腹膜厚度与腹膜溶质转运功能的相关性

目的 探讨腹膜透析患者腹膜厚度与基线溶质转运功能的关系,分析腹膜转运功能的影响因素.方法 入选2017年1月至2019年6月福建省龙岩市第二医院肾内科收治的非糖尿病终末期肾脏病(ESRD)患者为研究对象.腹膜透析置管术前用彩色超声仪测量患者壁层腹膜厚度.腹膜透析治疗后1个月行标准腹膜平衡试验(PET)检查,以4h腹透液的矫正肌酐与2h血清肌酐的比值(D/Pcr)作为基线溶质转运指标,并按照D/Pcr评估结果分为高/高平均转运(H)组(D/Pcr≥0.65)和低/低平均转运(L)组(D/Pcr< 0.65).比较两组患者临床资料、壁层腹膜厚度和腹膜透析相关指标的差异;二元Logistic回归法分析腹膜转运功能的影响因素.结果 共纳入70例非糖尿病ESRD患者,H组患者腹膜超滤量显著低于L组;腹膜内生肌酐清除率(Ccr)和腹膜厚度显著高于L组(均P<0.05).Pearson及Spearman相关性分析结果显示,腹膜透析患者壁层腹膜厚度与溶质转运指标D/Pcr(r=0.673)、腹膜内生肌酐清除率(Ccr,r=0.261)呈正相关,与腹膜透析超滤量呈负相关(r=-0.365,均P<0.05).偏相关分析结果显示,腹膜厚度与溶质转运指标D/Pcr (r=0.539)、腹膜Ccr(r=0.338)呈正相关(均P<0.05).二元Logistic回归分析结果显示,腹膜增厚是腹膜转运功能的危险因素(OR=1.175,95%CI1.009~ 1.369,P=0.038).结论 非糖尿病腹膜透析患者壁层腹膜厚度与基线溶质转运指标呈正相关,腹膜增厚是影响腹膜转运功能的危险因素.

Correlation between peritoneal thickness and baseline peritoneal solute transport function

Objective To investigate the relationship between peritoneal thickness and baseline solute transport function in peritoneal dialysis (PD) patients, and analyze the factors affecting the function of peritoneal transport. Methods Non-diabetic end-stage renal disease (ESRD) patients admitted to the Second Hospital of Longyan City from January 2017 to June 2019 were enrolled in this study. The thickness of the peritoneal membrane was measured by color ultrasound instrument before the peritoneal catheterization. Standard peritoneal equilibration test (PET) was performed after one month of peritoneal dialysis. The ratio of corrected creatine in 4 h dialysate to 2 h serum creatine (D/Pcr) was used as a solute baseline transport index, and according to the D/Pcr evaluation results, the patients were divided into high/high average transfer (H) group (D/Pcr≥0.65) and low/low average transfer (L) group (D/Pcr＜0.65). The clinical data, peritoneal thickness and peritoneal dialysis related indicators between the two groups of patients were compared. Binary logistic regression was used to analyze the factors affecting the function of peritoneal transport. Results The amount of peritoneal ultrafiltration in H group was significantly lower than that in L group, intraperitoneal creatinine clearance (Ccr) and peritoneal thickness were significantly higher than those in L group (both P＜0.05). Pearson and Spearman correlation results showed that the thickness of peritoneal membrane positively correlated with D/Pcr (r=0.673, P＜0.05), peritoneal Ccr (r=0.261, P＜0.05), and negatively correlated with ultrafiltration of peritoneal dialysis (r=-0.365, P＜0.05). Partial correlation analysis showed that the peritoneal thickness was positively correlated with the solute transport index D/Pcr (r=0.539, P＜0.05) and the peritoneal Ccr (r=0.338, P＜0.05). Binary logistic regression results showed that peritoneal thickening was a risk factor affecting peritoneal transport function (OR=1.175, 95%CI 1.009-1.369, P＜0.05). Conclusions There is a positive correlation between the peritoneal membrane thickness and the baseline solute transport index in patients with non-diabetic peritoneal dialysis. Peritoneal thickening is a risk factor affecting peritoneal transport function.