Resumo

SANCHEZ MARTIN, Alberto et al. Application of vibrations to the dialyser surface: Effect on the heparin dose. Rev Soc Esp Enferm Nefrol [online]. 2010, vol.13, n.3, pp.161-166. ISSN 1139-1375.

When the dialyser is suitably primed, the capillaries expand correctly and the membrane is well impregnated with the solution. In order to facilitate the priming of the dialyser, a device was placed next to the dialyser which constantly produces a vibration inside it to favour the correct elimination of microbubbles and uniform distribution of the heparin. This study included 8 patients with higher than normal heparin requirements and whose dialysers at the end of the session showed coagulated capillaries. Over thirteen sessions, the device was applied reducing the heparin dose on the third session if the dialyser was still clean at the end of that session. A photographic record was kept of the state of the dialyser at the end of the session. The mean initial dose of heparin was 3500 ± 534.522 i.u. and at the end of the study it was 2562.50±728.869 i.u., the haemolysis, Kt/V and haemoglobin indices and other analytical parameters did not show any differences. The photographic record showed clean dialysers once the study was complete. With this method we have managed to keep the circuit clean with lower doses of heparin and with no alteration of the analytical parameters.

Palavras-chave : Dialyser Priming; Heparin dose; Haemolysis; Coagulation; Haemodialysis.

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