The purpose of this study is to compare measurements of blood pressure (BP) and fluid responsiveness between the Philips AMC and invasive radial arterial line in surgical patients.
Adults aged 18 years and older
Indication for NIBP cuff
Indication for a radial arterial line
Subject or legal authorized representative is able to understand and speak the local language (also Spanish for US sites) to provide voluntary written informed consent prior to study procedures
Emergency surgery
Surgeries in which both arms are tucked
Inability to place the Philips AMC appropriately due to subject anatomy or condition
Known pregnancy or lactating women (self-report)