Cardiovascular stability during the haemodialysis session: relationship between modelling and impedance parameters.
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.
Biasioli
S
S
Nephrology and Dialysis Unit, Legnago Hospital, Italy.
Petrosino
L
L
Cavallini
L
L
Cesaro
A
A
Fazion
S
S
Zambello
A
A
Foroni
R
R
Mazzali
A
A
D001834:Body Water / Q000378:metabolism; D002307:Cardiography, Impedance; D002319:Cardiovascular System / Q000503:physiopathology*; D004553:Electric Conductivity; D005260:Female; D006801:Humans; D007022:Hypotension / Q000209:etiology; D008875:Middle Aged; D008955:Models, Cardiovascular; D006435:Renal Dialysis / Q000009:adverse effects*; D014508:Urea / Q000378:metabolism
D014508:Urea