Correlates of low hemoglobin A1c in maintenance hemodialysis patients.

Correlates of low hemoglobin A1c in maintenance hemodialysis patients.
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DOI:
10.1007/s11255-012-0208-y
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发表时间:
2013-08
影响因子:
2
通讯作者:
Kalantar-Zadeh, Kamyar
Kalantar-Zadeh, Kamyar
中科院分区:
医学4区
文献类型:
--
作者:
Kim, Youngmee;Park, Jong Chan;Molnar, Miklos Z.;Shah, Anuja;Benner, Debbie;Kovesdy, Csaba P.;Kopple, Joel D.;Kalantar-Zadeh, Kamyar

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糖尿病维持性血液透析(MHD)患者血糖控制的最佳目标尚未确定。对347名有HbA1c数据的糖尿病MHD患者进行了为期6年(2001年10月至2006年12月)的队列研究,以了解HbA1c与死亡率之间的关系。死亡风险比(HR)用COX回归和三次样条法估计。在这347名患者(年龄59±11岁;女性49%;非裔美国人28%;西班牙裔55%)中,在完全调整的模型中,HbA1c每下降0.5%,死亡风险就增加4.7倍(HR=4.7;95%CI 1.7-12.7)。与HbA1c水平降低相关的因素有:西班牙裔(OR=2.9;95%CI 1.1~7.9)、较高的上臂中段肌肉环境(OR=1.1;95%CI 1.0~1.3)、较高的总铁结合力(OR=1.03;95%CI 1.01~1.05)和较高的铁饱和度(OR=1.14;95%CI 1.03~1.26)。经多因素调整后,HbA1c水平和GT;7%显示出死亡风险增加的一致趋势(HR=1.18;95%CI 0.99-1.41)。在以HbA1c和HbA1c;6%为特征的精疲力竭糖尿病的糖尿病MHD患者中,即使HbA1c水平较低也与显著更高的死亡风险相关。需要进一步的研究来确定糖尿病MHD患者不同亚组的HbA1c水平的最佳目标。
The optimal target for glycemic control has not been established for diabetic maintenance hemodialysis (MHD) patients. A 6-year cohort (October 2001- December 2006) of 347 diabetic MHD patients with HbA1c data was examined for associations between HbA1c and mortality. Death hazard ratios (HR) were estimated using Cox regressions and cubic splines. In these 347 patients (age, 59 ± 11 years; 49 % women; 28 % African Americans; and 55 % Hispanics), each 0.5 % decline in HbA1c below 6 % was associated with a 4.7 times higher death risk (HR = 4.7; 95 % CI 1.7–12.7) in the fully adjusted model. Factors associated with lower HbA1c levels (<6 % compared to 6–7 %) were: Hispanic ethnicity (OR = 2.9; 95 % CI 1.1–7.9), higher mid-arm muscle circumstance (OR = 1.1; 95 % CI 1.0–1.3), higher total iron-binding capacity (OR = 1.03; 95 % CI 1.01–1.05), and higher iron saturation ratio (OR = 1.14; 95 % CI 1.03–1.26). HbA1c levels >7 % showed a consistent trend toward elevated mortality risk (HR = 1.18; 95 % CI 0.99–1.41) after multivariate adjustment. In diabetic MHD patients with burnt-out diabetes, characterized by HbA1c <6 %, even lower HbA1c levels are associated with significantly higher death risk. Additional studies are needed to determine the optimal target for HbA1c levels in different subgroups of diabetic MHD patients.
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