aHR	adjusted hazard ratio
ARDS	acute respiratory distress syndrome
BMI	body mass index
BW	actual body weight
CI	confidence interval
COVID-19	coronavirus disease 2019
d	day
del	delivery
ECMO	extracorporeal membrane oxygenation
EN	enteral nutrition
ESPEN	European Society for Clinical Nutrition and Metabolism
g	gram
GRV	gastric residual volume
HR	hazard ratio
ICU	intensive care unit
IQR	interquartile range
kcal	kilocalories
kg	kilogram
LOS	length of stay
mg	milligram
Non-Surv	non-survivors
PN	parenteral nutrition
prop	propofol
requ	requirements
SAPSII	Simplified Acute Physiology Score II
SOFA	Sequential Organ Failure Assessment Score
Std	standard deviation
Surv	survivors
vv	venovenous