Cardiovascular stability during the haemodialysis session: relationship between modelling and impedance parameters.
Nephrol Dial Transplant 1990;
5 Suppl 1:137-40. [PMID:
2129445 DOI:
10.1093/ndt/5.suppl_1.137]
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Abstract
The percentage of body water, if calculated from impedance, was found to be significantly different from the classic 58%. This supports the view that the evaluation of the dialytic efficiency should be, in the near future, carried out on the basis of a 'two-pool' model instead of the old 'one-pool'. The serial collection of data during a dialytic session supported the hypothesis that, 90 min after the start or, in general, after a body-water loss of about 5%-6%, some fundamental changes in measured indexes (phase angle, systolic pressure, body volumes, correlation matrix) usually appear. Large-scale research, based on an RS 232 interface connected to a computerised program, will probably help in clarifying whether some major intra-dialytic phenomena could in the near future be easily and automatically predicted.
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