Physiological changes during anaesthesia for surgery with potential for moderate blood loss

Abstract

Data in this collection was originally collected, with local ethics committee and patient consent, at 0.1 Hz from the Datex-Ohmeda S5 anaesthetic monitor via a serial connection using an ‘in-house’ data-collection program (A.Lowe). The data collected were converted to text files and stored in a Microsoft Excel™ file. The concurrent timed comments from clinicians included an assessment of the state of blood volume, whether there was sympathetic activity or a fall in cardiac output, amongst others, were collected in a separate file. This data was collected for the purpose of investigating methods of enhancing intra-operative diagnoses by an expert system [41]. A VBA (v6.5, Microsoft) script was used to merge and convert these files into the XML schema. Note that blood pressure values are 100 x the true value.