• Bart Hiemstra, Ruben J Eck, Geert Koster, Jørn Wetterslev, Anders Perner, Ville Pettilä, Harold Snieder, Yoran M Hummel, Renske Wiersema, de Smet Anne Marie G A AMGA Department of Critical Care, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands., Frederik Keus, van der Horst Iwan C C ICC Department of Critical Care, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands., and SICS Study Group.
• Department of Critical Care, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
• BMJ Open. 2017 Sep 27; 7 (9): e017170.

PurposeIn the Simple Intensive Care Studies-I (SICS-I), we aim to unravel the value of clinical and haemodynamic variables obtained by physical examination and critical care ultrasound (CCUS) that currently guide daily practice in critically ill patients. We intend to (1) measure all available clinical and haemodynamic variables, (2) train novices in obtaining values for advanced variables based on CCUS in the intensive care unit (ICU) and (3) create an infrastructure for a registry with the flexibility of temporarily incorporating specific (haemodynamic) research questions and variables. The overall purpose is to investigate the diagnostic and prognostic value of clinical and haemodynamic variables.ParticipantsThe SICS-I includes all patients acutely admitted to the ICU of a tertiary teaching hospital in the Netherlands with an ICU stay expected to last beyond 24 hours. Inclusion started on 27 March 2015.Findings To DateOn 31 December 2016, 791 eligible patients fulfilled our inclusion criteria of whom 704 were included. So far 11 substudies with additional variables have been designed, of which six were feasible to implement in the basic study, and two are planned and awaiting initiation. All researchers received focused training for obtaining specific CCUS images. An independent Core laboratory judged that 632 patients had CCUS images of sufficient quality.Future PlansWe intend to optimise the set of variables for assessment of the haemodynamic status of the critically ill patient used for guiding diagnostics, prognosis and interventions. Repeated evaluations of these sets of variables are needed for continuous improvement of the diagnostic and prognostic models. Future plans include: (1) more advanced imaging; (2) repeated clinical and haemodynamic measurements; (3) expansion of the registry to other departments or centres; and (4) exploring possibilities of integration of a randomised clinical trial superimposed on the registry.Study Registration NumberNCT02912624; Pre-results.© Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise expressly granted.

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