CO or Q	Cardiac Output
CSA	Valve orifice Cross Sectional Aera
DO2index	Oxygen delivery index
ENTexamination	Ear, Nose and Throat examination
eNOS	Endothelial Nitric Oxide Synthase
FMD	Flow-Mediated Dilatation
HIF	Hypoxia-inductible Factor
HR	Heart rate
HVR	Hypoxia Ventilatory Response
ICU	Intensive Care Unit
iNOS	Inductible Nitric Oxide Synthase
LVOT	Left Ventricular Outflow Tract
NFκB	Nuclear transcription Factor kappa B
NO	Nitric Oxide
NRF2	Nuclear Factor (erythroid-derived 2)-like 2
PORH	Post Occlusive Reactive Hyperemia
QorCO	Cardiac Output
SpO2	Oxygen saturation
SVR	Systemic vascular resistances
VTI	Blood Velocity Time Integral