REstricted Fluid REsuscitation in Sepsis-related Hypotension (REFRESH)

Comparing a ‘restricted volume’ and ‘standard volume’ approaches to fluid resuscitation in patients with sepsis

Grant ID: EMSS-229R24-2015

Lay Summary

The REFRESH study is a multicentre, open-label, randomised, phase II clinical feasibility trial. This is the first randomised trial examining fluid volume for initial resuscitation in septic shock in an industrialised country. A pragmatic, open-label design will establish the feasibility of undertaking a large, international, multicentre trial with sufficient power to assess clinical outcomes. The embedded biomarker study aims to provide mechanistic plausibility for a larger trial by defining the effects of fluid volume on markers of systemic inflammation and the vascular endothelium.

Participants will be patients presenting to the emergency departments of Australian metropolitan hospitals with suspected sepsis and a systolic blood pressure of < 100 mmHg, persisting after a 1000-ml fluid bolus with isotonic crystalloid. Participants will be randomised to either a second 1000-ml fluid bolus (standard care) or maintenance rate fluid only, with the early commencement of a vasopressor infusion to maintain a mean arterial pressure of > 65 mmHg, if required (restricted fluid). All will receive further protocolised fluid boluses (500 ml or 250 ml, respectively), if required during the 6-h study period. The primary outcome measure is total volume administered in the first 6 h. Secondary outcomes include fluid volume at 24 h, organ support 'free days' to day 28, 90-day mortality, and a range of feasibility and process-of-care measures. Participants will also undergo serial measurement, over the first 24 h, of biomarkers of inflammation, endothelial cell activation and glycocalyx degradation for comparison between the groups.


- Macdonald S.P.J. & Shapiro N., "Liberal or restricted fluid resuscitation in critical illness: Shifting the needle back towards equipoise", EMJ, 2018; 30(4): 446-447. doi.10.1111/1742-6723.13130

- Macdonald S.P.J., Taylor D., Keijzers G., Arendts G., Fatovich D. M., Kinnear F.B., Brown S.G.A., Bellomo R.,Burrows S., Fraser J.F., Litton E., Ascencio-Lane J.C, Anstey M., McCutcheon D.,Smart L., Vlad I., Winearls J., Wibrow B., "REstricted Fluid REsuscitation in Sepsis-associated Hypotension (REFRESH): study protocol for a pilot randomised controlled trial", 'Trials', August 2017;18:399 doi. 10.1186/s13063-017-2137-7



Amount Awarded


Grant Scheme


Principal Investigator:
A/Prof Gerben Keijzers

Co Investigators:
Dr Stephen Macdonald
Dr Frances Kinnear
A/Prof Glenn Arendts
Prof Simon Brown
Dr Ioana Vlad
Prof David Taylor
Dr David McCutcheon
Dr Stephen Asha
Prof Daniel Fatovich

Associate Investigators:
Dr James Winearls
Dr Manoj Saxena
Prof Rinaldo Bellemo
Dr Juan Ascencio-Lane
Dr David Cooper
Dr Bradley Wibrow
Dr Matthew Anstey
Dr Lisa Smart
Dr Edward Litton
Dr Anton Leonard


Collaborating Institutions


  • ANZCTR Clinical trial registry page

  • Media

  • Channel 9 News_December 2017
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