Abstract

Dry-weight is an important assessment index for adequacy of hemodialysis, and is vital for improving the survival rate as well as quality of life of patients. With the advances in medical practice, the dry weight definition has developed gradually and the concept evolved. Too high dry weight can affect blood pressure, cardiovascular system stability, and inflammatory factors, while too low dry weight may increase the risk of vascular access obstruction and loss of residual renal function, and increase hypotension-related complications during hemodialysis. Currently clinical methods for evaluation on dry weight includes clinical evaluation, determination for diameter of the inferior vena cava, isotope determination, determination of plasma markers, non-invasive blood volume monitor, and bio-electrical impedance spectra analysis, and so on, but each method has its limitations. Clinically dry weight dissatisfaction is mainly because of patients′ failing to follow the doctor′s advice, short time of hemodialysis, and excess sodium intake, etc. Clinical analysis of patients′ specific conditions should be performed to take targeted measures for achieving the goal of dry weight. Key words: Hemodialysis; Dry weight; Management

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