Continuous non-invasive monitoring of blood pressure in the operating room: a cuffless optical technology at the fingertip

Abstract

Routine monitoring of blood pressure during general anaesthesia relies on intermittent measurements with a non-invasive brachial cuff every five minutes. This manuscript provides first experimental evidence that a physiology-based pulse wave analysis algorithm applied to optical data (as provided by a standard fingertip pulse oximeter) is capable of accurately estimating blood pressure changes in-between cuff readings. Combined with the routine use of oscillometric cuffs, the presented novel approach is a candidate technology to increase patient safety by providing beat-to-beat hemodynamic measurements without the need of invasive monitoring procedures.

Keywords

• beat-to-beat
• blood pressure
• cuffless
• general anesthesia
• operating room
• pulse wave analysis