Effect of nutrition on arterial stiffness in peritoneal dialysis patients.
BACKGROUND
A poor nutritional state is associated with an increased risk of cardiovascular events in end-stage renal disease. It is unclear whether malnutrition itself can induce cardiovascular disease (CVD). We examined the impact of nutritional status on patients' arterial stiffness in peritoneal dialysis (PD) patients.


METHODS
We prospectively enrolled 121 stable PD patients and evaluated them at baseline and 1 year later. According to patients' Subjective Global Assessment (SGA) changes from baseline to the end, patients were divided into four groups: group 1, SGA from A to B; group 2, SGA remained A, group 3, SGA changed from B to A, and group 4, SGA remained B. Arterial stiffness was assessed by pulse-wave velocity (PWV).


RESULTS
At baseline, PWV in well-nourished patients were lower than malnourished patients (p < 0.05). One year later, in group 1, as compared with baseline, PWV increased significantly (p < 0.001) whereas handgrip strength (HGS), daily dietary protein intake and dietary energy intake decreased significantly. In group 3, PWV decreased significantly (p < 0.05) whereas HGS and ALB increased significantly. In groups 1 and 3, lgCRP level remained unchanged.


CONCLUSIONS
There was a closely longitudinal association between nutritional status and arterial stiffness in PD patients, suggesting a possible impact of nutritional status on arterial function.
Tang
Wen
W
Division of Nephrology, Peking University Third Hospital, Beijing, PR China.
Cheng
Li-Tao
LT
Lu
Xin-Hong
XH
Wang
Tao
T
D000368:Aged; D001158:Arteries / Q000473:pathology*; D002318:Cardiovascular Diseases / Q000175:diagnosis / Q000473:pathology; D004044:Dietary Proteins; D002149:Energy Intake; D005260:Female; D018737:Hand Strength; D006801:Humans; D008297:Male; D008875:Middle Aged; D009752:Nutritional Status; D010530:Peritoneal Dialysis / Q000379:methods*; D011446:Prospective Studies; D006435:Renal Dialysis; D012306:Risk
D004044:Dietary Proteins