The analysis of trial results of the intravenous fluids pharmacodynamics revealed problems common to all studies, such as varying study designs, clinical discretion for treatments, and heterogeneous patients. We believe that in the methodology of future research it is also necessary to pay due attention to the actual rather than theoretical physicochemical parameters of the solutions used, such as osmolality, pH, and potential excess of bases. Paying attention to these parameters of intravenous fluids will be useful for assessing their role in producing pharmacodynamic effects in critically ill patients.
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