磷血症及低iPTH血症。经过6个月的治疗，标准钙组患者的高钙、高磷血症进一步加重，而低钙组患者的血清钙[（2．29±0．27）mmol／L]、血清磷[（1．50±0．25）mmol／L]及钙磷乘积[（41．62±19．55）mg^2/dl^2]较治疗前显著降低，且均低于治疗后的同期标准钙组患者（P〈0．01），iPTH则显著上升（P〈0．01）。在随后的6个月中，低钙组患者血清钙、钙磷乘积保持稳定并维持在正常范围，血清磷进一步降至正常范围（0．8～1．5mmol／L），iPTH则维持在150ng/L左右，与标准钙组比较有显著改善（P〈0．01）。结论低钙浓度腹膜透析液有助于减轻尿毒症CAPD患者的钙磷代谢紊乱，延缓并发症的发生。

Dynamic observing the effect of different calcium concentration peritoneal dialysate on calciumphosphorus metabolism in uremia patients under peritoneal dialysis

Objective To observe the effect of different calcium concentration peritoneal dialysate on calcium-phosphorus metabolism in uremia patients under peritoneal dialysis. Methods FonT uremia patients who the first entered peritoneal dialysis were divided into two groups： standard calcium concentration group （20 cases）, low calcium concentration group （20 cases）. Treated with continuous ambulatory peritoneal dialysis （CAPD）, combiningwith oral calcium carbonate, observing 12 months. Results When the first entering CAPD, serum calcium, phosphorus, calcium-phosphorus preduct immunoreactive parathyroid hormone （iPTH） of the two groups had no differences. Hyperphosphatemia, lower iPTH were universal. After 6 months＇ treatment, hypercalcemia and hyperphosphatemia in standard calcium concentration group got increasingly serious.While in low calcium concentration group, serum calcium, phosphorus, calcium-phosphorus product all decreased significantly, moreover, they were also lower than post-treatment standard calcium concentration group（P 〈 0.01 ）. In the following 6 months, in low calcium concentration group,serum calcium, calcium-phosphorus product maintained at the normal level, serum phosphorus also decreased to the normal level, iPTH maintained about 150 ng/L. During the treatment, all patients had no hypotension and hyperspasmia. Conclusion Low calcium concentration peritoneal dialysate can ameliorate disorder of calcium-phosphorus metabolism, delay the appearance of its complications.