ABSTRACT
What are the indications for direct arterial blood pressure measurement?
When non-invasive BP measurements are inaccurate – in obese patients, arrhythmias and during ambulance transfers.
When extreme changes in blood pressure are expected – massive haemorrhage, cardiovascular instability and induced hypotension.
When frequent arterial blood samples are required.
When using pulse-contour cardiac output monitoring (e.g. LiDCO).
