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Fatores relacionados ao ganho de peso interdialítico em pacientes em hemodiálise

2011; Sociedade Brasileira de Nefrologia; Volume: 33; Issue: 3 Linguagem: Inglês

10.1590/s0101-28002011000300005

2175-8239

Fabiana Baggio Nerbass, Jyana G. Morais, Rafaela Gonzaga dos Santos, Tatiana S. Krüger, Telma T. Koene, Hercílio Alexandre da Luz Filho,

Pharmacological Effects and Toxicity Studies

Studies have shown that interdialytic weight gain (IDWG) of hemodialysis (HD) patients is influenced by many factors, a high IDWG negatively affecting the blood pressure (BP) of this population.To evaluate the relation of clinical, demographic and nutritional factors and the IDWG of HD patients.Cross-sectional study of 278 HD (54% males; age=54.4 ± 14.4 years) from 6 dialysis centers in the State of Santa Catarina, Brazil. The means of percentage interdialytic weight gain (%IDWG) and BP during a four-week period were calculated. Body mass index (BMI) and the 7-point subjective global assessment (SGA) scale were used to assess nutritional status.The means were: %IDWG 4.06 ± 1.55%, pre-HD BP 140 ± 50 / 99 ± 25 mmHg, and post-HD BP 110 ± 27 / 78 ± 10 mmHg. %IDWG inversely correlated with age and BMI and directly correlated with pre-HD systolic BP and time on HD. Women and patients without diabetes mellitus had higher %IDWG. Only the younger subgroup of patients with SGA-defined malnutrition had higher %IDWG than well-nourished ones. When malnutrition was BMI-defined, higher %IDWG was found in the whole study population and in the female and younger age subgroups. 24% of the patients had increased %IDWG (> 5%) and, when compared with those with adequate %IDWG, had inadequate and higher levels of systolic BP (144 ± 21 versus 138 ± 20 mmHg, p < 0.05), were younger and had lower BMI.These results showed that %IDWG of HD patients was influenced by gender, time on dialysis, age and nutritional status, and that high %IDWG adversely affected the BP of this population.