Mean BP

The mean Blood PressureBP as collected for the APACHE score is calculated as follows:

Mean BP = ((2x Diastolic) + Systolic) ÷ 3

• The data collector is responsible to collect the WORST BP (be it high or low)during the first 24 hours in ICU.
• The APACHE II score is based on the worst calculated mean BP.
• The mean BP is automatically calculated when the CSV data from the PDA is "uploaded" to the master data repository.
• when selecting this the worst BP, you must also take into account the diagnosis. For example, if a patient is in septic shock, you want to select the lowest BP as opposed to the highest BP which is artificially enhanced by inotropes.