Abstract
Purpose
To evaluate the effects of fluid administration on microcirculatory alterations in sepsis.
Methods
With a Sidestream Dark Field device, we evaluated the effects of fluids on the sublingual microcirculation in 60 patients with severe sepsis. These patients were investigated either within 24 h (early, n = 37) or more than 48 h (late, n = 23) after a diagnosis of severe sepsis. Hemodynamic and microcirculatory measurements were obtained before and 30 min after administration of 1,000 ml Ringer’s lactate (n = 29) or 400 ml 4% albumin (n = 31) solutions.
Results
Fluid administration increased perfused small vessel density from 3.5 (2.9–4.3) to 4.4 (3.7–4.9) n/mm (p < 0.01), through a combined increase in the proportion of perfused small vessels from 69 (62–76) to 79 (71–83) %, p < 0.01) and in small vessel density from 5.3 (4.4–5.9) to 5.6 (4.8–6.3) n/mm (p < 0.01). Importantly, microvascular perfusion increased in the early but not in the late phase of sepsis: the proportion of perfused small vessels increased from 65 (60–72) to 80 (75–84) % (p < 0.01) in the early phase and from 75 (66–80) to 74 (67–81) (p = ns) in the late phase. These microvascular effects of fluids were not related to changes in cardiac index (R 2 = 0.05, p = ns) or mean arterial pressure (R 2 = 0.04, p = ns).
Conclusions
In this non-randomized trial, fluid administration improved microvascular perfusion in the early but not late phase of sepsis. This effect is independent of global hemodynamic effects and of the type of solution.
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This study was supported by institutional funds only.
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Ospina-Tascon, G., Neves, A.P., Occhipinti, G. et al. Effects of fluids on microvascular perfusion in patients with severe sepsis. Intensive Care Med 36, 949–955 (2010). https://doi.org/10.1007/s00134-010-1843-3
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DOI: https://doi.org/10.1007/s00134-010-1843-3