The main purpose of this study is to assess the accuracy of a non-invasive wearable technology in the form of a wristband. This wristband (Loop Band) uses optical sensors and spectrometry to measure and estimate vitals as well as a full blood gas panel; comparable to the standard method of an invasive arterial line and pressure transducer. The investigators aim to show equivalence of clinical physiologic outcome measurements with the Loop Band relative to current methods (i.e. arterial lines, etc.). In addition, this study aims to validate this wearable technology as a potential alternative to invasive measurements, to reduce complications, and improve accuracy in regards to patient monitoring.