Prior, FrankClegg, GarethMcRaild, Alan2021-09-032021-09-032019-01-14Prior, F. et al, 2019. Rapid assessment of membrane osmotic pressure as a guide to resuscitation in the acutely shocked patient. Emergency Medicine Journal, 36 (1), e8-e9.1472-02131472-020510.1136/emermed-2019-999.21http://hdl.handle.net/20.500.12417/1174Resuscitation of the shocked patient presents a dilemma for the prehospital resuscitation team. Selection of the appropriate type and quantity of resuscitation fluid is not supported by evidence based consensus and discussions such as the ‘crystalloid colloid debate’ have been prolonged and unhelpful. We are seeking a straightforward way of guiding resuscitation of shocked patients. https://emj.bmj.com/content/36/1/e8.3 This is an Open Access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. http://creativecommons.org/licenses/by-nc/4.0/ DOI http://dx.doi.org/10.1136/emermed-2019-999.21enEmergency Medical ServicesResuscitationAssessment ToolsShockOsmotic Pressure