The sublingual microcirculation is impaired in sepsis and septic shock. Sidestream dark field imaging technology has been developed into a clinical tool to help the clinician assess the microcirculation at the bedside. The ideal resuscitation fluid has not been identified. The investigators aim to use this new bedside technology to establish the microcirculation properties of two popular resuscitation fluids.
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Change in Microcirculation parameters in response to a fluid bolus
Timeframe: Baseline at recruitment before fluid given, during bolus, after bolus: immediately after, 60 minutes after and 24 hours after to determine if immediate, delayed or sustained change in microcirculation parameters is influenced by fluid bolus