• Ann Fr Anesth Reanim · Jan 1990

    Review

    [Technical constraints in rapid vascular fluid replacement].

    • M T Noirot, M Freysz, B Letourneau, N Defrance, and M Angue.
    • Département d'Anesthésie-Réanimation, Hôpital Général, Dijor.
    • Ann Fr Anesth Reanim. 1990 Jan 1;9(5):433-42.

    AbstractRapid fluid infusion remains the cornerstone for therapy of hypovolaemic shock. The principal limitations of flow rate are governed by the four variables of Poiseuille's law: tube internal diameter and length, viscosity of the fluid passing through the tube, and the pressure gradient between the two ends of the tube. Conventional transfusion systems, with wide bore tubing (up to 5.0 mm internal diameter), large bore cannulas (8.5 French introducer catheters), high pressure (up to 300 mmHg) and diluted blood, can result in a maximum flow rate of about 1,000 ml.min-1 (for crystalloid solutions). Specific apparatus for rapid infusion can increase this to 1,500 ml.min-1 (Rapid Infusion System, Haemonetics). Dry-heat warming devices and microfiltration, to remove microaggregates and prevent non haemolytic febrile transfusion reactions, seem necessary when carrying out rapid transfusions. However, the use of microaggregate filters could be avoided by the routine production of leukocyte-poor red blood cell concentrates.

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