The APACHE II (Acute Physiology and Chronic Health Evalution ) score is a general measure of disease severity based on current physiologic measurements during first 24 hours and previous health condition. The score can help in the assessment of patients to determine the level and degree of diagnostic and therapeutic intervention. From the APACHE II score and knowledge of primary clinical diagnoses an estimated risk of death in the hospital can be calculated. APACHE2 software allows users to quickly calculate APACHE II scores in order to classify the disease severity in critically ill patients. The demo version of APACHE2 is functional during 5 uses. After that you must register the software for get the full time version. You need to install the eVB runtime 2003 in pocket PC with Windows Mobile 2003. You can download the Runtimes free from here: http://msdn.microsoft.com/mobility/windowsmobile/downloads/evb.aspx