Early recognition of patients whose condition is deteriorating is essential to prevent cardiac arrest. To detect signs of deterioration, a patient’s vital signs, such as temperature, pulse, respiratory rate and blood pressure, are monitored. Poor design of vital sign charts is given as one of the reasons for deficiency in recognising patient deterioration. Little is known about the impact of documenting vital signs in electronic patient record (EPR) systems. The aim of this study is to examine to which extent the EPR supports the documentation of deterioration in patients at risk of in-hospital cardiac arrest. The poster reports on the pilot study which was performed to test the adequacy and appropriateness of the data collection tool and to examine the appropriateness of the data collected for statistical analyses.