Unbound MEDLINE

Does targeted pre-load optimisation by stroke volume variation attenuate a reduction in cardiac output in the prone position.

Abstract

The prone position can reduce cardiac output by up to 25% due to reduced preload. We hypothesised that preload optimisation targeted to stroke volume variation before turning prone might alleviate this. A supine threshold stroke volume variation of 14% in a preliminary study identified patients whose cardiac outputs would decline when turned prone. In 45 patients, cardiac output declined only in the group whose supine stroke volume variation was high (mean (SD) 5.1 (2.0) to 3.9 (1.9) l.min(-1) ; p < 0.001), but not in patients in whom it was low, or in those in whom stroke volume variation was high, but who received volume preload (p = 0.525 and 0.941, respectively). We conclude that targeted preload optimisation using a supine stroke volume variation value < 14% is effective in preventing falls in cardiac output induced by the prone position.

Links

  • Publisher Full Text
  • Authors

    Wu CY, Lee TS, Chan KC, Jeng CS, Cheng YJ

    Source

    Anaesthesia 67:7 2012 Jul pg 760-4

    MeSH

    Adult
    Aged
    Cardiac Output
    Female
    Hemodynamics
    Humans
    Intraoperative Care
    Lumbar Vertebrae
    Male
    Middle Aged
    Patient Positioning
    Pilot Projects
    Preoperative Period
    Prone Position
    Sensitivity and Specificity
    Stroke Volume
    Supine Position
    Young Adult

    Pub Type(s)

    Journal Article
    Randomized Controlled Trial

    Language

    eng

    PubMed ID

    22452326